{"id":8102,"date":"2022-04-14T09:25:51","date_gmt":"2022-04-14T07:25:51","guid":{"rendered":"https:\/\/kks-surfacetreatment.com\/passivation\/"},"modified":"2022-09-12T09:18:35","modified_gmt":"2022-09-12T07:18:35","slug":"passivation","status":"publish","type":"page","link":"https:\/\/kks-surfacetreatment.com\/en\/expertise\/passivation\/","title":{"rendered":"Passivation"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-stretch fusion-flex-content-wrap\" style=\"max-width:1310.4px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:3.84%;--awb-width-medium:66.666666666667%;--awb-order-medium:0;--awb-spacing-right-medium:2.88%;--awb-spacing-left-medium:2.88%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-one\" style=\"--awb-margin-right-small:0px;--awb-margin-bottom-small:0px;--awb-margin-left-small:0px;\"><h1 class=\"fusion-title-heading title-heading-left\">Passivation of surfaces for medical technology<\/h1><\/div><div class=\"fusion-text fusion-text-1\" style=\"--awb-text-transform:none;\"><p>Stainless steel alloys used in medical technology must be resistant to corrosion caused by all ambient media as well as body fluids and tissues. In order to restore the natural passive layer of stainless steel, which is contaminated and damaged during the mechanical manufacturing of implants and medical instruments, we process such parts by passivation processes in our Medical Surface Center.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_2 1_2 fusion-flex-column half-margin-bottom\" style=\"--awb-bg-position:center center;--awb-bg-size:cover;--awb-width-large:50%;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:3.84%;--awb-width-medium:33.333333333333%;--awb-order-medium:0;--awb-spacing-right-medium:5.76%;--awb-spacing-left-medium:5.76%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper lazyload fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column fusion-empty-column-bg-image fusion-column-has-bg-image\" data-bg-url=\"https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks_competence-passivation_960x600px.jpg\" data-bg=\"https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks_competence-passivation_960x600px.jpg\"><img decoding=\"async\" class=\"fusion-empty-dims-img-placeholder fusion-no-large-visibility fusion-no-medium-visibility\" alt=\"Image of products from the medical technology industry being passivated in a KKS passivation system\" aria-label=\"Passivation &#8211; Surface treatment medical technology\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27960%27%20height%3D%27600%27%20viewBox%3D%270%200%20960%20600%27%3E%3Crect%20width%3D%27960%27%20height%3D%27600%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\"><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling grey-20 back box withcurve-right double-margin-bottom standard-margin-top\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1310.4px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-margin-right-small:0px;--awb-margin-bottom-small:0px;--awb-margin-left-small:0px;\"><h2 class=\"fusion-title-heading title-heading-left\">Passivation \u2013 areas of application<\/h2><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><ul style=\"--awb-size:20.4px;--awb-line-height:34.68px;--awb-icon-width:34.68px;--awb-icon-height:34.68px;--awb-icon-margin:14.28px;--awb-content-margin:48.96px;\" class=\"fusion-checklist fusion-checklist-1 fusion-checklist-default type-icons\"><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon awb-icon-check\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">Enhanced corrosion resistance by strengthening the passive layer<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon awb-icon-check\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">Removal of metal impurities (&#8220;metallically pure&#8221;)<\/div><\/li><\/ul><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><ul style=\"--awb-size:20.4px;--awb-line-height:34.68px;--awb-icon-width:34.68px;--awb-icon-height:34.68px;--awb-icon-margin:14.28px;--awb-content-margin:48.96px;\" class=\"fusion-checklist fusion-checklist-2 fusion-checklist-default type-icons\"><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon awb-icon-check\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">Increase the life span of components<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon awb-icon-check\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">Biocompatible surfaces due to passivating oxide layer<\/div><\/li><\/ul><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-3 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling fusion-no-medium-visibility grey back area white-text\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-stretch fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"max-width:1310.4px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-5 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-3 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-two\" style=\"--awb-margin-right-small:0px;--awb-margin-bottom-small:0px;--awb-margin-left-small:0px;\"><h2 class=\"fusion-title-heading title-heading-center\">Passivation for the surface treatment of surfaces in the medical technology sector<\/h2><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-6 fusion_builder_column_1_3 1_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:33.333333333333%;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:5.76%;--awb-width-medium:33.333333333333%;--awb-order-medium:0;--awb-spacing-right-medium:5.76%;--awb-spacing-left-medium:5.76%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-space-between fusion-content-layout-column\"><div class=\"fusion-text fusion-text-2\" style=\"--awb-text-transform:none;\"><p style=\"text-align: center;\">Are you looking for a passivation system that meets your individual requirements?<\/p>\n<\/div><div style=\"text-align:center;\"><a class=\"fusion-button button-flat button-large button-lightgray fusion-button-lightgray button-1 fusion-button-span-yes fusion-button-default-type\" style=\"--button_text_transform:none;\" target=\"_self\" href=\"https:\/\/kks-surfacetreatment.com\/en\/systems\/passivation-systems\/\"><i class=\"fa-angle-right fas awb-button__icon awb-button__icon--default button-icon-left\" aria-hidden=\"true\"><\/i><span class=\"fusion-button-text awb-button__text awb-button__text--default\">Passivation systems<\/span><\/a><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-7 fusion_builder_column_1_3 1_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:33.333333333333%;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:5.76%;--awb-width-medium:33.333333333333%;--awb-order-medium:0;--awb-spacing-right-medium:5.76%;--awb-spacing-left-medium:5.76%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-space-between fusion-content-layout-column\"><div class=\"fusion-text fusion-text-3\" style=\"--awb-text-transform:none;\"><p style=\"text-align: center;\">In our Medical Surface Center we offer you the respective outsourcing services with the highest quality standards.<\/p>\n<\/div><div style=\"text-align:center;\"><a class=\"fusion-button button-flat button-large button-lightgray fusion-button-lightgray button-2 fusion-button-span-yes fusion-button-default-type\" style=\"--button_text_transform:none;\" target=\"_self\" href=\"https:\/\/kks-surfacetreatment.com\/en\/medical-surface-center\/outsourcing\/\"><i class=\"fa-angle-right fas awb-button__icon awb-button__icon--default button-icon-left\" aria-hidden=\"true\"><\/i><span class=\"fusion-button-text awb-button__text awb-button__text--default\">Outsourcing services<\/span><\/a><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-4 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling fusion-no-small-visibility fusion-no-large-visibility grey back area white-text\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"max-width:1310.4px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-8 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-4 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-two\" style=\"--awb-margin-right-small:0px;--awb-margin-bottom-small:0px;--awb-margin-left-small:0px;\"><h2 class=\"fusion-title-heading title-heading-center\">Passivation for the surface treatment of surfaces in the medical technology sector<\/h2><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-9 fusion_builder_column_3_5 3_5 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:60%;--awb-spacing-right-large:3.2%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:3.2%;--awb-width-medium:60%;--awb-order-medium:0;--awb-spacing-right-medium:3.2%;--awb-spacing-left-medium:3.2%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-4\" style=\"--awb-text-transform:none;\"><p style=\"text-align: center;\">Are you looking for a passivation system that meets your individual requirements?<\/p>\n<\/div><div style=\"text-align:center;\"><a class=\"fusion-button button-flat button-large button-lightgray fusion-button-lightgray button-3 fusion-button-span-yes fusion-button-default-type\" style=\"--button_text_transform:none;\" target=\"_self\" href=\"https:\/\/kks-surfacetreatment.com\/en\/systems\/passivation-systems\/\"><i class=\"fa-angle-right fas awb-button__icon awb-button__icon--default button-icon-left\" aria-hidden=\"true\"><\/i><span class=\"fusion-button-text awb-button__text awb-button__text--default\">Passivation systems<\/span><\/a><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-10 fusion_builder_column_3_5 3_5 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:60%;--awb-spacing-right-large:3.2%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:3.2%;--awb-width-medium:60%;--awb-order-medium:0;--awb-spacing-right-medium:3.2%;--awb-spacing-left-medium:3.2%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-5\" style=\"--awb-text-transform:none;\"><p style=\"text-align: center;\">In our Medical Surface Center we offer you the respective outsourcing services with the highest quality standards.<\/p>\n<\/div><div style=\"text-align:center;\"><a class=\"fusion-button button-flat button-large button-lightgray fusion-button-lightgray button-4 fusion-button-span-yes fusion-button-default-type\" style=\"--button_text_transform:none;\" target=\"_self\" href=\"https:\/\/kks-surfacetreatment.com\/en\/medical-surface-center\/outsourcing\/\"><i class=\"fa-angle-right fas awb-button__icon awb-button__icon--default button-icon-left\" aria-hidden=\"true\"><\/i><span class=\"fusion-button-text awb-button__text awb-button__text--default\">Outsourcing services<\/span><\/a><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-5 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1310.4px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-11 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-5 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-margin-right-small:0px;--awb-margin-bottom-small:0px;--awb-margin-left-small:0px;\"><h2 class=\"fusion-title-heading title-heading-left\">Passivation &#8211; How it works:<\/h2><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-12 fusion_builder_column_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:2.88%;--awb-width-medium:66.666666666667%;--awb-order-medium:0;--awb-spacing-right-medium:2.88%;--awb-spacing-left-medium:2.88%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-6\" style=\"--awb-text-transform:none;\"><p>The chromium contained in the stainless steel reacts spontaneously with the atmospheric oxygen on the surface of the part to form a chromium oxide layer that is 3 to 5 nanometers thick and protects the base material against corrosion (passive layer). This passive layer is contaminated and\/or damaged during the manufacturing process. The exposed iron then oxidizes, producing surface defects that can encourage corrosion and may result in breakage of the implant and medical instrument. Surface treatment, commonly referred to as passivation, is essential.<\/p>\n<p>Nitric acid also removes the exposed iron and other metal impurities from the surface and encourages chromium oxide to form. If the natural passive layer is extremely contaminated and damaged, pickling prior to passivation is useful for forming a metallically clean surface. Nitric acid should be used for passivation in this case.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-13 fusion_builder_column_1_3 1_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:33.333333333333%;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:5.76%;--awb-width-medium:33.333333333333%;--awb-order-medium:0;--awb-spacing-right-medium:5.76%;--awb-spacing-left-medium:5.76%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element awb-imageframe-style awb-imageframe-style-below awb-imageframe-style-1\" style=\"--awb-caption-title-font-family:var(--body_typography-font-family);--awb-caption-title-font-weight:var(--body_typography-font-weight);--awb-caption-title-font-style:var(--body_typography-font-style);--awb-caption-title-size:var(--body_typography-font-size);--awb-caption-title-transform:var(--body_typography-text-transform);--awb-caption-title-line-height:var(--body_typography-line-height);--awb-caption-title-letter-spacing:var(--body_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-zoomin\"><a href=\"https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks-ultraschall-grafik-EN-passivieren-960px.png\" class=\"fusion-lightbox\" data-rel=\"iLightbox[e1e8c045efe6646bd0e]\" data-title=\"Chemical treatment to prevent corrosion: formation of the chromium oxide layer during passivation\" title=\"Chemical treatment to prevent corrosion: formation of the chromium oxide layer during passivation\"><img decoding=\"async\" width=\"960\" height=\"351\" alt=\"Depiction of the chemical treatment of stainless steel by means of passivation \u2013 important for preventing corrosion in medical technology applications\" src=\"https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks-ultraschall-grafik-EN-passivieren-960px.png\" data-orig-src=\"https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks-ultraschall-grafik-EN-passivieren-960px.png\" class=\"lazyload img-responsive wp-image-14871\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27960%27%20height%3D%27351%27%20viewBox%3D%270%200%20960%20351%27%3E%3Crect%20width%3D%27960%27%20height%3D%27351%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks-ultraschall-grafik-EN-passivieren-960px-200x73.png 200w, https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks-ultraschall-grafik-EN-passivieren-960px-400x146.png 400w, https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks-ultraschall-grafik-EN-passivieren-960px-600x219.png 600w, https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks-ultraschall-grafik-EN-passivieren-960px-800x293.png 800w, https:\/\/kks-surfacetreatment.com\/wp-content\/uploads\/kks-ultraschall-grafik-EN-passivieren-960px.png 960w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 992px) 100vw, 400px\" \/><\/a><\/span><div class=\"awb-imageframe-caption-container\" style=\"text-align:center;\"><div class=\"awb-imageframe-caption\"><div class=\"awb-imageframe-caption-title\">Chemical treatment to prevent corrosion: formation of the chromium oxide layer during passivation<\/div><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-14 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-7\" style=\"--awb-text-transform:none;\"><p>If the passive layer is not damaged and there are only foreign metal traces on the surface of the part, these can also be removed with other acids. Citric acid \u200bis known to be very effective. It notably removes iron from the surface of the part by forming an iron citrate complex, thereby preventing oxide formation, which is particularly useful in medical technology. However, citric acid is not able to develop a chromium oxide layer. Titanium must not be chemically passivated because it already forms a stable oxide layer spontaneously. In the case of superficial foreign metal impurities, treatment with nitric acid or citric acid can prove useful.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-15 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-6 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-margin-right-small:0px;--awb-margin-bottom-small:0px;--awb-margin-left-small:0px;\"><h2 class=\"fusion-title-heading title-heading-left\">Passivation technology for medical technology<\/h2><\/div><div class=\"fusion-text fusion-text-8\" style=\"--awb-text-transform:none;\"><p>We use an immersion method to passivate stainless steel parts, whereby the parts are immersed in the passivation acid in baskets made from a chemically resistant material. Acid concentration, temperature and passivation period are all in accordance with the nitric process for nitric acid or the citric process for citric acid, as described in the ASTM A967 standard. After passivation, the parts are rinsed thoroughly with high-quality water (osmosis water, demineralized water) and dried immediately. As a rule, the surface treatment processes used, including pre- and post-treatment during passivation, are based on ASTM A380 and ASTM F86.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":1897,"parent":9101,"menu_order":16,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-8102","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Passivation of surfaces for medical technology | KKS<\/title>\n<meta name=\"description\" content=\"The passivation of implants and medical technology instruments produces a corrosion-resistant passive layer. 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