{"id":2498,"date":"2019-06-04T15:47:57","date_gmt":"2019-06-04T13:47:57","guid":{"rendered":"https:\/\/tusa-precision.ch\/cobalt-leaching\/"},"modified":"2019-06-12T15:17:04","modified_gmt":"2019-06-12T13:17:04","slug":"cobalt-leaching","status":"publish","type":"page","link":"https:\/\/tusa-precision.ch\/en\/cobalt-leaching\/","title":{"rendered":"Cobalt Leaching"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2498\" class=\"elementor elementor-2498 elementor-1322 elementor-bc-flex-widget\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-72a2f5c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"72a2f5c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9f41923\" data-id=\"9f41923\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b435fd9 elementor-widget elementor-widget-spacer\" data-id=\"b435fd9\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-940f48f elementor-widget elementor-widget-text-editor\" data-id=\"940f48f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Cobalt Leaching is a serious problem, now internationally recognized, sometimes found in the use of tools. This problem causes a cobalt separation in the surface state of the material. As cobalt is the aggregate used for the production of tungsten carbide, its dissipation causes a reduction in bonding and adherence between carbides (wolframic carbide and mixed carbides) and coating (PVD) with serious problems of premature wear. This process must therefore be avoided in order not to compromise the tool.<br \/>The reasons behind this process are manifold. The main ones can be traced to chemical and thermal factors. For this reason, the choice of suitable cooling lubricants used during the mechanical processing phases is essential to avoid &#8220;Cobalt Leaching&#8221;. The machining parameters (such as the flow rate of the cooling lubricant, the grinding pressure, the speed of the grinding wheel, etc.) must also be defined on the basis of the materials to be processed and the subsequent surface coatings used. To make sure that PVD coating is as effective as possible, it is necessary to analyse the entire production process in detail.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5b04a54 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5b04a54\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-e25b07f\" data-id=\"e25b07f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3577cea elementor-widget elementor-widget-image\" data-id=\"3577cea\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img width=\"646\" height=\"401\" src=\"https:\/\/tusa-precision.ch\/web\/wp-content\/uploads\/2019\/03\/cobalt.jpg\" class=\"attachment-large size-large wp-image-2197\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/tusa-precision.ch\/web\/wp-content\/uploads\/2019\/03\/cobalt.jpg 646w, https:\/\/tusa-precision.ch\/web\/wp-content\/uploads\/2019\/03\/cobalt-300x186.jpg 300w\" sizes=\"(max-width: 646px) 100vw, 646px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-19936a4\" data-id=\"19936a4\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ed61c05 elementor-widget elementor-widget-text-editor\" data-id=\"ed61c05\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Cross-section of the TiN-coated tungsten carbide polishing which highlights the &#8220;Cobalt Leaching&#8221; phenomenon (left). The EXD-Linescan (on the right) shows how the depletion of cobalt on the surface layer of tungsten carbide undermines the aggregating bond between the carbide body and the surface coating of the tool. Under these conditions a good adhesion of the coating can not be achieved.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f910c05 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f910c05\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0d45098\" data-id=\"0d45098\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-57ab4f4 elementor-widget elementor-widget-spacer\" data-id=\"57ab4f4\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Cobalt Leaching is a serious problem, now internationally recognized, sometimes found in the use of tools. This problem causes a cobalt separation in the surface state of the material. As cobalt is the aggregate used for the production of tungsten carbide, its dissipation causes a reduction in bonding and adherence between carbides (wolframic carbide and &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/tusa-precision.ch\/en\/cobalt-leaching\/\"> <span class=\"screen-reader-text\">Cobalt Leaching<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":14,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"_links":{"self":[{"href":"https:\/\/tusa-precision.ch\/en\/wp-json\/wp\/v2\/pages\/2498"}],"collection":[{"href":"https:\/\/tusa-precision.ch\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/tusa-precision.ch\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/tusa-precision.ch\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tusa-precision.ch\/en\/wp-json\/wp\/v2\/comments?post=2498"}],"version-history":[{"count":0,"href":"https:\/\/tusa-precision.ch\/en\/wp-json\/wp\/v2\/pages\/2498\/revisions"}],"wp:attachment":[{"href":"https:\/\/tusa-precision.ch\/en\/wp-json\/wp\/v2\/media?parent=2498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}