{"id":1307,"date":"2025-03-04T14:39:51","date_gmt":"2025-03-04T14:39:51","guid":{"rendered":"https:\/\/expanite.com?p=1307"},"modified":"2026-05-05T08:13:19","modified_gmt":"2026-05-05T08:13:19","slug":"replacement-or-reinforcement-of-dlc","status":"publish","type":"post","link":"https:\/\/expanite.com\/it\/dlc\/","title":{"rendered":"Sostituzione o rinforzo dei rivestimenti DLC (articolo in inglese)"},"content":{"rendered":"\r\n

Expanite – the Danish pioneer of surface hardening of stainless steel and titanium replaces or supplements the widespread DLC coatings with its technology. In addition to technical and commercial advantages, the sustainability of the Expanite process is playing an increasing role for customers.<\/strong><\/em><\/p>\r\n\r\n\r\n\r\n

DLC coating<\/strong><\/em><\/h2>\r\n\r\n\r\n
\"\"Diamond-like carbon or DLC coatings are today used in many areas where excellent friction properties and good wear resistance are required on component surfaces. The DLC layers applied by complex, time-consuming and costly PVD or PACVD processes are usually only a few micrometres thick. If the part also is required to be corrosion-resistant, making the use of stainless steels mandatory, the DLC system has some weak points. The soft stainless steel as the carrier medium and the correspondingly high hardness gradient to the thin DLC layer promote the eggshell effect this might lead to a defect in the coating, and it will easily start peeling off. \r\n\r\n\r\n

Diffusion hardness layer<\/strong><\/em><\/h2>\r\n\r\n\r\nSurface hardening of Expanite brings the solution using a gas-based diffusion process to store carbon and nitrogen deep in the component surface. This guarantees a better load-bearing capacity and efficiently counteracts the eggshell effect. If defects occur in the hardness layer while the part is in use, this does not lead to further flaking because, in contrast to the applied DLC layer, the Expanite technology is a diffusion hardness layer that is coherent with the base material. \r\n\r\n\r\n

Environmentally friendly<\/strong><\/em><\/h2>\r\n\r\n\r\nThe ExpaniteHard-Ti process provides highly effective protection against wear and scratches. The method is not a coating process, hence all the drawbacks of coatings, including the risks of chipping\/spalling off and inconsistencies in layers are completely avoided. In fact, it is the surface of the material itself, which is hardened. The ExpaniteHard-Ti process has a significantly greater level of protection against scratches than that afforded by the hardness of the base material and the hardened parts retains the design colour or as Mr. Pataki describe it: \u201cI tried hard to scratch the pen after the process, but it is practically impossible – I made before and after comparison and the results are spectacular; the pen is now virtually unscratchable\u201d<\/em> \r\n\r\nA positive side effect: the gas-based diffusion process is significantly more energy-efficient and environmentally friendly than comparable wear protection processes and, thanks to the treatment in vacuum, no time-consuming cleaning of the parts, e.g., with aggressive chemicals, is necessary after hardening with the Expanite process. \r\n\r\n“We have already replaced the classic DLC coating in various applications, from the typical running and sealing surfaces in bearings, through pump components or knife edges to applications in medical technology,<\/em>” explains Dr. Holger Selg, application expert and Expanite Sales Director DACH, and continues: \u201cIn some cases, the two technologies were also combined and a DLC layer was applied in addition to our Expanite hardness layer in order to obtain a very resilient system. “<\/em> \r\n\r\nThe Expanite technology, specially developed for corrosion-resistant materials, offers a solution for austenitic, martensitic, ferritic and duplex stainless steels as well as for expensive nickel -based alloys such as Inconel and Hastelloy. The new special process ExpaniteHard-Ti, which the Expanite team of experts in Denmark has developed to market maturity in recent years, is used for titanium materials. \r\n\r\n\r\n

About Expanite<\/strong><\/em><\/h2>\r\n\r\n\r\n\r\n

Expanite offers state-of-the-art solutions for surface hardening treatment of stainless steels and titanium. With Expanite’s processes, it is possible to increase the material\u2019s surface hardness tenfold while at the same time maintaining and even increasing its corrosion resistance. Expanite is a global organization with a combined development and production facility near Copenhagen, Denmark, and hardening capacity in both US, Germany, Korea and China. Expanite’s solutions are flexible and can be introduced directly into a customer\u2019s own production line as part of a licensing arrangement. Learn more on www.expanite.com<\/a><\/em>.<\/p>\r\n\r\n\r\n\r\n

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Download PDF<\/strong><\/a><\/div>\r\n<\/div>\r\n\r\n\r\n  ","protected":false},"excerpt":{"rendered":"

Expanite – the Danish pioneer of surface hardening of stainless steel and titanium replaces or supplements the widespread DLC coatings with its technology. In addition to technical and commercial advantages, the sustainability of the Expanite process is playing an increasing role for customers. DLC coating Diamond-like carbon or DLC coatings are today used in many […]<\/p>\n","protected":false},"author":2,"featured_media":2606,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-1307","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-press"],"_links":{"self":[{"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/posts\/1307","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/comments?post=1307"}],"version-history":[{"count":16,"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/posts\/1307\/revisions"}],"predecessor-version":[{"id":8936,"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/posts\/1307\/revisions\/8936"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/media\/2606"}],"wp:attachment":[{"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/media?parent=1307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/categories?post=1307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/expanite.com\/it\/wp-json\/wp\/v2\/tags?post=1307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}