Oerlikon Surface Solutions Ag, Pfaffikon

Cemecon Ag

Dirk Breidt

Oliver Lemmer

Martin Frank

Olaf Dietrich

A method for producing a selective diamond-coated substrate, wherein the diamond-coated substrate includes: a substrate having surfaces including cemented carbide material, areas selected to be coated, and areas not selected to be coated; and one or more diamond coatings on the areas selected to be coated, the method including following steps in order: a first masking step, wherein the areas not selected to be coated but could be chemically attacked during a chemical pre-treatment step, are masked by applying a latex-mask covering these areas; one or more chemical pre-treatment steps; a mask-removing step, wherein the latex-mask is removed; a second masking step, wherein the areas of the substrate surfaces from which the latex-mask was removed and not selected to be coated but could be coated with one or more diamond coatings during one or more coating steps, are covered with one or more masking-covers; and one or more coating steps.

Method for selective deposition of diamond coatings

The invention refers to a method and apparatus for CVD coating and to a coated body. To improve the mechanical properties of the structure and surface of the body and to make the method and apparatus as simple and cost-effective as possible, it is suggested in the method, in which a layer is deposited on a substrate in a carbon-containing gas atmosphere: In this way, a body can be produced with a substrate and at least one layer deposited on the surface of the substrate, wherein the layer consists of nano-crystalline diamond.

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Erkelenz, Germany

Dirk Breidt