KR940006764A - Method for producing a wear resistant product having an ultrahard coating and products produced therefrom - Google Patents

Abstract

The present invention relates to an article, such as a cutting tool, which deposits a diamond layer on an intermediate layer to coat an intermediate layer of at least one chromium-carbon compound having a specific range of chromium to carbon ratio on the surface of the forming core. The intermediate layer significantly improves the adhesion of the diamond layer to the surface of the core.

Description

Method for producing a wear resistant product having an ultrahard coating and products produced therefrom

Since this is an open matter, no full text was included.

Claims (10)

A shape core of a material selected from the group consisting of tungsten carbide, titanium carbide, tantalum carbide and niobium carbide, bonded by a binder material selected from the group consisting of cobalt, nickel and mixtures thereof, is prepared and formed on the surface of the core. Depositing an intermediate layer of at least one chromium-carbon compound compatible with the formula CrCx, where x is a value between 0.26 and 0.43; And depositing a diamond layer on top of the intermediate layer. The method of claim 1, wherein the core is placed in a closed enclosure filled with a mixture of chromium metal, an activator and an inert filler, passing the inert gas through the closed container, and heating the core to form the core by chemical vapor deposition. A method of depositing an intermediate layer. The method of claim 2, wherein the stoichiometry of the chromium-carbon interlayer is two ways. The process of claim 2 wherein the reaction temperature is about 6000 to 1000 ° C. The method of claim 1, further comprising carburizing the surface of the core prior to depositing the intermediate layer. The method of claim 1, further comprising activating a surface of the intermediate layer prior to depositing the diamond layer. The method of claim 1, further comprising heat treating the core after deposition of the diamond layer. Preparing a shape core of a material selected from the group consisting of nickel-based superalloys and cobalt-based superalloys; Carburizing the surface of the core; Depositing an intermediate layer of at least one chromium-carbon compound corresponding to the formula CrCx, where x is a value of 0.26 to 0.43; Activate the surface of the fraudulent interlayer; Depositing a diamond layer on the surface of the intermediate layer; A method of manufacturing a wear resistant fan blade of a turbine engine, comprising heat treating a core having the intermediate layer and a diamond layer deposited thereon. A shape core of a material selected from the group consisting of tungsten carbide, titanium carbide, tantalum carbide and niobium carbide, bonded by a binder material selected from the group consisting of cobalt, nickel and mixtures thereof; An intermediate layer of at least one chromium-carbon compound corresponding to the formula CrCx, where x is a value of 0.26 to 0.43, deposited on the surface of the core; And a diamond layer on the intermediate layer. A shape core of a material selected from the group consisting of nickel-based superalloys and cobalt-based superalloys; An intermediate layer of at least one chromium-carbon compound corresponding to the formula CrCx, where x is a value of 0.26 to 0.43, deposited on the surface of the core; And a diamond layer on the intermediate layer. A wear resistant fan blade for a turbine engine. ※ Note: The disclosure is based on the initial application.