EP0589641A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of producing wear resistant articles
Assignee: General Electric Co
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Filing: 1993-09-17
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Granted: —
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Expires: 2013-09-17
Abstract
Abstract Articles such as cutting tools are coated with an intermediate layer, on the surface of a shaped core, of at least one chromium-carbon compound having a ratio of chromium to carbon within a specific range, followed by deposition of a diamond layer on the intermediate layer. The intermediate layer significantly improves adhesion of the diamond layer to the surface of the core.
Inventors
- 👤 Dong-Sil Park
- 👤 Paul Joseph Diconza
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 08:50
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/288; B; B23; B23P; B23P15/00; B23P15/02; B23P15/28; C; C23; C23C; C23C16/00; C23C16/02; C23C16/0272; C23C16/22; C23C16/26; C23C16/27; C23C16/271; C23C30/00; C23C30/005
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
A method of producing a wear resistant cutting tool, comprising: producing a shaped core of a material selected from the group consisting of tungsten carbide, titanium carbide, tantalum carbide and niobium carbide, the core being bonded by a binder material selected from the group consisting of cobalt, nickel and mixtures thereof; depositing on the surface of said core an intermediate layer of at least one chromium-carbon compound corresponding to the formula CrC x , where x varies from 0.26 to 0.43; and depositing a diamond layer on top of the intermediate layer.
Claim 2
Dependent Claim
46 words
The method of claim 1 wherein the intermediate layer is deposited by chemical vapor deposition by placing said core inside an enclosure packed with a mixture of metallic chromium, an activator and an inert filler, passing an inert gas through said enclosure and heating said core.
Claim 3
Dependent Claim
18 words
The method of claim 1 or claim 2 wherein the stoichiometry of the chromium-carbon intermediate layer is bimodal.
Claim 4
Independent Claim
13 words
The method of any preceding claim wherein the reaction temperature is about 600-1000°C.
Claim 5
Independent Claim
21 words
The method of any preceding claim further comprising carburizing the surface of said core prior to deposition of said intermediate layer.
Claim 6
Independent Claim
22 words
The method of any preceding claim further comprising activating the surface of said intermediate layer prior to deposition of said diamond layer.
Claim 7
Independent Claim
18 words
The method of any preceding claim further comprising heat treating said core after deposition of said diamond layer.
Claim 8
Independent Claim
102 words
A method of producing a wear resistant fan blade of a turbine engine comprising: producing a shaped core of a material selected from the group consisting of nickel based superalloy and cobalt based superalloy; carburizing the surface of the core; depositing on the surface of said core an intermediate layer of at least one chromium-carbon compound corresponding to the formula CrC x , where x varies from 0.26 to 0.43; and activating the surface of the intermediate layer; depositing a diamond layer on the surface of the intermediate layer; and heat treating the core having the intermediate and diamond layers deposited thereon.
Claim 9
Dependent Claim
45 words
A wear resistant cutting tool comprising: a shaped of a material selected from the group consisting of tungsten carbide, titanium carbide, tantalum carbide and niobium carbide, said core being bonded by a binder material selected from the group consisting of cobalt, nickel and mixtures thereof;
Claim 10
Dependent Claim
67 words
A wear resistant fan blade of a turbine engine comprising: a shaped core of a material selected from the group consisting of nickel based superalloy and cobalt based superalloy; an intermediate layer of at least one chromium-carbon compound corresponding to the formula CrC x , where x varies from 0.26 to 0.43, disposed on the surface of said core; and a diamond layer on said intermediate layer.
References Cited (Backward Citations)
No citation records indexed.
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