EP0319926A2
Expired / Lapsed
EP
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A Method for the preparation of a diamond-clad machining tool
Assignee: Asahi Diamond Industrial Co Ltd
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Filing: 1988-12-06
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Granted: —
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Expires: 2008-12-06
Abstract
Abstract The diamond-clad machining tool of the invention is prepared by the steps of (a) forming a film (2) of diamond of 10 to 1000 µm thickness by the method of vapor-phase deposition on the surface of a temporary substrate (1) of, e.g., silicon, (b) bonding the diamond film as borne by the temporary substrate to the surface of a base body of the tool (3) by brazing (4) and (c) removing the temporary substrate (1), e.g., by grinding to leave the diamond film (2) bonded to the base body of the tool by brazing. The method is advantageous in the versatility in respect of the material of substrate (1) on which a diamond film (2) is deposited from the vapor phase as well as in the firmness of bonding between the cladding layer (2) and the base body of the tool (3) in comparison with the conventional vapor-phase deposition method of diamond directly to the surface of the base body of a tool.
Inventors
- 👤 Fuminori Okuzumi
- 👤 Junichi Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:01
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/272; B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B27/145; B23P; B23P5/00; C23C16/01; B23B2226/00; B23B2226/31; B23B2228/00; B23B2228/08; B23B2240/00; B23B2240/08; Y; Y10; Y10S; Y10S76/00; Y10S76/12; Y10T; Y10T407/00; Y10T407/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A method for the preparation of a machining tool having a cladding layer of diamond formed by the method of vapor-phase deposition which comprises the steps of: (a) forming a film of diamond having a thickness in the range from 10 to 1000 µm by vapor-phase deposition on the surface of a temporary substrate; (b) bonding the film of diamond as borned by the temporary substrate by brazing with a brazing material to the surface of a base body of a machining tool; and (c) removing away the temporary substrate from the film of diamond bonded to the surface of the base body of the machining tool with a brazing layer therebetween.
Claim 2
Independent Claim
112 words
A method for the preparation of a machining tool having a cladding layer of diamond formed by the method of vapor-phase deposition which comprises the steps of: (a) forming a film of diamond having a thickness in the range from 10 to 1000 µm by vapor-phase deposition on the surface of a temporary substrate; (b) bonding the film of diamond as borned by the temporary substrate by brazing with a brazing material to the surface of a base body of a machining tool; and (c) removing away the temporary substrate from the film of diamond bonded to the surface of the base body of the machining tool with a brazing layer therebetween.
Claim 3
Dependent Claim
39 words
The method for the preparation of a machining tool having a cladding layer of diamond as claimed in claim 1 wherein the temporary substrate is made of a material selected from the group consisting of silicon, molybdenum and tungsten.
Claim 4
Dependent Claim
41 words
The method for the preparation of a machining tool having a cladding layer of diamond as claimed in claim 1 wherein the brazing material is selected from the group consisting of titanium-copper-silver based alloys, copper-nickel-titanium based alloys and silver-copper-palladium based alloys.
Claim 5
Dependent Claim
47 words
The method for the preparation of a machining tool having a cladding layer of diamond as claimed in claim 1 wherein the cladding layer of diamond is formed by the method of plasmainduced chemical vapor-phase deposition in an atmosphere of a gaseous mixture of methane and hydrogen.
Claim 6
Dependent Claim
81 words
A machining tool having a cladding layer of diamond which integrally comprises: (a) a base body of a machining tool; (b) a cladding layer of diamond having a thickness in the range from 10 to 1000 µm; and (c) a layer of a brazing material intervening between the surface of the base body of the machining tool and the cladding layer of diamond bonding the surface and the cladding layer together, the cladding layer of diamond being formed by vapor-phase deposition.
Claim 7
Dependent Claim
81 words
A machining tool having a cladding layer of diamond which integrally comprises: (a) a base body of a machining tool; (b) a cladding layer of diamond having a thickness in the range from 10 to 1000 µm; and (c) a layer of a brazing material intervening between the surface of the base body of the machining tool and the cladding layer of diamond bonding the surface and the cladding layer together, the cladding layer of diamond being formed by vapor-phase deposition.
Claim 8
Dependent Claim
35 words
The machining tool having a cladding layer of diamond as claimed in claim 5 wherein the brazing material is selected from the group consisting of titanium-copper-silver based alloys, copper-nickel-titanium based alloys and silver-copper-palladium based alloys.
References Cited (Backward Citations)
No citation records indexed.
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