EP0411298A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method for improving adhesion of synthetic diamond coatings to substrates
Assignee: General Electric Co
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Filing: 1990-06-22
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Granted: —
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Expires: 2010-06-22
Abstract
Abstract Adhesion of diamond coatings formed by chemical vapor deposition to substrates, particularly molybdenum substrates, is improved by first applying to the substrate a silicon layer. Preferably, the silicon layer is applied via an auxiliary substrate comprising elemental or chemically combined silicon, from which a silane diffuses to the principal substrate, where it is reduced to silicon and deposits thereon.
Inventors
- 👤 Thomas Richard Anthony
- 👤 James Fulton Fleisher
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 02:07
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/24; B; B05; B05D; B05D5/00; B05D5/10; C23C16/02; C23C16/0272
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
41 words
A method for improving adhesion of a diamond coating produced by chemical vapor deposition on at least one substrate which comprises first applying to said substrate a layer of elemental silicon, and subsequently depositing said diamond coating on said silicon layer.
Claim 2
Independent Claim
41 words
A method for improving adhesion of a diamond coating produced by chemical vapor deposition on at least one substrate which comprises first applying to said substrate a layer of elemental silicon, and subsequently depositing said diamond coating on said silicon layer.
Claim 3
Dependent Claim
11 words
A method according to claim 1 wherein the substrate comprises molybdenum.
Claim 4
Dependent Claim
21 words
A method according to claim 2 wherein the silicon layer is formed by the conversion of a silane to elemental silicon.
Claim 5
Dependent Claim
22 words
A method according to claim 3 wherein the substrate is contacted with a gas mixture comprising hydrogen, a hydrocarbon and a silane.
Claim 6
Dependent Claim
22 words
A method according to claim 3 wherein the silane is provided by an auxiliary substrate comprising silicon in elemental or combined form.
Claim 7
Dependent Claim
13 words
A method according to claim 5 wherein the auxiliary substrate comprises silicon carbide.
Claim 8
Dependent Claim
29 words
An article comprising a substrate with an adherent diamond coating with a thickness of at least 100 microns, produced by chemical vapor deposition, on at least a portion thereof.
Claim 9
Dependent Claim
29 words
An article comprising a substrate with an adherent diamond coating with a thickness of at least 100 microns, produced by chemical vapor deposition, on at least a portion thereof.
Claim 10
Dependent Claim
11 words
An article according to claim 7 wherein the substrate comprises molybdenum.
Claim 11
Dependent Claim
19 words
An article according to claim 8 further comprising an intermediate adhesion promoting layer comprising molybdenum silicide and elemental silicon.
References Cited (Backward Citations)
EP0245688A1
Cited
WO1988007599A1
Cited
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