Patent US5164051A successfully refreshed from Google Patents.
US5164051A
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US
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Method for vapor phase synthesis of diamond on electrochemically treated substrate
Assignee: Resonac Holdings Corp
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Filing: 1990-09-20
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Granted: 1992-11-17
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Expires: 2010-09-20
Abstract
Abstract A diamond film of the vapor phase process is produced by a method which comprises a step of (1) electrolytically polishing the surface of a hard metal substrate with a pulse voltage or, after electrolytic polishing, further subjecting it to a scratching treatment with an abrasive powder or (2) electrolytically polishing the surface of a hard metal substrate with a constant voltage and thereafter subjecting it to a scratching treatment with an abrasive powder, thereby heightening the adhesive force of the surface of the substrate, and then effecting deposition of dense diamond of high adhesive strength by the vapor phase process on the substrate.
Inventors
- 👤 Kunio Komaki
- 👤 Masaaki Yanagisawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:16
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/02; C23C16/0254; C23C16/0227; C23C16/22; C23C16/26; C23C16/27; C23C16/271; Y; Y10; Y10S; Y10S204/00; Y10S204/09
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
73 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate, which method comprises a step of electrolytically polishing a hard metal substrate by the use of a pulse voltage thereby causing formation of a group of protuberances on the surface thereof and heightening the adhesive force of the surface thereof and a step of depositing dense diamond of high adhesive strength on said substrate by a vapor phase process.
Claim 2
Independent Claim
73 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate, which method comprises a step of electrolytically polishing a hard metal substrate by the use of a pulse voltage thereby causing formation of a group of protuberances on the surface thereof and heightening the adhesive force of the surface thereof and a step of depositing dense diamond of high adhesive strength on said substrate by a vapor phase process.
Claim 3
Dependent Claim
48 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 1, wherein said pulse voltage has a pulse width in the range of 1 m.sec to 1 sec and a pulse frequency in the range of 500 Hz to 1/10 Hz.
Claim 4
Dependent Claim
31 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 1, wherein an electrolytic solution used for said electrolytic polishing is a mineral acid.
Claim 5
Dependent Claim
38 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 3, wherein said mineral acid is hydrochloric acid and said hydrochloric acid is an aqueous 5 to 30% hydrochloric acid solution.
Claim 6
Dependent Claim
58 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 1, wherein said protuberances have a length in the range of 1 to 50 μm, a thickness in the range of 1 to 50 μm, and a maximum density in the range of 1×10 3 to 1×10 5 pieces/mm 2 .
Claim 7
Dependent Claim
39 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 1, wherein said vapor phase process is a combustion flame process and said substrate is disposed in a diamond forming region thereof.
Claim 8
Dependent Claim
34 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 6, wherein said diamond forming region is in the region for incomplete combustion in the combustion flame.
Claim 9
Dependent Claim
56 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 1, wherein said step for heightening the adhesive force of the substrate surface includes a scratching treatment with an abrasive powder performed subsequently to the formation of said group of protuberances on said substrate surface by the electrolytic polishing.
Claim 10
Dependent Claim
50 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 8, wherein said abrasive powder used for said scratching treatment is the powder of at least one member selected from the group consisting of diamond, cBN, Al 2 O 3 , and SiC.
Claim 11
Dependent Claim
39 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 9, wherein said scratching treatment comprises forming a paste of said abrasive powder and grinding the electrolytically polished surface with said paste.
Claim 12
Dependent Claim
31 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 10, wherein said abrasive powder is diamond and said paste is a diamond paste.
Claim 13
Dependent Claim
45 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 9, wherein said scratching treatment is carried out by immersing said electrolytically treated substrate in a solution suspending said abrasive powder and imparting ultrasonic vibration to said suspension.
Claim 14
Dependent Claim
41 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 12, wherein said substrate is immersed in a suspension of said diamond abrasive powder in alcohol and said suspension is subjected to ultrasonic vibration.
Claim 15
Independent Claim
84 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate, which method comprises a step of electrolytically polishing a hard metal substrate by the use of a constant voltage and then performing thereon a scratching treatment with an abrasive powder thereby causing formation of a group of protuberances on the surface thereof and heightening the adhesive force of the surface thereof and a step of depositing dense diamond of high adhesive strength on said substrate by a vapor phase process.
Claim 16
Independent Claim
84 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate, which method comprises a step of electrolytically polishing a hard metal substrate by the use of a constant voltage and then performing thereon a scratching treatment with an abrasive powder thereby causing formation of a group of protuberances on the surface thereof and heightening the adhesive force of the surface thereof and a step of depositing dense diamond of high adhesive strength on said substrate by a vapor phase process.
Claim 17
Dependent Claim
31 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 14, wherein an electrolytic solution used for said electrolytic polishing is a mineral acid.
Claim 18
Dependent Claim
38 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 15, wherein said mineral acid is hydrochloric acid and said hydrochloric acid is an aqueous 5 to 30% hydrochloric acid solution.
Claim 19
Dependent Claim
58 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 14, wherein said protuberances have a length in the range of 1 to 50 μm, a thickness in the range of 1 to 50 μm, and a maximum density in the range of 1×10 3 to 1×10 5 pieces/mm 2 .
Claim 20
Dependent Claim
39 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 14, wherein said vapor phase process is a combustion flame process and said substrate is disposed in a diamond forming region thereof.
Claim 21
Dependent Claim
34 words
A method for the vapor phase synthesis of diamond on an electrochemically treated substrate according to claim 18, wherein said diamond forming region is in the region for incomplete combustion in the combustion flame.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |