US5135807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond-coated member and process for the preparation thereof
Assignee: Niterra Co Ltd
•
Filing: 1990-03-09
•
Granted: 1992-08-04
•
Expires: 2010-03-09
Abstract
Abstract The present invention relates to a diamond-coated member characterized by superposing an acicular diamond layer, an intermediate layer formed by a metal belonging to either of the group IIIb, IVa, Va or VIa of the periodic table or by a compound containing the said metal, Si or B, and a non-acicular diamond layer on the surface of a base material and to a process for the preparation of a diamond-coated member characterized in that a diamond layer is formed on the surface of a base material by vapor phase synthesis method; the resulting diamond layer is converted into acicular diamond by exposing the resulting diamond layer to a gas obtainable by exciting an oxygen-containing etching gas; an intermediate layer comprising a metal belonging to either of the group IIIb, IVa, Va or VIa of the periodic table or by a compound containing the said metal, Si or B is formed on the resulting acicular diamond; and the resulting intermediate layer is exposed to a gas obtainable by exciting a raw material gas containing a carbon source gas. The diamond-coated member according to the present invention is useful as cutting tools and abrasion resistant members.
Inventors
- 👤 Toshimichi Ito
- 👤 Masaya Tsubokawa
- 👤 Nariyuki Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/274; C23C14/00; C23C14/06; C23C14/0605; C23C14/58; C23C16/02; C23C16/0227; C23C16/0245; C23C16/0272; C23C16/279; C23C16/56; C30; C30B; C30B25/00; C30B25/02; C30B29/00; C30B29/02; C30B29/04; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/30; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
66 words
A diamond-coated member comprising an acicular diamond layer, an intermediate layer formed by a metal belonging to either of the group IIIb, IVa, Va or VIa of the periodic table or by a compound containing said metal, Si or B, and a non-acicular diamond layer superimposed on the surface of a base material, wherein said acicular diamond layer is in direct contact with said base material.
Claim 2
Dependent Claim
66 words
A diamond-coated member comprising an acicular diamond layer, an intermediate layer formed by a metal belonging to either of the group IIIb, IVa, Va or VIa of the periodic table or by a compound containing said metal, Si or B, and a non-acicular diamond layer superimposed on the surface of a base material, wherein said acicular diamond layer is in direct contact with said base material.
Claim 3
Dependent Claim
22 words
A diamond-coated member as claimed in claim 1, wherein the base material is a metal, a sintered metal or a sintered ceramic.
Claim 4
Dependent Claim
17 words
A diamond-coated member as claimed in claim 1, wherein the base material is a super hard alloy.
Claim 5
Dependent Claim
32 words
A diamond-coated member as claimed in claim 1, wherein the acicular diamond layer has a thickness ranging from 0.1 micron to 100 microns and an aspect ratio ranging from 3 to 100.
Claim 6
Dependent Claim
25 words
A diamond-coated member as claimed in claim 1, wherein the intermediate layer comprises the metal belonging to the group VIa or the compound containing Si.
Claim 7
Dependent Claim
18 words
A diamond-coated member as claimed in claim 1, wherein the intermediate layer comprises W, WSi 2 or Si.
Claim 8
Dependent Claim
115 words
A process for the preparation of a diamond-coated member characterized in that a diamond layer is formed on the surface of a base material by vapor phase synthesis method; the resulting diamond layer is converted into acicular diamond by exposing the resulting diamond layer to a gas obtainable by exciting an oxygen-containing etching gas; an intermediate layer comprising a metal belonging to either of the group IIIb, IVa, Va or VIa of the periodic table or by a compound containing the said metal, Si or B is formed on the resulting acicular diamond; and the resulting intermediate layer is exposed to a gas obtainable by exciting a raw material gas containing a carbon source gas.
Claim 9
Dependent Claim
115 words
A process for the preparation of a diamond-coated member characterized in that a diamond layer is formed on the surface of a base material by vapor phase synthesis method; the resulting diamond layer is converted into acicular diamond by exposing the resulting diamond layer to a gas obtainable by exciting an oxygen-containing etching gas; an intermediate layer comprising a metal belonging to either of the group IIIb, IVa, Va or VIa of the periodic table or by a compound containing the said metal, Si or B is formed on the resulting acicular diamond; and the resulting intermediate layer is exposed to a gas obtainable by exciting a raw material gas containing a carbon source gas.
Claim 10
Dependent Claim
28 words
A process for the preparation of the diamond-coated member as claimed in claim 7, wherein the base material is a metal, a sintered metal or a sintered ceramic.
Claim 11
Dependent Claim
23 words
A process for the preparation of the diamond-coated member as claimed in claim 7, wherein the base material is a super hard alloy.
Claim 12
Dependent Claim
38 words
A process for the preparation of the diamond-coated member as claimed in claim 7, wherein the acicular diamond layer has a thickness ranging from 0.1 micron to 100 microns and an aspect ratio ranging from 3 to 100.
Claim 13
Dependent Claim
31 words
A process for the preparation of the diamond-coated member as claimed in claim 7, wherein the intermediate layer comprises the metal belonging to the group VIa or the compound containing Si.
Claim 14
Dependent Claim
24 words
A process for the preparation of the diamond-coated member as claimed in claim 7, wherein the intermediate layer comprises W, WSi 2 or Si.
References Cited (Backward Citations)
JPS58126972A
Cited
JPS61117281A
Cited
US4707384A
Cited
JPS6210301A
Cited
JPS6232268A
Cited
JPS63215597A
Cited
JPS63286575A
Cited
JPS63307196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |