Patent EP0285276A2 successfully refreshed from Google Patents.
US5656383A
Expired / Lapsed
US
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Coated member having excellent hardness and, adhesive properties
Assignee: Mitsubishi Materials Corp
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Filing: 1995-05-02
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Granted: 1997-08-12
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Expires: 2015-05-02
Abstract
Abstract A coated member comprising a substrate, an intermediate layer on the substrate consisting essentially of aluminum and titanium, and a hard coating of (Al, Ti) (N, C) on the intermediate layer. The coated member has an improved wear resistance because the intermediate layer raises the level of adhesion between the substrate and the hard coating.
Inventors
- 👤 Yusuke Tanaka
- 👤 Taiitsu Aoki
- 👤 Yasuyuki Yamada
- 👤 Masahiro Machida
- 👤 Takeo Komine
- 👤 Yasushi Onishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:33
CPC Classifications
C; C23; C23C; C23C28/00; C23C28/30; C23C28/32; C23C28/321; C23C14/00; C23C14/06; C23C14/0664; C23C14/14; C23C14/16; C23C14/165; C23C28/34; C23C28/347; C23C30/00; C23C30/005; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12576; Y10T428/12736; Y10T428/12743; Y10T428/12764; Y10T428/12771; Y10T428/12806
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
73 words
A coated member comprising: a substrate; a metallic intermediate layer formed on said substrate having a thickness in the range of 5-500 nm and having a composition given by the following expression, Al.sub.z Ti.sub.l-z, where 0.05≦z≦0.75; and a hard coating formed on said metallic intermediate layer having a composition given by the following expression, (Al.sub.x Ti.sub.l-x) (N.sub.y C.sub.l-y), where 0.56≦x≦0.75, and 0.6≦y≦1, wherein said metallic intermediate layer consists essentially of Al and Ti.
Claim 2
Dependent Claim
73 words
A coated member comprising: a substrate; a metallic intermediate layer formed on said substrate having a thickness in the range of 5-500 nm and having a composition given by the following expression, Al.sub.z Ti.sub.l-z, where 0.05≦z≦0.75; and a hard coating formed on said metallic intermediate layer having a composition given by the following expression, (Al.sub.x Ti.sub.l-x) (N.sub.y C.sub.l-y), where 0.56≦x≦0.75, and 0.6≦y≦1, wherein said metallic intermediate layer consists essentially of Al and Ti.
Claim 3
Dependent Claim
61 words
The coated member according to claim 1 wherein said intermediate layer has a thickness in the range 30-300 nm and has a composition given by the following expression, Al.sub.z Ti.sub.l-z, where 0.25≦z≦0.70; and said hard coating has a thickness in the range of 0.1-20 μm and has a composition given by the following expression, (Al.sub.x Ti.sub.l-x)(N.sub.y C.sub.l-y), where 0.58≦x≦0.70, and 0.8≦y≦1.
Claim 4
Dependent Claim
17 words
The coated member according to claim 1 or 2 wherein said coated member is a cutting tool.
Claim 5
Dependent Claim
47 words
The coated member according to claim 1 or 2 wherein said coated member is a roughing end mill; and said substrate is made from a high speed steel having V and Co included in amounts given by the following expression; 0<(percentage weight of V+percentage weight of Co)<15.
Claim 6
Dependent Claim
54 words
The coated member according to claim 1 or 2 wherein said hard coating is further characterised in that there are no macro-particles protruding from the surface of the hard coating to any substantial extent, and that craters of a depth in the range of 0.2-2 μm exist on the surface of the hard coating.
Claim 7
Dependent Claim
24 words
The coated member according to claim 1 or 2 wherein said intermediate layer and hard coating are formed using an arc discharge ion-plating method.
Claim 8
Dependent Claim
19 words
The coated member of claim 4, wherein said substrate has a hardness equal to or greater than HV 900.
Claim 9
Dependent Claim
15 words
The coated member of claim 1, wherein said intermediate layer further comprises carbon and oxygen.
Claim 10
Dependent Claim
17 words
The coated member of claim 1, wherein said intermediate layer consists of aluminum, titanium, oxygen and carbon.
Claim 11
Dependent Claim
16 words
The coated member of claim 1, wherein said hard coating has a thickness of 2-8 μm.
Claim 12
Dependent Claim
25 words
The coated member of claim 1, wherein said intermediate layer has a composition given by the following expression, Al z Ti l-z , where 0.50≦z≦0.65
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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) | 2000-08-11 | 2001-02-10 | 2001-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-11 | 2005-02-10 | 2005-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-11 | 2009-02-10 | 2009-08-12 | $7700.00 | Window Closed / Lapsed |