Patent EP0166708A2 successfully refreshed from Google Patents.
EP0166708A2
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EP
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Body with superhard coating
Assignee: Santrade Ltd
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Filing: 1985-06-24
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Granted: —
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Expires: 2005-06-24
Abstract
Abstract The present invention relates to a compound body consisting of a substrate with a surface coating of one or more dense, finegrained diamond layers, where the diamond grains are directly bonded to each other. Extreme hardness makes the compound body suitable for wear parts- and tools applications. Very good heat conductivity and an extremely high electrical isolation resistance makes the compound body extremely useful to lead away heat in electronic components.
Inventors
- 👤 Herbert Schachner
- 👤 Benno Lux
- 👤 Klas Göran Stjernberg
- 👤 Anders Gösta Thelin
- 👤 Heinz Tippmann
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 21:50
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/02; C23C16/0272; C23C16/0281; C23C30/00; C23C30/005
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
50 words
Compound body comprising a core of one of the following materials: a metal, an alloy of at least two metals, a metalbonded hard metalcompound or a ceramic material characterized in that the body at least partly is covered with a coating comprising one or more CVD-deposited layers of polycrystalline diamond.
Claim 2
Dependent Claim
50 words
Compound body comprising a core of one of the following materials: a metal, an alloy of at least two metals, a metalbonded hard metalcompound or a ceramic material characterized in that the body at least partly is covered with a coating comprising one or more CVD-deposited layers of polycrystalline diamond.
Claim 3
Dependent Claim
23 words
Compound body according to claim 1 characterized in that the first deposited diamond layer is bonded to the core through a non-diamond layer.
Claim 4
Dependent Claim
22 words
Compound body according to claim 1 characterized in that there is between the diamond layers deposited layers of other materials than diamond.
Claim 5
Dependent Claim
40 words
Compound body according to any of the claims 1-3 characterized in that the core comprises an alloy with the main component a metal from group lb to 7b and 8 in the periodic system, or any of these metals only.
Claim 6
Dependent Claim
21 words
Compound body according to any of the claims 1-3 characterized in that the core comprises a noble metal, copper or aluminium.
Claim 7
Dependent Claim
47 words
Compound body according to any of the claims 1-3 characterized in that the core comprises one or more hard phases of metal oxides, metal carbides, metal nitrides, metal borides or mixtures or solutions thereof, where the metal belongs to group 4b to 6b in the periodic system.
Claim 8
Dependent Claim
20 words
Compound body according to claim 6 characterized in that the core material contains a metal belonging to the iron group.
Claim 9
Dependent Claim
35 words
Compound body according to claim 1-3 characterized in that the core comprises at least one of the oxides of Al, Zr or Si or at least one of the nitrides of B, Si or Al.
Claim 10
Dependent Claim
14 words
Compound body according to claim 1-3 characterized in that the core consists of Si-Al-O-N.
Claim 11
Dependent Claim
15 words
Compound body according to claim 2 characterizedin that the bonding layer is a noble metal.
Claim 12
Dependent Claim
22 words
Compound body according to claim 2 characterized in that the bonding layer is a metal able to form stable carbides, preferably Ti.
Claim 13
Dependent Claim
49 words
Compound body according to claim 2 characterized in that the bonding layer is a compound with the chemical formula Me(C x N y O z B t ) where Me is a metal from the group 4b to 6b in the periodic system or Si or Al and 0.45<x+y+z+t<2.1.
Claim 14
Dependent Claim
18 words
Compound body according to claim 3 characterized in that at least one intermediate layer is a noble metal.
Claim 15
Dependent Claim
24 words
Compound body according to claim 3 characterized in that at least one intermediate layer is a metal able to form stable carbides, preferably Ti.
Claim 16
Dependent Claim
49 words
Compound body according to claim 3 characterized in that the bonding layer is a compound with the chemical formula Me(C x N y O z B t ) where Me is a metal from the group 4b to 6b in the periodic system or Si or Al and 0.45<x+y+z+t<2.1.
Claim 17
Dependent Claim
30 words
Compound body according to any of the preceding claims characterized in that the total thickness of the laminated coating is between 0.1 and 500 /um, preferably between 0.5 and 100/um.
Claim 18
Dependent Claim
42 words
Use of a body according to any of the preceding claims as a wear part e g drawing die or tool for metal- or rock cutting or for machining of plastic laminates or fibre composites such as cutting tools, drills, saws, etc.
Claim 19
Dependent Claim
37 words
Use of a body according to any of the claims 1-16 as components in the electronic industry where the combination of extremely good thermal conductivity and high electrical isolation or one of these properties separately is used.
Claim 20
Dependent Claim
26 words
Use of a body according to any of the claims 1-16 for purposes where good scratch resistance or corrosion resistance is necessary or for ornamental purposes.
References Cited (Backward Citations)
No citation records indexed.
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