EP0333149A2
Expired / Lapsed
EP
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Ceramic composite and method of preparation thereof
Assignee: Hitachi Ltd
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Filing: 1989-03-15
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Granted: —
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Expires: 2009-03-15
Abstract
Abstract A ceramic composite in which a barrier layer of at least one metal selected from those of Groups Va and VIa of the periodic table is provided on the surface of a carbide, nitride, oxide or boride ceramic member (2), and a soldering material (4) containing 0.5-70% by weight of at least one element selected from those of Group IVa of the periodic table or a soldering material (4) comprising Ni as the principal component is metallized or joined thereonto is obtained by forming the barrier on the surface of the ceramic member (2) by means of vapor deposition, sputtering, chemical vapor deposition, chemical plating or like methods and forming a soldering material layer (4) on the barrier layer by heating it at a temperature not below the melting point of the soldering material (4).
Inventors
- 👤 Hisanori Okamura
- 👤 Masahiko Sakamoto
- 👤 Hirosi Akiyama
- 👤 Mutuo Kamoshita
- 👤 Takao Funamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 13:07
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/64; C04B35/645; C04B37/00; C04B37/003; C04B37/006; C04B37/02; C04B37/023; C04B37/026; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/123; C04B2237/125; C04B2237/126; C04B2237/127; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/365; C04B2237/40; C04B2237/403; C04B2237/405; C04B2237/406; C04B2237/407; C04B2237/50; C04B2237/70; C04B2237/708; C04B2237/72; C04B2237/86
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
73 words
A ceramic composite in which a barrier layer of at least one metal selected from those of Groups Va and VIa of the periodic table is provided on the surface of a ceramic member (2), and a soldering material (4) containing 0.5-70% by weight of at least one element selected from those of Group IVa of the periodic table or a soldering material (4) comprising Ni as the principal component is provided thereon.
Claim 2
Dependent Claim
73 words
A ceramic composite in which a barrier layer of at least one metal selected from those of Groups Va and VIa of the periodic table is provided on the surface of a ceramic member (2), and a soldering material (4) containing 0.5-70% by weight of at least one element selected from those of Group IVa of the periodic table or a soldering material (4) comprising Ni as the principal component is provided thereon.
Claim 3
Dependent Claim
31 words
A ceramic composite according to claim 1, wherein the soldering material (4) contains 0.5-30% by weight of at least one element selected from those of Group IVa of the periodic table.
Claim 4
Dependent Claim
31 words
A ceramic composite according to claim 1, wherein the soldering material (4) contains 0.5-20% by weight of at least one element selected from those of Group IVa of the periodic table.
Claim 5
Dependent Claim
17 words
A ceramic composite according to claim 1, wherein said metal layer has a thickness of 0.1-10 µm.
Claim 6
Dependent Claim
54 words
A ceramic composite according to claim 1, wherein the remaining component of the soldering material (4) containing the element of Group IVa is a metal, or an alloy comprising as the principal component at least two thereof, selected from the group consisting of Cu, Ag, Ni, Cr, Pd, Pt, Al, Si, Co and Mn.
Claim 7
Dependent Claim
46 words
A ceramic composite article comprising the ceramic composite according to claim 1 and another member joined thereonto with or without the aid of another soldering material (4) comprising a hard solder or soft solder free of any element of Group IVa of the periodic table therebetween.
Claim 8
Dependent Claim
48 words
A silicon carbide ceramic composite, in which there are joined, respectively, a Cr-containing layer onto the surface of a silicon carbide member(2), and a soldering material layer (4) containing 0.5-70% by weight of at least one element selected from those of Group IVa of the periodic table thereonto.
Claim 9
Dependent Claim
48 words
A silicon carbide ceramic composite, in which there are joined, respectively, a Cr-containing layer onto the surface of a silicon carbide member(2), and a soldering material layer (4) containing 0.5-70% by weight of at least one element selected from those of Group IVa of the periodic table thereonto.
Claim 10
Dependent Claim
49 words
A silicon carbide ceramic composite article which comprises the ceramic composite according to claim 7 and another member joined thereonto with or without the aid of another soldering material (4) comprising a hard solder or soft solder free of any element of Group IVa of the periodic table therebetween.
Claim 11
Dependent Claim
18 words
A silicon carbide composite according to claim 7, wherein the Cr-containing layer has a thickness of 0.5-10 µm.
Claim 12
Dependent Claim
56 words
A silicon carbide composite according to claim 7, wherein the remaining component of the soldering material (4) containing the element of Group IVa of the periodic table is a metal, or an alloy comprising as the principal component at least two thereof, selected from the group consisting of Cu, Ag, Ni, Pd, Al, Si, and Mn.
Claim 13
Dependent Claim
12 words
A heater which comprises the silicon carbide composite according to claim 8.
Claim 14
Dependent Claim
15 words
A package for a semiconductor which comprises the silicon carbide composite according to claim 8.
Claim 15
Independent Claim
102 words
A method of preparation of a ceramic composite comprising the steps of (1) forming a barrier layer of at least one metal selected from those of Groups Va and VIa of the periodic table on the surface of a ceramic member(2) and (2) providing thereon a soldering material (4) containing 0.5-70% by weight of at least one element selected from those of Group IVa of the periodic table or a soldering material (4) comprising Ni as the principal component, and heating it at a temperature not below the melting point of the soldering material (4) to form a soldering material layer (4).
Claim 16
Independent Claim
102 words
A method of preparation of a ceramic composite comprising the steps of (1) forming a barrier layer of at least one metal selected from those of Groups Va and VIa of the periodic table on the surface of a ceramic member(2) and (2) providing thereon a soldering material (4) containing 0.5-70% by weight of at least one element selected from those of Group IVa of the periodic table or a soldering material (4) comprising Ni as the principal component, and heating it at a temperature not below the melting point of the soldering material (4) to form a soldering material layer (4).
Claim 17
Dependent Claim
36 words
A method of preparation of a ceramic composite according to claim 13, wherein the soldering material (4) contains 0.5-30% by weight of at least one element selected from those of Group IVa of the periodic table.
Claim 18
Dependent Claim
36 words
A method of preparation of a ceramic composite according to claim 13, wherein the soldering material 4) contains 0.5-20% by weight of at least one element selected from those of Group IVa of the periodic table.
Claim 19
Dependent Claim
83 words
A method of preparation of a silicon carbide ceramic composite according to claim 7, comprising the steps of (1) forming a Cr-containing layer on the surface of a silicon carbide ceramic member (2), and (2) providing thereon a soldering material (4) containing 0.5-70% by weight of at least one element selected from those of Group IVa of the periodic table, and heating it at a temperature not below the melting point of the soldering material (4) to form a soldering material layer (4).
Claim 20
Dependent Claim
37 words
A method of preparation of a silicon carbide composite according to claim 16, wherein the soldering materiai (4) contains 0.5-30% by weight of at least one element selected from those of Group IVa of the periodic table.
Claim 21
Dependent Claim
37 words
A method of preparation of a silicon carbide composite according to claim 16, wherein the soldering material 4) contains 0.5-20% by weight of at least one element selected from those of Group IVa of the periodic table.
Claim 22
Dependent Claim
28 words
A method of preparation according to claim 13, wherein the barrier layer of metal is formed by means of vapor deposition, sputtering, chemical vapor deposition or chemical plating.
Claim 23
Dependent Claim
41 words
A method of preparation according to claim 13, wherein the barrier layer of metal is formed by printing or coating a Cr powder in the form of paste and then heating it in a non-oxidizing atmosphere or in vacuo at 800-1200°C.
References Cited (Backward Citations)
No citation records indexed.
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