Patent FR778692A successfully refreshed from Google Patents.
Patent US3872995A successfully refreshed from Google Patents.
EP0446934A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fabricating method of composite material, and heat conductive material and fabricating method of heat conductive material
Assignee: Toshiba Corp
•
Filing: 1991-03-14
•
Granted: —
•
Expires: 2011-03-14
Abstract
Abstract In order to obtain a composite material excellent in the bonding strength (adhesion) of two materials and thermal conductivity, the invention presents a fabricating method of a composite material by compounding a high melting material W and a low melting material Cu, which comprises, a first step (1, 2, 3) of forming pores in the high melting material W, having the porosity distribution so that the porosity may be large at least in part of the surface thereof and that the porosity may gradually increase toward that part, and a second step (4) of infiltrating the low melting material Cu from the large porosity part of the material obtained in the first step (1, 2, 3), wherein the composition ratio of the high melting material and low melting material is in a gradient distribution.
Inventors
- 👤 Masashi C/O Intellectual Property Div. Takahashi
- 👤 Yoshiyasu C/O Intellectual Property Div. Itoh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:19
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C22; C22C; C22C1/00; B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; C22C9/00; C23C4/02; F; F28; F28F; F28F13/00; B22F2998/00; B22F2998/10; B22F2999/00; F28F2255/00; F28F2255/18
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
A fabricating method of composite material compounding a high melting material and low melting material characterized by comprising: a first step of forming pores in the high melting material to obtain a material having a porosity distribution, with the porosity large at least in a part of the surface and gradually increasing in the porosity toward that part, and a second step of infiltrating the low melting material from the large porosity part of the material obtained in the first embodiment, wherein the composition ratio of the high melting material and low melting material is in a gradient distribution.
Claim 2
Dependent Claim
36 words
A fabricating method of claim 1, characterized in that the method of forming pores in the high melting material is any one of sintering method, vacuum plasma spraying method, chemical deposition method and physical deposition method.
Claim 3
Dependent Claim
60 words
A fabricating method of claim 1, characterized in that the first step comprises: a) a step of adding and mixing a powder of high melting material and a powder of a second element miscible with this powder in solid solution, and b) a step of forming the mixture obtained in step a) to obtain a reinforced form in solid solution.
Claim 4
Dependent Claim
60 words
A fabricating method of claim 1, characterized in that the first step comprises: c) a step of adding and mixing a powder of high melting material and a powder of a second element or a compound not reacting to this powder, and d) a step of forming the mixture obtained in step c) to obtain a dispersed and reinforced form.
Claim 5
Dependent Claim
80 words
A fabricating method of claim 1, characterized in that the first step comprises: e) a step of obtaining a substrate having the high melting material reinforced in mechanical strength by any one of the methods of rolling, forging, other plastic processing, and alloying, and f) a step of spraying a common material to the substrate obtained in step e) by vacuum plasma thermal spraying to form pores, thereby obtaining a spraying film increased in the porosity to the infiltrating side.
Claim 6
Dependent Claim
27 words
A fabricating method of claim 1, characterized in that the first step is to form pores by spraying a similar material to the substrate by thermal spraying.
Claim 7
Dependent Claim
49 words
A fabricating method of claim 1, characterized in that the first step comprises: g) a step of spraying a similar material to the substrate by thermal spraying to obtain a material having pores, and h) a step of treating the material obtained in step g) by hot isostatic pressing.
Claim 8
Dependent Claim
25 words
A fabricating method of claim 7, characterized in that the hot isostatic pressing treatment is a capsule-free method of treating without putting material in capsule.
Claim 9
Dependent Claim
55 words
A heat receiving material used in ultrahigh temperature field, possessing heat receiving side and anti-heat receiving side, characterized by forming a material layer high in melting point and capable of forming single crystals at the heat receiving side, and distributing the composition ratio in gradient from the heat receiving side to the anti-heat receiving side.
Claim 10
Dependent Claim
186 words
A fabricating method of heat receiving material compounding a low heat conductive material and a high heat conductive material, characterized by comprising: a first step of using a substrate made of plastic material such as doped rolled material and forged material as the low heat conductive material, and laminating a material powder of the same kind as the substrate on one side of the substrate to form a laminate, a second step forming a sintered body by of heating and sintering the laminate obtained in the first step, thereby forming single crystal on the surface to be used as the heat receiving side, by forming pores in the side opposite to this heat receiving side, and by controlling the porosity distribution so that the porosity is large at least in part of the surface and that the porosity increases gradually toward that part, and a third step of infiltrating the high heat conductive material into the pores of the sintered body obtained in the second step, wherein the composition ratio of the low heat conductive material and high heat conductive material is in a gradient distribution.
Claim 11
Dependent Claim
62 words
A fabricating method of claim 10, characterized in that the first step is to obtain a laminate by using a substrate made of plastic material such as doped rolled material and forced material as the low heat conductive material, and laminating the material powder of the same kind as this substrate on one side of the substrate by vacuum plasma thermal spraying.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.