| (19) |
 |
|
(11) |
EP 0 101 936 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
30.01.1985 Bulletin 1985/05 |
| (43) |
Date of publication A2: |
|
07.03.1984 Bulletin 1984/10 |
| (22) |
Date of filing: 27.07.1983 |
|
|
| (84) |
Designated Contracting States: |
|
CH DE FR IT LI NL |
| (30) |
Priority: |
28.07.1982 JP 13145782
|
| (71) |
Applicants: |
|
- KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
()
- KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
()
|
|
| (72) |
Inventors: |
|
- Fujita, Hironori
()
- Mizuno, Jiro
()
- Arai, Tohru
()
- Kasuya,Osami
()
- Ono, Koichi
()
- Ando, Hisahiro
()
|
|
| |
|
| (54) |
Boride-dispersed alloy material and process for manufacturing same |
(57) A process for manufacturing a boride-dispersed alloy material having high electrical
and thermal conductivity comprises preparing a metallic matrix containing 0.5 to 40
atom % of at least one boride-forming metal element, such as beryllium, magnesium,
aluminum, titanium, cobalt or nickel, the balance being gold, silver or an alloy of
gold or silver, and diffusing boron into the matrix to form therein a surface layer
in which fine particles of a boride are uniformly dispersed, and which has a thickness
of 0.01 to 0.25 mm.