| (19) |
 |
|
(11) |
EP 0 440 437 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
06.11.1991 Bulletin 1991/45 |
| (43) |
Date of publication A2: |
|
07.08.1991 Bulletin 1991/32 |
| (22) |
Date of filing: 30.01.1991 |
|
| (51) |
International Patent Classification (IPC)5: C23C 4/06 |
|
| (84) |
Designated Contracting States: |
|
DE GB |
| (30) |
Priority: |
30.01.1990 JP 17933/90
|
| (71) |
Applicants: |
|
- NIPPON STEEL CORPORATION
Tokyo 100 (JP)
- SHOWA DENKO KABUSHIKI KAISHA
Minato-ku, Tokyo (JP)
|
|
| (72) |
Inventors: |
|
- Iwasaki, Yoshitaka,
c/o Nagoya Seitetsusho
Tokai-shi (JP)
- Oohori, Junji,
c/o Nagoya Seitetsusho
Tokai-shi (JP)
- Sato, Nobuharu,
c/o Nagoya Seitetsusho
Tokai-shi (JP)
- Kawamura, Nobuhiko,
c/o Chichibu Kojo
Chichibu-shi (JP)
- Kiyoshi, Koji,
c/o Chichibu Kojo
Chichibu-shi (JP)
|
| (74) |
Representative: Darby, David Thomas et al |
|
Abel & Imray
Northumberland House
303-306 High Holborn
London WC1V 7LH
London WC1V 7LH (GB) |
|
| |
|
| (54) |
Thermal spray material and its coated article excellent in high-temperature wear resistance
and build-up resistance |
(57) A thermal spray material used to coat the roll surface which is used to carry high-temperature
heat treating material within a continuous heat-treating furnace. The thermal spray
material is a composite powder or a blended powder consisting of alloy particles and
5 to 50 vol. % of metal boride particles. The alloy particle contains 5 to 40 wt.
% of Cr and 5 to 20 wt. % of Al, and the balance of at least one of Ni, Co and Fe.