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Title:
TURBINE BLADE AND TURBINE POWER GENERATING EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2002/101204
Kind Code:
A1
Abstract:
A turbine blade (4) of a steam turbine, wherein the fluid contact portion thereof comprises a Co based alloy (5) having a spherical or granular eutectic carbide and a liquid phase diffusion bonded part (6) formed by liquid phase diffusion bonding of the turbine blade (4) with the Co based alloy (5), whereby, because the advancement of corrosion of the eutectic carbide is suppressed halfway by the discontinuous distribution of the eutectic carbide even if a drive fluid comes in contact with the turbine blade though the corrosion of the eutectic carbide is advanced, the durability of the turbine blade of the steam turbine at the fluid contact part can be increased.

Inventors:
Shinohara, Hiroyuki (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Kiyotoki, Yoshihisa (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Kumagai, Shin (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Chiba, Yoshiteru (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Sakamoto, Akira (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Ogawa, Yasuhiro (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Application Number:
PCT/JP2001/004892
Publication Date:
December 19, 2002
Filing Date:
June 11, 2001
Export Citation:
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Assignee:
HITACHI, LTD. (6 Kanda Surugadai 4-chome, Chiyoda-ku, Tokyo, 101-8010, JP)
Shinohara, Hiroyuki (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Kiyotoki, Yoshihisa (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Kumagai, Shin (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Chiba, Yoshiteru (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Sakamoto, Akira (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
Ogawa, Yasuhiro (Nuclear Systems Division, Hitachi Ltd., 1-1, Saiwaicho 3-chom, Hitachi-shi Ibaraki, 317-0073, JP)
International Classes:
C22C38/40; C22C38/44; C22C38/58; C23C26/02; F01D5/28; (IPC1-7): F01D5/28; C22C19/00; C22C32/00; C22C38/00
Attorney, Agent or Firm:
Sakuta, Yasuo (Hitachi Ltd, 5-1 Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8220, JP)
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