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Title:
EROSION RESISTANT MACHINE COMPONENT, METHOD FOR FORMING SURFACE LAYER OF MACHINE COMPONENT, AND STEAM TURBINE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2011/013167
Kind Code:
A1
Abstract:
The surface layer formation method aims to form an outstanding erosion resistant film, and comprises a step in which a member (2) is placed inside a working fluid (3) and a step in which an Si electrode (1) is formed at a prescribed distance from the member (2), a prescribed voltage is applied to generate an electrical discharge so as to supply an Si component from the Si electrode (1) toward the member, and a Si-containing surface layer is formed. A discharge pulse, wherein the time integral value of the discharge pulse is in the range of 30 A·µs-80 A·µs, is generated repeatedly to form an iron-based metal structure with an Si content of 3-11 wt% and a thickness of 5-10 µm.

Inventors:
GOTO, Akihiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
後藤昭弘 (〒10 東京都千代田区丸の内二丁目7番3号三菱電機株式会社内 Tokyo, 〒1008310, JP)
SUMI, Nobuyuki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
鷲見信行 (〒10 東京都千代田区丸の内二丁目7番3号三菱電機株式会社内 Tokyo, 〒1008310, JP)
Application Number:
JP2009/003543
Publication Date:
February 03, 2011
Filing Date:
July 28, 2009
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目7番3号 Tokyo, 〒1008310, JP)
GOTO, Akihiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
後藤昭弘 (〒10 東京都千代田区丸の内二丁目7番3号三菱電機株式会社内 Tokyo, 〒1008310, JP)
SUMI, Nobuyuki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
International Classes:
C23C26/00; F01D5/28; F01D25/00
Attorney, Agent or Firm:
TAKAHASHI, Shogo et al. (7-3Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
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