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Title:
TITANIUM COMPOSITE MATERIAL AND TITANIUM MATERIAL FOR HOT WORKING
Document Type and Number:
WIPO Patent Application WO/2017/018520
Kind Code:
A1
Abstract:
A titanium composite material 1 is provided with: an inner layer 5 comprising industrial pure titanium or a titanium alloy; a surface layer 3 that is formed on at least one surface of the inner layer 5 and that has a different chemical composition than the inner layer 5; and an intermediate layer that is formed between the inner layer 5 and the surface layer 3 and that has a different chemical composition than the inner layer 5. The surface layer 3 has a thickness of 2 µm or more and the proportion of the total thickness of the titanium composite material occupied by one surface of said surface layer 3 is 40% or less. The thickness of the intermediate layer is 0.5 µm or more. The chemical composition of the surface layer 3 includes: 0.08-1.0% of one or more substances selected from among Fe, Cr, Ni, Al, and Zr; and a remainder of titanium and impurities. The titanium composite material has the desired properties despite being inexpensive.

Inventors:
KUNIEDA, Tomonori (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
MORI, Kenichi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
TAKAHASHI, Kazuhiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
FUJII, Hideki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
Application Number:
JP2016/072342
Publication Date:
February 02, 2017
Filing Date:
July 29, 2016
Export Citation:
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Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
International Classes:
B21B1/02; B21B3/00; B23K15/00; B23K20/04; C22C14/00; C22F1/00; C22F1/18
Domestic Patent References:
2014-10-09
Foreign References:
JP2001038413A2001-02-13
JPS50146557A1975-11-25
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (2-5-10, Sonezaki Kita-ku, Osaka-sh, Osaka 57, 〒5300057, JP)
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