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Title:
TITANIUM COMPOSITE MATERIAL, AND TITANIUM MATERIAL FOR HOT ROLLING
Document Type and Number:
WIPO Patent Application WO/2017/018514
Kind Code:
A1
Abstract:
Provided is a titanium composite material 1 that has: an inner layer 5 made from an 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 has a chemical composition that is different from that of the inner layer 5; and intermediate layer that is formed between the inner layer 5 and the surface layer 3 and has a chemical composition that is different from that of the inner layer 5, wherein the thickness of the surface layer 3 is at least 2 μm and accounts for at most 40%, per side, of the total thickness, and the thickness of the intermediate layer is at least 0.5 μm. The chemical composition of the surface layer 3, by mass%, is 0-1.5% Sn, 0-1.5% Cu, 0-0.5% Fe, and at least one of 0.1-0.6% Si, 0.1-2.0% Nb, 0.3-1.0% Ta, and 0.3-1.5% Al, wherein the remainder is titanium and impurities. The titanium composite material has oxidation resistance despite being inexpensive.

Inventors:
KUNIEDA TOMONORI (JP)
MITSUDA KOJI (JP)
TATSUZAWA YOSHITSUGU (JP)
TAKAHASHI KAZUHIRO (JP)
FUJII HIDEKI (JP)
Application Number:
PCT/JP2016/072336
Publication Date:
February 02, 2017
Filing Date:
July 29, 2016
Export Citation:
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Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21B1/22; B21B3/00; C22C14/00; B23K15/00; B23K20/04; C22F1/00; C22F1/18
Domestic Patent References:
WO2014163086A12014-10-09
WO2014163087A12014-10-09
Foreign References:
JP2004056090A2004-02-19
JPH11179566A1999-07-06
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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