Alloys or metallic compositions – Niobium base – Titanium – zirconium – or hafnium containing
Reexamination Certificate
2006-03-28
2009-10-06
King, Roy (Department: 1793)
Alloys or metallic compositions
Niobium base
Titanium, zirconium, or hafnium containing
C420S425000, C420S900000
Reexamination Certificate
active
07597842
ABSTRACT:
An Nb—Ti—Co alloy having both good hydrogen permeability and good hydrogen embrittlement resistance comprises one of Fe, Cu or Mn as a fourth element, incorporating from 1 to 14 mol %. The content of Mn, if any, is preferably from 1 to 9 mol %. The desired hydrogen permeability can be attained by the (Nb, Ti) phase and the desired hydrogen embrittlement resistance can be attained by the CoTi phase, making is possible to obtain excellent hydrogen permeability and excellent hydrogen embrittlement resistance. None of Fe, Cu or Mn can impair these properties. Fe, Cu or Mn can replace some of the Co elements. Fe, Cu or Mn enhances the workability of the alloy.
REFERENCES:
patent: 6258184 (2001-07-01), Iba et al.
patent: 2004/0129135 (2004-07-01), Roark et al.
patent: 11-276866 (1999-10-01), None
patent: 2000-159503 (2000-06-01), None
patent: 2004-42017 (2004-02-01), None
Aoki Kiyoshi
Ishikawa Kazuhiro
Kabutomori Toshiki
Sasaki Tsuyoshi
Fogarty Caitlin
King Roy
National University Corporation Kitami Institute of Technology
Sughrue & Mion, PLLC
The Japan Steel Works Ltd.
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