Alloys or metallic compositions – Titanium base – Aluminum containing
Patent
1993-07-13
1995-09-19
Roy, Upendra
Alloys or metallic compositions
Titanium base
Aluminum containing
148269, 148421, 420421, C22C 1400
Patent
active
054513669
ABSTRACT:
A Ti--Al system intermetallic compound comprised of 25 at. % to 75 at. % of aluminum and the remainder of titanium. The compound includes 0.004 at. % to 1.0 at. % each of at least one halogen element selected from the group consisting of fluorine, chlorine, bromine and iodine. Alternatively, to provide a Ti--Al system intermetallic compound with oxidation resistance, the surface of the Ti--Al system intermetallic compound is heated to 800.degree. C. to 1125.degree. C. in a mixture of gas including 2 ppm to 1% by volume of at least one halogen element selected from the group consisting of fluorine, chlorine, bromine and iodine, and also including 0.1% by volume or more of oxygen. Thus, a dense aluminum oxide film is formed on the surface of the intermetallic compound. Alternatively, to form the dense aluminum oxide film, at least one halogen element is first disposed on the part providing the oxidation resistance of the intermetallic compound, and heated for 0.2 hour or longer at 800.degree. C. to 1125.degree. C. In this case, the halogen amount should be between 0.002 mol/m.sup.2 and 2 mol/m.sup.2.
REFERENCES:
patent: 4437888 (1984-03-01), Jecker
patent: 5120497 (1992-06-01), Sayashi et al.
Research Report of the 123rd Committee on Heat-resistant Material Journal of Japan Society for the Promotion of Science vol. 29 No. 1 (1988) pp. 77-87 authored by Tsurumi et al.
Minute of Autumn Conference of the Japan Institute of Metals Journal vol. 54 No. 8 (Aug. 1990) pp. 948-954 authored by Kasahara et al.
Minute of Autumn Conference of the Japan Institute of Metals Journal vol. 29 (Sep. 1990) p. 274 authored by Anada et al.
Minute of Autumn Conference of the Japan Institute of Metals Journal (1991) vol. 30 p. 561 authored by Anada et al.
Furuyama Tsutomu
Kim Mok-Soon
Kumagai Masaki
Shibue Kazuhisa
Roy Upendra
Sumitomo Light Metal Industries Ltd.
LandOfFree
Product of a halogen containing Ti-Al system intermetallic compo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Product of a halogen containing Ti-Al system intermetallic compo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Product of a halogen containing Ti-Al system intermetallic compo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1826513