Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1987-07-07
1990-01-23
Seidel, Richard K.
Metal founding
Process
Shaping liquid metal against a forming surface
1641221, 1641222, 75 82, 291568H, 291568P, B22D 100
Patent
active
048952010
ABSTRACT:
According to this invention, the oxidation resistance of alumina scale forming nickel based superalloys is significantly improved by controlling the level of sulfur in the alloy composition. According to one preferred embodiment of the invention, the superalloys contain less than 5 parts per million, by weight, of sulfur. Most preferably, they contain less than 2 parts per million, by weight, of sulfur.
REFERENCES:
patent: 2406582 (1946-08-01), Bieber et al.
patent: 3211549 (1965-10-01), Kusaka
patent: 3218156 (1965-11-01), Van der Sluis et al.
patent: 3784374 (1974-01-01), Almand
patent: 3795505 (1974-03-01), Corradini
patent: 3816103 (1974-06-01), Link, Jr. et al.
patent: 3853540 (1974-12-01), Schlatter et al.
patent: 3869282 (1975-03-01), Curran et al.
patent: 4018597 (1977-04-01), Staggers
patent: 4049470 (1977-09-01), Burton
patent: 4084960 (1978-04-01), Kay et al.
patent: 4161400 (1979-07-01), Wilson et al.
patent: 4385934 (1983-05-01), McGurty
patent: 4397683 (1983-08-01), Kay et al.
patent: 4484946 (1984-11-01), Ototani
patent: 4507149 (1985-03-01), Kay et al.
patent: 4530720 (1985-07-01), Moroishi et al.
patent: 4542116 (1985-09-01), Bertolacini et al.
patent: 4578113 (1986-03-01), Rana et al.
patent: 4721540 (1988-01-01), Harris et al.
Paul D. Merica et al., "The Malleability of Nickel", Transactions of the AIME, vol. 71, 1925, pp. 709-719.
Richard S. Cremisio et al., "Sulfur--Its Effects, Removal or Modification in Vacuum Melting", Third International Symposium on Electroslag and Other Special Melting Technology, Jun. 1971, Symposium Proceedings Part I, pp. 1-30.
D. P. Whittle et al., "Improvement in Properties: Additives in Oxidation Resistance", Philosophical Transactions of the Royal Society of London, Series A., vol. 295 (1980), pp. 309-329.
Y. Ikeda et al., "High Temperature Oxidation and Surface Segregation of Sulfur", Proceedings of the Third Japan Inst. of Metals, vol. 24, 1983, pp. 207-214.
R. A. Mulford, "Grain Boundary Segregation in Ni and Binary Ni Alloys Doped with Sulfur", Metallurgical Transactions A, vol. 14A, May 1983, pp. 865-870.
A. W. Funkenbusch et al., "Reactive Element--Sulfur Interaction and Oxide Scale Adherence", Metallurgical Transactions A, vol. 16A, Jun. 1985, pp. 1164-1166.
J. G. Smeggil et al., "The Use of Ion Implantation Techniques to Study Protective Oxide Scale Adherence Effects", J. Vac. Sci. Technol. A, vol. 3, No. 6, Nov/Dec 1985, pp. 2569-2573.
J. G. Smeggil et al., "A Relationship Between Indigenous Impurity Elements and Protective Oxide Scale Adherence Characteristics", Metallurgical Transactions A, vol. 17A, Jun. 1986, pp. 923-932.
J. G. Smeggil, A. W. Funkenbusch, "A Study of Adherent Oxide Scales", May 1985, pp. 1, 8-11.
A. W. Funkenbusch, J. G. Smeggil, "A Study of Adherent Oxide Formation", Oct. 1983, pp. 13-18.
Bornstein Norman S.
DeCrescente Michael A.
Smeggil John G.
Rashid James M.
Seidel Richard K.
United Technologies Corporation
LandOfFree
Oxidation resistant superalloys containing low sulfur levels does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oxidation resistant superalloys containing low sulfur levels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxidation resistant superalloys containing low sulfur levels will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-641022