Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1980-06-20
1982-09-21
Bell, Mark
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75 05C, 75200, 75211, 75224, 75251, B22F 300
Patent
active
043505295
ABSTRACT:
A process is disclosed for improving the corrosion resistance of stainless steel powders produced by atomization in an oxidizing atmosphere whereby silicon present in the powder tends to form silicon oxides on the powder surface. The process comprises adding an effective proportion of a modifier metal selected from the group consisting of antimony, arsenic, and bismuth to the melt prior to atomization. The modifier metal addition is effective for decreasing the surface silicon oxides and thereby improves the corrosion resistance.
REFERENCES:
patent: 2956304 (1960-10-01), Batten et al.
patent: 3243288 (1966-03-01), Feldmann et al.
patent: 4154608 (1979-05-01), Carey et al.
patent: 4240831 (1980-12-01), Ro et al.
Kalish et al; "An Evaluation of Dissociated Ammonia and Hydrogen Atmospheres for Sintering Stainless Steel", Journal of Metals, TRANS. AIME., Feb. 1955, pp. 304-310.
Stosuy et al; Metal Progress vol. 91, pp. 81-85, 1967.
Jones; "The Effect of Processing Variables on the Properties of Type 316L Powder Compacts", Progress in Powder Metallurgy, vol. 30, pp. 25-50, Apr. 1974.
Sands et al; "The Corrosion Resistance of Sintered Austenitic Stainless Steel", Modern Developments in Powder Metallurgy, H. H. Hausen, ed., Plenum Press, N.Y., pp. 73-83, 1966.
Klar Erhard
Ro David H.
Whitman Charles I.
Bell Mark
Douthitt Merton H.
SCM Corporation
Sturges Robert A.
LandOfFree
Corrosion-resistant powder-metallurgy stainless steel powders an does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Corrosion-resistant powder-metallurgy stainless steel powders an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Corrosion-resistant powder-metallurgy stainless steel powders an will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2074816