Porous high temperature seal abradable member

Details Porous high temperature seal abradable member Porous high temperature seal abradable member

1975-08-22

1976-06-22

Padgett, Benjamin R.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

75126G, 75126H, 75128R, 75128B, 75128G, 75171, 75222, 415174, C22C 104

Patent

active

039648770

ABSTRACT:
A seal member is provided with an improved combination of oxidation resistance, fluid erosion resistance, reduced thermal conductivity and low flow stress at elevated temperatures through a plurality of metallurgically bonded metal alloy powder particles in the size range substantially of about +140 to about -270 ASTM (U.S. Standard Sieve) the metal particles being metallographically distinguishable and consisting essentially of, by weight, 15 - 35% Cr, about 8 to 20% Al, up to 5% of elements selected from Y, Hf and the rare earth elements, with the balance selected from Fe, Co and Ni, the member having a density in the range of about 65 - 90% of theoretical density.

REFERENCES:
patent: 3027252 (1962-03-01), McGurty et al.
patent: 3068016 (1962-12-01), Dega
patent: 3342563 (1967-09-01), Butts
patent: 3540862 (1970-11-01), Roemer
patent: 3542530 (1970-11-01), Talboom, Jr. et al.
patent: 3676085 (1972-07-01), Evans et al.
patent: 3754902 (1973-08-01), Boone et al.
patent: 3754903 (1973-08-01), Goward et al.
patent: 3807993 (1974-04-01), Dalai et al.
patent: 3817719 (1974-06-01), Schilke et al.
patent: 3832167 (1974-08-01), Kershaw

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