Porous high temperature seal abradable member

Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator

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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.

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patent: 3832167 (1974-08-01), Kershaw

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