Fused silicide coatings containing discrete particles for protec

Details Fused silicide coatings containing discrete particles for protec Fused silicide coatings containing discrete particles for protec

1973-05-04

1976-01-06

Martin, William D.

Stock material or miscellaneous articles

Composite

Of silicon containing

29195A, 427203, 427204, 427205, 427270, 427275, 427287, 428457, 428469, 428539, B32B 906, B32B 1504

Patent

active

039314472

ABSTRACT:
Fused silicide coatings for protecting niobium alloy substrates are modified by providing dispersed nucleation sites in the form of discrete particles in the coating. The discrete particles have a thermal expansion coefficient lower than that of the fused silicide material. This alters the microstructure and reduces the thermal expansion coefficient of the coating so as to minimize the number of tensile cracks.

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patent: 3442720 (1969-05-01), Bradley et al.
patent: 3502493 (1970-03-01), Forestek
patent: 3503791 (1970-03-01), Armand et al.
patent: 3734769 (1973-05-01), Hirschfeld
patent: 3759727 (1973-09-01), Dietz et al.
patent: 3761372 (1973-09-01), Sastri
patent: 3765953 (1973-10-01), Chevillon et al.
patent: 3770487 (1973-11-01), Gibson et al.
patent: 3775164 (1973-11-01), Smith et al.
patent: 3801363 (1974-04-01), Buck

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