Thermal shock and erosion resistant tantalum carbide ceramic mat

Details Thermal shock and erosion resistant tantalum carbide ceramic mat Thermal shock and erosion resistant tantalum carbide ceramic mat

1976-04-01

1978-01-10

McCarthy, Helen M.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

60200A, 75229, 75239, 75241, C04B 3552

Patent

active

040677427

ABSTRACT:
Ceramic tantalum carbide artifacts having high thermal shock and mechanical erosion resistance are provided by incorporating tungsten-rhenium and carbon particles in a tantalum carbide matrix. The mix is sintered by hot pressing to form the ceramic article which has a high fracture strength relative to its elastic modulus and thus has an improved thermal shock and mechanical erosion resistance. The tantalum carbide is preferable less than minus 100 mesh, the carbon particles are preferable less than minus 100 mesh, and the tungsten-rhenium particles are preferable elongate, having a length to thickness ratio of at least 2/1. Tungsten-rhenium wire pieces are suitable as well as graphite particles.

REFERENCES:
patent: 1936435 (1933-11-01), Kelley
patent: 2021576 (1935-11-01), McKenna
patent: 2039822 (1936-05-01), McKenna
patent: 3226929 (1966-01-01), McKenna
patent: 3379520 (1968-04-01), Chang et al.
patent: 3779716 (1973-12-01), Riley et al.

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