Ceramic electrical resistance igniter

Details Ceramic electrical resistance igniter Ceramic electrical resistance igniter

1974-05-22

1976-08-10

Padgett, Benjamin R.

Compositions

Electrically conductive or emissive compositions

Carbide containing

106 44, H01B 104

Patent

active

039741060

ABSTRACT:
A ceramic resistance gas igniter comprised of 10 to 60% by weight of silicon carbide and 40 to 90% by weight of silicon nitride, slicon oxynitride, or silicon aluminum oxynitride, and having a density preferably greater than 95% of the theoretical density of the composite. As a result of the combination of high density and composition, the igniters have moduli of rupture in excess of 80,000 p.s.i., a resistivity range of from 0.1 to 10.sup.4 ohm centimeters, and superior resistance to corrosive gases.

REFERENCES:
patent: 2095253 (1937-10-01), Heyroth
patent: 3052814 (1962-09-01), Edwards et al.
patent: 3454345 (1969-07-01), Dyre
patent: 3890250 (1975-06-01), Richerson
patent: 3895219 (1975-07-01), Richerson et al.
Chemical Abstracts, vol. 75 (1971), 9395 p. "Sintering Conditions of High-Temperature Materials Based on Silicon Nitride and Carbide."
Chemical Abstracts, Vol. 79 (1973), 45098k, "Refractory Material."

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