Mo.sub.5 Si.sub.3 C ceramic material and glow plug heating eleme

Details Mo.sub.5 Si.sub.3 C ceramic material and glow plug heating eleme Mo.sub.5 Si.sub.3 C ceramic material and glow plug heating eleme

1989-03-28

1992-02-04

Bartis, Anthony

Electric heating

Heating devices

Resistive element: igniter type

123145A, 219553, 252513, 252516, 361266, C04B 3558, H05B 310, F02P 1902

Patent

active

050862103

ABSTRACT:
An electrically conductive ceramic material containing at least 20 wt % of Mo.sub.5 Si.sub.3 C and having a resistance-temperature coefficient no greater than 5.times.10.sup.-4 deg.sup.-1 is used to make the heating element of a self-controlling type glow plug having a resistor with a larger temperature-resistance coefficient, such as iron or nickel, connected in series to the heating element for controlling the supply of electric current to the heating element. The ceramic material is made by firing a ceramic powder mixture of Mo and Si mixed with carbon black.

REFERENCES:
patent: 4613455 (1986-09-01), Suzuki et al.
patent: 4634837 (1987-01-01), Ito et al.
Proceedings of the 10th Plansee-Seminar 1981, vol. 1, Ed. H. M. Ortner, Metallwerk Plansee, Reutte, Austria, Van Loo et al., "Phase Relations and Diffusion Paths in the Mo-Si-C System at 1200.degree. C.", p. 146, Table I; FIG. 3.

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