Spark plug insulator and a method of sintering

Details Spark plug insulator and a method of sintering Spark plug insulator and a method of sintering

1991-12-09

1994-02-01

Bell, Mark L.

Stock material or miscellaneous articles

Composite

Of inorganic material

501 98, 313143, 427226, 264 65, 264 66, B32B 900

Patent

active

052831345

ABSTRACT:
A spark plug insulator is desirably made up of a sintered body of AlN-based ceramic powder comprising about 60-98% AlN and a sintering additive. There is provided on the surface of the sintered body a layer of pyrolytic boron nitride having a thickness in the range 10-100 .mu.m.

REFERENCES:
patent: 4731303 (1988-03-01), Hirano et al.
patent: 4970095 (1990-11-01), Bolt et al.
patent: 4971779 (1990-11-01), Paine, Jr. et al.
patent: 5004708 (1991-04-01), Moore
patent: 5030598 (1991-07-01), Hsieh
patent: 5057465 (1991-10-01), Sakamoto et al.
patent: 5082710 (1992-01-01), Wright
"Preparational and Properties of Thin Film Boron Nitride" M. Rand cfd. J. Electrochem Soc. Apr. 1968.
Murray et al "Growth of Stoichiometric BN Films by Pulsed Laser Evaporation" MRS. Symp Proc vol. 128 1989.

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