Engine parts

Details Engine parts Engine parts

1984-04-04

1985-10-01

Bell, Mark L.

Stock material or miscellaneous articles

Composite

Of metal

501103, C04B 3548, B32B 1504

Patent

active

045446075

ABSTRACT:
This invention relates to engine parts having high durability, which can be used at high operating temperatures. The engine parts comprise component members consisting mainly of the partially stabilized zirconia having high strength which is excellent in thermal insulation and mechanical strength. As the partially stabilized zirconia having high strength, use is made of ones in which thermal expansion hysteresis (difference of thermal expansion at an optional temperature in the thermal expansion during heating up and the thermal shrinkage during cooling down) is less than 0.4% and thermal expansion coefficient is more than 10.times.10.sup.-6 /.degree.C. The preferable engine parts having higher durability and reliability comprise component members consisting of a ceramic-metal composite body wherein the partially stabilized zirconia having a difference of thermal expansion coefficient being less than 3.times.10.sup.-6 /.degree.C. and a metal are bonded.

REFERENCES:
patent: 4360598 (1982-11-01), Otagiri et al.
SAE Technical Paper Series 820429, "Ceramics for Adiabatic Engine Components", M. E. Woods et al.

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