Combination thermal barrier and wear coating for internal combus

Details Combination thermal barrier and wear coating for internal combus Combination thermal barrier and wear coating for internal combus

1992-09-22

1995-05-09

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of inorganic material

428457, 428699, 428701, 428702, 384907, 3849071, 384913, B32B 900

Patent

active

054138779

ABSTRACT:
A thermal barrier and wear coating having high strength, low conductivity, a low thermal expansion coefficient and good adhesion qualities, where the wear coating is self-lubricating and has high temperature resistance, a hard wear resistant matrix, a low coefficient of friction and is easy to machine to a smooth surface. The thermal barrier is applied to the internal engine cylinder surface to reduce the heat rejection and thus reduce the need for air or liquid cooling. The self-lubricating wear coating is applied over the thermal barrier to prevent contact between the moving engine parts and the thermal barrier. The wear coating has a low friction coefficient so that it does not generate substantial additional heat and is self-lubricating to withstand temperatures up to 900.degree. C.

REFERENCES:
patent: 5139876 (1992-08-01), Graham
patent: 5164266 (1992-11-01), Kita

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