Engine component part and method for producing the same

Internal-combustion engines – Valve – Wear feature

Reexamination Certificate

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C123S193600, C123S193500

Reexamination Certificate

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07412955

ABSTRACT:
An engine component is composed of an aluminum alloy containing silicon, and includes a plurality of primary-crystal silicon grains located on a slide surface. The plurality of primary-crystal silicon grains have an average crystal grain size of no less than about 12 μm and no more than about 50 μm.

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