Tappet in an internal combustion engine
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United States of America Patent
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Mar 1, 1994
Grant Date -
N/A
app pub date -
Mar 25, 1993
filing date -
Mar 25, 1993
priority date (Note) -
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Abstract
A tappet for use in an internal combustion engine comprises Al-alloy base material and a sprayed layer on the outer surface which is slidable with a cylinder head. The sprayed layer is made of Fe-alloy which comprises not more than 0.1% by weight of C, 0.6-2.0% by weight of Mn and the balance of Fe, thereby providing high hardness, high toughness and low cost. The sprayed layer may further contain 0.1-1.0% by weight of Si.
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