Anodized magnesium or magnesium alloy piston and method for manufacturing the same
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United States of America Patent
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Dec 17, 2002
Grant Date -
N/A
app pub date -
Oct 4, 2001
filing date -
Oct 4, 2001
priority date (Note) -
Expired
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Abstract
An anodized magnesium piston including a head and skirt for an internal combustion engine. The piston includes a non-fiber-reinforced, magnesium-based alloy including up to 2.5 percent by weight rare earth metals. The piston further includes an external surface, at least a portion of which has a base layer of magnesium fluoride, magnesium oxofluoride, magnesium oxide or a mixture thereof electrochemically anodized thereto.
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