Coating material having corrosion resistance and wear resistance
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United States of America Patent
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-
Feb 6, 2007
Grant Date -
Oct 30, 2003
app pub date -
Feb 25, 2003
filing date -
Feb 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coating material has a first layer deposited on a base material and a second layer deposited on the first layer. The first layer is made of a Ni-base alloy or a Co-base alloy containing carbon as an unavoidable impurity. The second layer is made of a hard material containing carbide and a metal component. The first layer serves as a barrier for preventing carbon from being diffused from the second layer into the base material to prevent the base material from being carburized.
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