Abrasion resistant copper alloy, copper alloy powder for build-up cladding, and engine cylinder head
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United States of America Patent
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Mar 11, 2003
Issued Date -
N/A
app pub date -
Feb 22, 1999
filing date -
Feb 26, 1998
priority date (Note) -
Expired
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Abstract
A valve seat (2) is formed by build-up cladding by irradiating a laser beam on a copper alloy powder (4) provided in the rim of a port (3) formed in an engine cylinder head (1). The copper alloy powder (4) consists of copper (Cu), 6-9 wt % nickel (Ni), 1-5 wt % silicon (Si), and 1-5 wt % of one of molybdenum (Mo), tungsten (W), tantalum (Ta), niobium (Nb) and vanadium (V). Due to this composition, the valve seat (2) has few microcracks and excellent abrasion resistance.
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