Wear-resistant cobalt-based alloy and engine valve coated with same
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United States of America Patent
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Dec 8, 2015
Issued Date -
N/A
app pub date -
May 23, 2011
filing date -
Nov 9, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A surface hardening material being excellent in abrasion resistance and having impact resistance is provided. Provided are: a wear-resistant cobalt-based alloy containing 20.0 to 30.0 mass % of a sum of Mo and/or W, 0.8 to 2.2 mass % of B, 5.0 to 18.0 mass % of Cr, 5.0 mass % or less of a sum of Fe, Ni, Mn, Cu, Si and C, 1.0 mass % or less of Si, and 0.3 mass % or less of C, and the remainder comprising 55.0 to 70.0 mass % of Co and unavoidable impurities; and an engine valve coated with the same.
First Claim
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International Classification(s)
- C23C:COATING METALLIC MATERIAL; COATING MATERIAL WITH M....
- F16K:VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR....
- F01L:CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINE....
- B23K:SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLA....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- C22F:CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS MET....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
- C22C:ALLOYS
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