High-toughness 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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Abstract
A surface hardening material being excellent in impact resistance and having abrasion resistance is provided. Provided are: a high-toughness cobalt-based alloy containing 25.0 to 40.0 mass % of Cr, 0.5 to 12.0 mass % of a sum of W and/or Mo, 0.8 to 5.5 mass % of Si, and 0.5 to 2.5 mass % of B, 8.0 mass % or less of each of Fe, Ni, Mn, and Cu, and 0.3 mass % or less of C, the sum amount of Fe, Ni, Mn, and C being 10.0 mass % or less, and the remainder comprising 48.0 to 68.0 mass % of Co and unavoidable impurities; and an engine valve coated with the same.
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International Classification(s)
- C23C:COATING METALLIC MATERIAL; COATING MATERIAL WITH M....
- F01L:CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINE....
- B23K:SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLA....
- B22F:WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES F....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
- C22C:ALLOYS
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