Ni-base alloy anticorrosion plate excellent in high temperature corrosion resistance and exhaust valve for diesel engine joined with the anticorrosion plate

摘要

PROBLEM TO BE SOLVED: To provide a Ni-based alloy corrosionproof plate excellent in high-temperature corrosion resistance, and an exhaust valve for diesel engines with the corrosionproof plate joined thereon.SOLUTION: There are provided a Ni-based alloy corrosionproof plate excellent in high-temperature corrosion resistance containing, by wt.%, Cr:over 43% to 50% or less, Mo:0.1 to 2.0%, Fe:0.05 to 1%, Mn:0.05 to 0.5%, Si:0.01 to 0.1%, V:0.001 to 0.08%, B:0.0001 to 0.01%, Mg:0.001 to 0.02%, further if needed, Al:0.005 to 0.3%, Ti:0.0005 to 0.03% and the balance Ni with inevitable impurities, and an exhaust valve for diesel engines manufactured by brazing the same on a contact fire surface.