Jr. Murray S. (Cincinnati OH) Perkins Roger J. (Evendale OH) Fryxell Robert E. (Cincinnati OH) Young William R. (Cincinnati OH)
출원인 / 주소
General Electric Company (Cincinnati OH 02)
인용정보
피인용 횟수 :
22인용 특허 :
8
초록▼
A powder mixture for use in a method of repairing a superalloy article includes first and second Ni base superalloy powders. The first powder, characterized by superior hot corrosive resistance along with good oxidation resistance and the substantial absence of melting point depressants selected fro
A powder mixture for use in a method of repairing a superalloy article includes first and second Ni base superalloy powders. The first powder, characterized by superior hot corrosive resistance along with good oxidation resistance and the substantial absence of melting point depressants selected from Si and B greater than normal impurity levels, is included in the range of 30-70 wt % of the mixture. The second powder has a composition substantially within the same composition range as that of the first powder with the inclusion, by wt, of 0.5-5% B and up to 6% Si.
대표청구항▼
A mixture of a Ni base superalloy first powder and a Ni base superalloy second powder, the combination defining a homogenous powder system; the first powder characterized by superior hot corrosion resistance along with good oxidation resistance and mechanical properties, and the substantial absence
A mixture of a Ni base superalloy first powder and a Ni base superalloy second powder, the combination defining a homogenous powder system; the first powder characterized by superior hot corrosion resistance along with good oxidation resistance and mechanical properties, and the substantial absence of melting point depressant elements selected from the group consisting of Si and B in amounts greater than 1 wt % Si and 0.05 wt % B; the first powder consisting essentially of, by weight, 0.01-0.2% C, 16-23% Cr, 2-10% Mo, 15-21% Fe, up to 6% of the sum of Cb and Ta, up to 2% Ti, less than 2% Al, less than 3% Co, up to 2% W, with the balance Ni and incidental impurities; and the second powder having a composition which includes all of the elements of the first powder each, except for elements selected from the group consisting of Si and B, within the respective percentage range of that of the first powder, the second powder consisting essentially of, by weight, 0.01-0.2% C, 16-23% Cr, 2-10% Mo, 15-21% Fe, up to 6% of the sum of Cb and Ta, up to 2% Ti, less than 2% Al, less than 3% Co, up to 2% W, 0.5-5% B, up to 6% Si, with the balance Ni and incidental impurities, and having a melting temperature lower than that of the first powder; the mixture consisting essentially of, by weight, 30-70% of the firt powder and 30-70% of the second powder.
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이 특허에 인용된 특허 (8)
Baladjanian Gregor (Malibu CA) Rothman Robert L. (San Pedro CA), High temperature braze repair of superalloys.
Duvall David S. (Cobalt CT) Owczarski William A. (Cheshire CT) Paulonis Daniel F. (Moodus CT) Schaefer Robert P. (East Hartford CT), Method of repairing surface defects using metallic filler material.
Lee Jack W. (Brookfield CT) Miller Jule A. (Derby CT), High temperature metal alloy mixtures for filling holes and repairing damages in superalloy bodies.
Kernan,Brian D.; Sachs,Emanuel M.; Allen,Samuel M.; Lorenz,Adam M., Infiltrating a powder metal skeleton by a similar alloy with depressed melting point exploiting a persistent liquid phase at equilibrium, suitable for fabricating steel parts.
Lorenz, Adam M.; Sachs, Emanuel M.; Allen, Samuel M., Techniques for infiltration of a powder metal skeleton by a similar alloy with melting point depressed.
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