Metal fusion bonding – Process – Metal to nonmetal with separate metallic filler
Reexamination Certificate
2006-06-06
2006-06-06
Johnson, Jonathan (Department: 1725)
Metal fusion bonding
Process
Metal to nonmetal with separate metallic filler
C228S248100
Reexamination Certificate
active
07055733
ABSTRACT:
A method of joining metal and ceramic parts, wherein an alumina forming metal part and a ceramic part are provided. A braze material in placed between the alumina forming metal part and the ceramic part, and the combination is then heated in an oxidizing atmosphere, preferably in air at a temperature of between 500° C. and 1300° C. The alumina forming metal parts are selected from the group consisting of high temperature stainless steels, such as Durafoil (alpha-4), Fecralloy, Alumina-coated 430 stainless steel and Crofer-22APU, and high temperature superalloys such as Haynes 214, Nicrofer 6025, and Ducraloy. The braze material is selected as a metal oxide-noble metal mixture, preferably Ag—CuO, Ag—V2O5, and Pt—Nb2O5, and more preferably between 30.65 to 100 mole % Ag in CuO.
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Hardy John S.
Kim Jin Yong
Weil K. Scott
Battelle (Memorial Institute)
Johnson Jonathan
McKinley, Jr. Douglas E.
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