CLAD BRAZING FILLER METAL FOR JOINING CERAMICS AND METAL OR THE LIKE AND COMPOSITE BODY COMPOSED OF CERAMICS AND METAL OR THE LIKE USING SAID BRAZING FILLER METAL

摘要

PURPOSE:To provide a titled brazing filler metal which can join materials having considerably different coeffts. of thermal expansion with a simple heating operation by uniting adjacently an Ag layer, Cu layer, Ag-Cu alloy layer, Ag layer and Cu layer, etc. and Ti layer to one body and specifying the content of Ti. CONSTITUTION:A brazing filler metal consists of an Ag layer, Cu layer or Ag-Cu alloy layer or an Ag layer and Cu layer and a Ti layer adjacent thereto and contains the Ti specified to 3-80wt% by th total weight of said layers and is used for joining ceramics and a metal, etc. by heating in a non-oxidizing atmosphere, by which the composite body composed thereof can be formed. One or both of a metal layer having a low coefft. of expansion such as W, ''Kovar'' or the like and a metal layer having a low Young's modulus such as Cu, Ag or the like are adjacently united to the above-mentioned brazing filler metal layer and the metal is used as a clad brazing filler metal for joining, then the residual stress or strain to be applied on the composite material obtd. by joining with said material and cooling is decreased.