| 摘要 |
PURPOSE:To reduce a brazing stage and to improve brazing quality by incorporating specific wt% of Pd and prescribed % of at least one kind of Ti and Zr into a brazing filler metal and forming the balance of Cu thereby forming the brazing filler metal. CONSTITUTION:The brazing filler metal for ceramics is formed of the compsn. contg. 3-20% Pd and 1.5-19% at least one kind of Ti and Zr and the balance Cu. The Pd in the components has a high m.p. and contributes to the improvement of the high-temp. strength of the brazing filler metal and the improvement of wettability. The Cu component has the wettability and function to control the melting temp. and relieves the boundary stress after brazing. Since the respective characteristics of the Pd, Cu, Ti and Zr are effectively combined and used, the direct joining of the ceramics without metallized layer is executed. The brazing stage is thus reduced and the brazing quality such as wettability and high-temp. strength is improved.
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