缓冲层化学成分对钎焊连接强度的影响

Effect of Chemical Composition and Thickness of Buffer on Brazing Joint Strength

摘要: 在ZrO₂与40Cr钢之间分别加入缓冲层Ni、4J33、Ti和Cu进行钎焊连接。结果发现:缓冲层4J33和纯Ni的化学元素会破坏钎料对陶瓷的浸润性,从而影响了钎料与ZrO₂的界面反应,导致ZrO₂/40Cr钢连接失败。而缓冲层Cu和Ti不会影响钎料对陶瓷的浸润性,又能释放接头的残余应力,可提高ZrO₂/40Cr钢接头强度。

Abstract: ZrO₂ and 40Cr steel were brazed by insertting buffer Ni、4J33、Ti and Cu separately. The chemical composition of 4J33 and Ni would damage the wetting property of the brazing alloy to ceramic, and affect the interface reaction between the active solder and ZrO₂, so ZrO₂/40Cr steel can not be bonded. Cu and Ti would not affect the wetting ability of Ag₆₆Cu₃₀Ti₄, and release the residual stress, so the high joining strength can be obtained.