Effects of the joining process on the microstructure and properties of liquid-phase-sintered SiC-SiC joints formed with Ti foil
Effects of the joining process on the microstructure and properties of liquid-phase-sintered SiC-SiC joints formed with Ti foil
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DOI：
10.1016/j.jeurceramsoc.2020.07.072
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发表时间：
2021
影响因子：
5.7
通讯作者：
Li-xiang Wu;Lin-lin Zhu;Wei‐Ming Guo;Shikuan Sun;Wen-Bin Niu;Jiaxiang Xue;Jiangtao Zhai;Hai-Bin Ma;Rui-Lin Lin-Rui-Lin-Lin-2036601997;Hua-Tay Lin;K. Plucknett;Y. Liao;Tong Liu;Q. Ren
中科院分区：
文献类型：
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作者：
Li-xiang Wu;Lin-lin Zhu;Wei‐Ming Guo;Shikuan Sun;Wen-Bin Niu;Jiaxiang Xue;Jiangtao Zhai;Hai-Bin Ma;Rui-Lin Lin-Rui-Lin-Lin-2036601997;Hua-Tay Lin;K. Plucknett;Y. Liao;Tong Liu;Q. Ren
采用放电等离子烧结（SPS）技术，以Ti金属箔为连接中间层，通过固态扩散连接实现了液相烧结SiC（LPS-SiC）陶瓷的连接。在1400 °C下，在10或30 MPa的施加压力下，并且在不同的气氛（氩气、Ar相对于真空）下接合样品。结果表明，接头的剪切强度随着施加的连接压力的增加而增加。连接气氛对SiC接头的显微结构和剪切强度也有影响。对中间层的成分和微观结构进行了分析，以了解其机理。结果表明，在Ar气氛下实现了SiC-SiC陶瓷的良好连接，为复杂形状SiC陶瓷构件的应用提供了一种经济有效的连接方法。
The joining of liquid-phase sintered SiC (LPS-SiC) ceramics was conducted using spark plasma sintering (SPS), through solid state diffusion bonding, with Ti-metal foil as a joining interlayer. Samples were joined at 1400 °C, under applied pressures of either 10 or 30 MPa, and with different atmospheres (argon, Ar, vs. vacuum). It was demonstrated that the shear strength of the joints increased with an increase in the applied joining pressure. The joining atmosphere also affected on both the microstructure and shear strength of the SiC joints. The composition and microstructure of the interlayer were examined to understand the mechanism. As a result, a SiC-SiC joining with a good mechanical performance could be achieved under an Ar environment, which in turn could provide a cost-effective approach and greatly widen the applications of SiC ceramic components with complex shape.