Microstructural and mechanical characterization of the Si3N4/Si3N4 joint brazed using Au–Ni–V filler alloys
Microstructural and mechanical characterization of the Si3N4/Si3N4 joint brazed using Au–Ni–V filler alloys
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DOI：
10.1016/j.jeurceramsoc.2009.08.015
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发表时间：
2010-02
影响因子：
5.7
通讯作者：
Jin Zhang;Yangshan Sun
中科院分区：
文献类型：
--
作者：
Jin Zhang;Yangshan Sun
本文采用两种Au-Ni-V钎料对箔状Si 3 N4陶瓷进行钎焊。研究了钎焊温度和钎料中V含量对接头组织和连接强度的影响。结果表明，在Si 3 N4基体与钎料的界面处形成了厚度约为4μm的VN反应层。随钎焊温度的升高或V含量的增加，VN反应层厚度增加。采用Au58.7Ni36.5V4.8钎料，在1423 K下钎焊30 min，接头抗弯强度达到最大值242 MPa。结合所发现的相和钎焊工艺参数，讨论了连接机理。
In this study, two Au–Ni–V filler metals were used to braze Si3N4ceramic in the form of foils. The effects of brazing temperature and V content in the filler alloy on microstructure and bonding strength of the joint were studied. The results reveal that a VN reaction layer with a thickness about 4μm was formed at the interface between Si3N4substrate and filler alloy. With increasing brazing temperature or V content the thickness of VN reaction layer increased. A maximum joint bending strength of 242MPa was achieved when the joint was brazed at the temperature of 1423K for 30min using Au58.7Ni36.5V4.8 filler alloy. The bonding mechanism was discussed with reference to the discovered phases and brazing parameters.