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钎料中Ti元素含量对Si3N4/Si3N4接头界面结构及性能的影响

宋晓国, 赵一璇, 赫秋雨, 曹健, 雷玉珍, 冯吉才

宋晓国, 赵一璇, 赫秋雨, 曹健, 雷玉珍, 冯吉才. 钎料中Ti元素含量对Si3N4/Si3N4接头界面结构及性能的影响[J]. 焊接学报, 2017, 38(3): 5-8.
引用本文: 宋晓国, 赵一璇, 赫秋雨, 曹健, 雷玉珍, 冯吉才. 钎料中Ti元素含量对Si3N4/Si3N4接头界面结构及性能的影响[J]. 焊接学报, 2017, 38(3): 5-8.
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SONG Xiaoguo, ZHAO Yixuan, HE Qiuyu, CAO Jian, LEI Yuzhen, FENG Jicai. Effect of Ti content in composite filler on interfacial microstructure and joining property of Si3N4 brazed joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(3): 5-8.
Citation: SONG Xiaoguo, ZHAO Yixuan, HE Qiuyu, CAO Jian, LEI Yuzhen, FENG Jicai. Effect of Ti content in composite filler on interfacial microstructure and joining property of Si3N4 brazed joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(3): 5-8.
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钎料中Ti元素含量对Si3N4/Si3N4接头界面结构及性能的影响

  • 1.

    哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001

  • 2.

    哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001;哈尔滨工业大学(威海)山东省特种焊接重点实验室, 威海 264209

  • 3.

    哈尔滨工业大学(威海)山东省特种焊接重点实验室, 威海 264209

基金项目: 国家自然科学基金资助项目（51405099，51505105）；山东省优秀中青年科学家科研奖励基金（BS2013CL028）

Effect of Ti content in composite filler on interfacial microstructure and joining property of Si3N4 brazed joint

  • 1.

    State Key Lab of Advanced Welding and Joining, Harbin institute of Technology, Harbin 150001, China

  • 2.

    State Key Lab of Advanced Welding and Joining, Harbin institute of Technology, Harbin 150001, China;Shandong Provincial Key Laboratory of Special Welding Technology, Harbin institute of technology at Weihai, Weihai 264209, China

  • 3.

    Shandong Provincial Key Laboratory of Special Welding Technology, Harbin institute of technology at Weihai, Weihai 264209, China

摘要

    摘要
  • 摘要: 在900℃保温10 min的工艺条件下采用Ti含量不同的AgCu+Ti+nano-Si3N4复合钎料（AgCuC）实现了Si3N4陶瓷自身的钎焊连接，并对不同Ti元素含量的接头界面组织及性能进行了分析.结果表明，接头典型界面结构为Si3N4/TiN+Ti5Si3/Ag（s，s）+Cu（s，s）+TiNP+Ti5Si3P/TiN+Ti5Si3/Si3N4.随着复合钎料中Ti元素含量的增加，钎缝中团聚的纳米Si3N4颗粒逐渐减少，母材侧的反应层厚度逐渐增加后趋于稳定.当Ti元素含量高于4%时，钎缝中形成了类似于颗粒增强金属基复合材料的界面组织；当Ti元素含量达到10%时，有少量Ti-Cu金属间化合物在钎缝中形成；钎焊接头的抗剪强度随着Ti元素含量的增加而呈现先增加后降低的变化趋势，当Ti元素含量为6%时接头的抗剪强度达到最高值，即75 MPa.
    Abstract: The Si3N4 ceramic was brazed using AgCu+Ti+nano-Si3N4 composite filler(AgCuC) with different Ti contentat 900 ℃ for 10 min. The interfacial microstructure and the property of brazed joints were investigated in detail. The results showed that the typical interfacial microstructure of brazed joint was Si3N4/TiN+Ti5Si3/Ag(s,s)+Cu(s,s)+TiNP+Ti5Si3P/TiN+Ti5Si3/Si3N4. As the Ti content increased, the amount of aggregated nano-Si3N4 particles in the brazing joint decreased, while the thickness of reaction layer adjacent to substrate gradually increased and then remained unchanged. An composite-like interfacial microstructure was formed in the brazing joint when Ti content was beyond 4wt.%.However, when the Ti content further increased to 10%, a small amount of Ti-Cu intermetallic compounds was formed in brazing seam. The shear strength of brazed joints increased firstly and then decreased with the increase of Ti content.And when the Ti content was 6%, the shear strength reached a maximum value of 75 MPa.
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    • 参考文献(8)
  • [1] 王思青, 张长瑞, 王圣威, 等. Si3N4基复相陶瓷天线罩材料的制备及性能[J]. 国防科技大学学报, 2006, 28(2): 44-47. Wang Siqing, Zhang Changrui, Wang Shenwei, et al. Preparation and properties of Si3N4matrix radome ceramics[J]. Journal of National University of Defense Technology, 2006, 28(2): 44-47.
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    [7] He Y M, Zhang J, Liu X D, et al. Characterization of the Si3N4/Si3N4 joints fabricated using particles modified braze[J]. Materials Science and Engineering A, 2014, 616: 107-115.
    [8] Liu C F., Zhang J, Zhou Y, et al. Effect of Ti content on microstructure and strength of Si3N4/Si3N4 joints brazed with Cu-Pd-Ti filler metals[J]. Materials Science and Engineering: A, 2008491(1-2): 483-487.
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  • 收稿日期:  2015-07-27

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