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蔺晓超, 曹健, 张丽霞, 冯吉才. ZrO2陶瓷与Kovar合金钎焊接头的组织与性能[J]. 焊接学报, 2011, (9): 65-68.
引用本文: 蔺晓超, 曹健, 张丽霞, 冯吉才. ZrO2陶瓷与Kovar合金钎焊接头的组织与性能[J]. 焊接学报, 2011, (9): 65-68.
LIN Xiaochao, CAO Jian, ZHANG Lixia, Feng Jicai. Microstructure and mechanical properties of ZrO2 ceramic and kovar brazed joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2011, (9): 65-68.
Citation: LIN Xiaochao, CAO Jian, ZHANG Lixia, Feng Jicai. Microstructure and mechanical properties of ZrO2 ceramic and kovar brazed joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2011, (9): 65-68.

ZrO2陶瓷与Kovar合金钎焊接头的组织与性能

Microstructure and mechanical properties of ZrO2 ceramic and kovar brazed joints

  • 摘要: 在钎焊温度825~960℃,保温时间1~60 min的条件下,采用自行设计制备的Ag-Cu-TiH2活性粉末钎料实现了ZrO2陶瓷和4J33 Kovar合金的钎焊.利用扫描电镜、能谱分析及X射线衍射分析的方法对接头的界面组织进行了分析.结果表明,接头典型界面结构为Kovar/Ag(s.s)+Cu(s.s)+TiFe2/TiNi3+TiFe2+Ti-Fe-Ni/Ag(s.s)+Cu(s.s)+TiFe2/Cu2Ti4O/TiO+ZrxOy/ZrO2.对接头抗剪强度的分析结果表明,在钎焊温度875℃,保温时间10 min的条件下,接头获得了最高抗剪强度134 MPa,断裂发生在TiC反应层.随着钎焊温度及保温时间的变化,钎焊接头均发生不同程度的弱化,接头抗剪强度下降.

     

    Abstract: Brazing of ZrO2 ceramic to Kovar alloy was successfully realized by using self-developed Ag-Cu-TiH2 filler powder at the 825~960℃ for 1~60 min. Interface microstructures were investigated by scanning electron microscopy, X-ray diffraction and EDS energy spectrum. The results showed that the typical interface microstructure of brazed joints from Kovar side to ZrO2 ceramic side could be expressed as Kovar/Ag(s. s) + Cu(s. s) + TiFe2/TiNi3+ TiFe2+ Ti-Fe-Ni/Ag(s. s) + Cu(s. s) + TiFe2/Cu2Ti4O/TiO + ZrxOy/ZrO2. The maximum shear strength of the joints was 134 MPa, which was achieved when the brazing temperature was 875℃ and holding time was 10 min. The brittle fracture took place on the TiC interface. When the brazing temperature and holding time changed, the brazed joints weakened and the shear strength decreased.

     

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