Microstructure and mechanical properties of ZrB2-SiC ultrahigh temperature ceramic composite joint using TiZrNiCu filler metal

被引：9
|
作者：
Li, Z. R. [1 ]
Wang, Z. Z. [1 ]
Wu, G. D. [1 ]
Feng, J. C. [1 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2011年 / 16卷 / 08期
基金：
美国国家科学基金会;
关键词：
ZrB2-SiC ceramics; Brazing; Microstructure; Interface; TiZrNiCu; ZIRCONIUM;
D O I：
10.1179/1362171811Y.0000000063
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZrB2-SiC ceramic composite was brazed by using TiZrNiCu active filler metal. The microstructure and interfacial phenomena of the joints were analysed by means of SEM, energy dispersive X-ray spectroscopy and X-ray diffraction. The joining effect was evaluated by shear strength. The results showed that the reaction products of the ZrB2-SiC ceramic composite joint were TiC, ZrC, Ti5Si3, Zr2Si, Zr(s,s) and (Ti, Zr)(2) (Ni, Cu), and the microstructure was separately ZrB2-SiC/Zr(s,s)/Ti5Si3 + Zr2Si + TiC + ZrC +(Ti, Zr)(2)(Ni,Cu)/ Zr(s,s)/ZrB2-SiC. A conceptual interface evolution model was established to explain the interface evolution mechanism. The maximum shear strength of the brazed joints was 143.5 MPa at the brazing temperature T of 920 degrees C and the holding time t of 10 min.
引用
收藏
页码：697 / 701
页数：5
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