Interface structure and formation mechanism of directly-bonded joints of silicated graphite to fe-based alloys

被引：0

作者：

Chen, Jichun ^{[1
]}

Hao, Chuanyong ^{[1
]}

Zhang, Jinsong ^{[1
]}

机构：

[1] Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

来源：

Journal of Materials Science and Technology | 2007年 / 23卷 / 01期

关键词：

Bonding - Graphite - Interfaces (materials) - Iron alloys - Joints (structural components) - Silicates - Silicon carbide - Structure (composition);

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Commercially available OOOCr30Mo2 ferritic stainless steel and 4J33 ferromagnetic expansion alloy were directly bonded to silicated graphite at 1180-1200°C and 1100-1150°C, respectively. Interfacial microstructures were examined by scanning electron microscopy, electron probe microanalysis, and X-ray diffraction. The results showed that transient liquid-phase present during bonding promoted the interfacial reactions during bonding. Plenty of brittle chromium carbides, such as (Cr, Fe)7C3 and (Cr2.5Fe4.3Mo0.1)C3, were observed in 000Cr30Mo2/silicated graphite joints. Besides, transverse cracks were also found. In case of 4J33/silicated graphite system, well bonded joints free of defects were obtained.

引用

页码：92 / 96