Study on Accident Resistant SiC/Zr Composite Material Prepared by Powder Metallurgy Process
YUE Huifang1,2, FENG Keqin1, PANG Hua2, ZHANG Ruiqian3, LI Yuanming2, LYU Liangliang2, ZHAO Yanli2, YUAN Pan2
1 School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065 2 Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213 3 Science and Technology on Reactor Fuel and Material Laboratory, Nuclear Power Institute of China, Chengdu 610041
Abstract: Accident resistant SiC/Zr composite material was prepared by powder metallurgy process using SiC powder and ZrH2 powder as the raw material. The optimum process parameters for sintering SiC/Zr composite material were determined by combination of thermodynamics analysis of SiC-Zr system and TGA-DSC results of ZrH2 and SiC mixed powders. In addition, the interface reaction in SiC-Zr system and corrosion beha-vior of SiC/Zr were also studied in detail. The results show that SiC/Zr composite material with high density(96%) can be successfully prepared by sintering at 1 100 ℃ for 90 min. SiC reacts with Zr at the interface and its products are Zr2Si and ZrC, thus leading to a layer structure of ZrC/ZrC+Zr2Si/ZrC from SiC side to Zr side in the reaction zone. Compared with the property of Zr prepared under the same conditions, corrosion resistance of SiC/Zr composite material is greatly enhanced
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2019, Vol. 33 
