碳化硼锆合金烧结体反应界面研究  

Study on the interface reaction layer of B_4C Zirconium sintered body

作　　者：李圆圆[1] 朱常桂[1] 代胜平[1] 杨静[1] 乔慧武[1] 

机构地区：[1]中国核动力研究设计院核燃料及材料国家重点实验室,成都610041

出　　处：《粉末冶金技术》2015年第6期407-410,共4页Powder Metallurgy Technology

摘　　要：本文以氢化锆-2粉与B_4C粉为原料制备了B_4C-Zr-2可燃毒物烧结体,对碳化硼与锆基体的界面反应层进行了研究;用XRD分析了界面反应层的相成分,用扫描电镜对反应层的微观结构、反应层厚度与烧结温度的关系进行研究。结果表明当烧结温度高于900℃时,碳化硼与锫合金开始发生界面反应,生成碳化锆与二硼化锆,反应层的厚度随烧结温度的升高而增加,当烧结温度为900℃,1 000℃,1 100℃时,反应层厚度约为1μm,3μm,6μm。B_4C-zirconium burnable absorber sintered body was prepared using raw material of Zr-2 hydride powder and B_4C powder,the reaction layer between B_4C and zirconium matrix was studied in this paper.The phases of reaction layer were charactered by XRD,the influence of microstructure and the sintering temperature on the thickness of reaction layer was observed by SEM.The result show that when the sintering temperature reach to 900 ℃the reaction layer is formed between B_4C and zirconium matrix.The reaction layer is composed by ZrC and ZrB_2,the thickness of the reaction layer is increased with the increasing of sintering temperature.When the sintering temperature are 900 ℃,1 000 ℃,1 100 ℃,the reaction layer raise to 1 μm,3 μm,6 μm.

关 键 词：B_4C-Zr-2 反应层 氢化锆 烧结 

分 类 号：TQ174.758[化学工程—陶瓷工业]