摘要
介绍了中广核研究院在事故容错燃料(ATF)包壳领域的最新成果,通过预置粉末式脉冲激光熔覆技术,在不同的功率下制备出不同厚度的锆包壳管Cr保护层;通过高温蒸汽氧化增重数据发现,采用半导体脉冲激光熔覆技术、脉冲激光功率50～60 W、螺距0.8～0.9 mm、角速度10°/s等参数条件下制备Cr涂层可以获得较好的抗高温氧化性能,证明保护的效果直接受涂层质量控制。通过SEM分析了涂层的显微结构,采用扩散机理解释了Cr涂层在1200℃下与锆合金基体相容性良好的原因。
This paper introduces the latest ATF cladding achievements of China General Nuclear Power Corporation(CGN). The Cr coating of Zircon with different thickness was prepared under different power by pulse laser cladding technique. The results obtained so far show that Cr coating can achieve good high temperature oxidation resistance which prepared using pulse laser cladding technology under the parameters such as pulse laser power for 50~60 W, pitch for 0.8~0.9 mm and angular velocity for 10 mm. The mechanism analysis shows that the Cr coating has good compatibility with the Zirconium alloy at 1200℃, and the protective effect of Cr coating is directly controlled by the coating quality.
作者
李锐
刘彤
Li Rui;Liu Tong(Department ofATF R&D,China Nuclear Power Technology Research Institute, China General Nuclear Power Corporation (CGN),Shenzhen,518026,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2019年第1期74-77,共4页
Nuclear Power Engineering
基金
国家科技重大专项(2015ZX06004-001)
中国广核集团战略专项(3100069733)
