Zr-Nb-Cu合金高温水蒸气氧化动力学研究  

Oxidation Kinetics of Zr-Nb-Cu Alloy under High-temperature Water Vapor Environment

作　　者：柏广海[1,2] 王荣山[1] 翁立奎[1] 张晏玮[1] 刘二伟[1] 耿建桥[1] 李金山[2] 薛祥义[2] 

机构地区：[1]苏州热工研究院有限公司,江苏苏州215004 [2]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《稀有金属材料与工程》2015年第10期2445-2448,共4页Rare Metal Materials and Engineering

基　　金：中广核工程有限公司资助项目(GNDBDC00426);国家高科技研究发展计划资助项目(2008AA031701);苏州热工研究院有限公司2012年博士后基金资助项目

摘　　要：研究了Zr-Nb-Cu合金微观组织及其在700~1000℃范围等温水蒸气氧化动力学,并分析了氧化膜宏观形貌与微观组织演变规律。结果表明,Zr-Nb-Cu合金水蒸气氧化增重曲线在700~900℃范围内服从抛物线规律,在1000℃时曲线偏离抛物线规律;根据氧化增重曲线,计算了合金水蒸气氧化激活能Q、抛物线速率常数K p和氧化增重W的表达式。氧化膜组织分析结果显示,氧化温度越高,氧化膜开裂和鼓起也越明显。The microstructure and isothermal oxidation kinetics of Zr-Nb-Cu alloy under water vapor environment in the temperature range from 700 to 1000 °C were studied, and the evolution laws of oxide film macro-morphologies and microstructures were also analyzed. The results show that the mass gain curves of water vapor oxidation of the alloy between 700 and 900 °C are in accordance with parabolic law, while the curve deviates from the parabolic law at 1000 °C. According to the oxidation mass gain curves, the oxidation activation energy Q, and the expressions of the parabolic rate constant K p and the mass gain W were calculated. The oxide film structure analysis indicates that the higher the oxidation temperature, the more obvious the crack and bulge of oxide film.

关 键 词：Zr-Nb-Cu合金 水蒸气氧化 动力学 氧化膜 微观组织 

分 类 号：TG146.414[一般工业技术—材料科学与工程]