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.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
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
