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Zr-Nb-Cu合金高温水蒸气氧化动力学研究
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苏州热工研究院有限公司

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国家高技术研究发展计划(863计划)


Research on Oxidation Kinetics of Zr-Nb-Cu Alloy under High-temperature
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Suzhou Nuclear Power Research Institute

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    摘要:

    研究了Zr-Nb-Cu合金微观组织及其在700~1000°C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°C范围内服从抛物线规律,在1000°C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Kp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。

    Abstract:

    The microstructure and isothermal oxidation kinetics of Zr-Nb-Cu alloy under water vapor environment in the temperature range 700°C to 1000°C were studied, and the evolution laws of oxide film macro-morphologies and microstructures were also analyzed. The results show that the weight gain curves of water vapor oxidation of the alloy between 700°C and 900°C are in accordance with parabolic law, and the curve deviates from the parabolic law at 1000°C. According to the oxidation weight gain curves, the oxidation activation energy Q, the expressions of the parabolic rate constant Kp and the weight gain W were calculated respectively. The oxide film structure analysis results indicate that the oxidation temperature is higher, the crack and bulge of oxide film is more obvious.

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柏广海. Zr-Nb-Cu合金高温水蒸气氧化动力学研究[J].稀有金属材料与工程,2015,44(10):2445~2448.[Bai Guanghai. Research on Oxidation Kinetics of Zr-Nb-Cu Alloy under High-temperature[J]. Rare Metal Materials and Engineering,2015,44(10):2445~2448.]
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  • 收稿日期:2013-11-06
  • 最后修改日期:2014-02-24
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  • 在线发布日期: 2018-11-08
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