【作者】 林基伟； 叶林； 曾奇锋； 王永阳； 范博龙； 肖汀； 卢俊强；

【Author】 LIN Ji-wei;YE Lin;ZENG Qi-feng;WANG Yong-yang;FAN Bo-long;XIAO Ting;LU Jun-qiang;Shanghai Nuclear Engineering Research and Design Institute Co., Ltd.;Huazhong University of Science and Technology·Key Laboratory of Image Processing and intelligent control,Ministry of Education;

【机构】 上海核工程研究设计院有限公司； 华中科技大学图像信息处理与智能控制教育部重点实验室；

【摘要】 采用自主研发的锆合金包壳管专用热发射率测试系统对SZA-4和SZA-6两种国产新锆合金以及Z合金进行350～1200℃下不同氧化程度下的热发射率测试。结果表明,温度对热发射率的影响较小,试样热发射率主要受氧化膜厚度的影响。锆合金在氧化膜厚度小于10μm时,热发射率随氧化膜厚度增大而增大;当氧化膜厚度大于10μm时,热发射率随氧化膜厚度的变化不大。在本试验条件下,国产新锆合金SZA-4与SZA-6的热发射率与Z合金相当。更多还原

【Abstract】 The Thermal Emissivity of SZA-4, SZA-6 and Z alloy at different oxidation degrees were measured by the self-developed special thermal emissivity test system for zirconium alloy cladding tube at 350℃～1200℃.The results showed that the thermal emissivity was mainly affected by the thickness of the oxide film rather than temperature. When the oxide film <10μm, the thermal emissivity increased as the oxide film thickness increased. When the oxide film ≥10μm, the thermal emissivity did not change much with the oxide film thickness. The thermal emissivity of SZA-4 and SZA-6 was equivalent to Z in this experiment.更多还原