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新型高温锆合金在500℃/10.3 MPa水蒸气中的腐蚀行为研究

发表时间:2009-06-30  浏览量:1726  下载量:587
全部作者: 熊计,王均,龙冲生,苗志,范洪远,黄照华,应诗浩�
作者单位: 四川大学制造学院;中国核动力研究设计院,核燃料及材料重点实验室
摘 要: 主要研究了不同含量的Zr-Nb-Cu合金的显微组织及其在500℃, 10.3 MPa 过热水蒸汽中的耐腐蚀性能。结果表明:Zr-Nb-Cu合金经过真空熔炼、�β�淬火、真空包覆热轧及冷轧和真空退火处理,得到的组织主要为�α�-Zr基体和弥散分布的第二相粒子。在500℃,10.3 MPa 过热水蒸汽中,含有适当Nb, Cu的Zr-Nb-Cu合金为均匀腐蚀,且其耐过热水蒸汽腐蚀能力优于N18和Zr-4合金。含Nb, Cu元素不同的实验锆合金由于成分不同,耐腐蚀性能也有明显的差别,Zr-1.0Nb-0.05Cu合金的耐蚀性最好。调整合金成分是改善锆合金在500℃,10.3 MPa 过热水蒸汽中的耐腐蚀性能的主要途径。
关 键 词: 核材料与工艺技术;Zr-Nb-Cu合金;高温高压水;高压釜腐蚀;显微组织�
Title: The corrosion behavior of new types zirconium alloys in 500℃/10.3 MPa water steam
Author: XIONG Ji, WANG Jun,LONG Chongsheng,MIAO Zhi,FAN Hongyuan,HUANG Zhaohua,YING Shihao
Organization: School of Manufacture Science & Technology, Sichuan University;The Key Laboratory for Nuclear Materials, Nuclear Power Institute of China
Abstract: The corrosion behaviors of Zr-�x�Nb-�y�Cu alloys have been investigated in the steam-gas of �500℃� and 10.3 MPa by autoclave tests. The results showed that the corrosion behaviors of them were distinct. The uniform corrosions occurred on the Zr-�x�Nb-�y�Cu alloys. The Zr-1.0Nb-0.05Cu specimens have the best corrosion resistance, rather than N18 alloy. The second phase particles of uniform distribution and higher density are beneficial to improving the corrosion resistance in steam-gas. However, the composition of zirconium alloys is a more important factor with a potential possibility for improving the corrosion resistance in 500℃/10.3 MPa environment by adjusting the composition of zirconium alloys.
Key words: nuclear materials and process technology; Zr-Nb-Cu alloy; hot water steam; autoclave corrion; microstructure
发表期数: 2009年6月第12期
引用格式: 熊计,王均,龙冲生,等. 新型高温锆合金在500℃/10.3 MPa水蒸气中的腐蚀行为研究[J]. 中国科技论文在线精品论文,2009,2(12):1289-1294.
 
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