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电化学  2011 

核电站结构材料的锌离子注入电化学研究

, PP. 212-216

Keywords: 锌离子注入,高温水,结构材料,氧化膜,半导体性质

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Abstract:

应用电化学方法研究了锌离子注入(zincinjection)技术对核电站结构材料,如304L不锈钢、316L不锈钢和600合金在高温水中形成的氧化膜的电化学性能的影响.锌离子注入压水堆(PWR)一回路技术可有效减少材料应力腐蚀破裂(stresscorrosioncracking)和职业辐照.用动电位扫描法检测材料氧化膜的自腐蚀电位与腐蚀电流,根据Mott-Schottky曲线分析Zn离子注入对材料氧化膜半导体性质的改变.SEM和XPS观察与检测试样表面形貌及其组分.在Zn离子参与的金属氧化膜生成过程中,可生成Zn-Ni-Cr-Fe氧化物,从而提高了材料的抗腐蚀能力及改变氧化膜的半导体性质.

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