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Further studies on the effect of irradiation on the corrosion of carbon steel in alkaline media

机译：进一步研究辐射对碱性介质中碳钢腐蚀的影响

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This paper summarises recent experimental results from a programme that was carried out to investigate the effects of radiation on the anaerobic corrosion of carbon steel, in relation to the overpack that will be used in the Belgian supercontainer concept for radioactive waste disposal. Anaerobic corrosion rates of carbon steel were measured by monitoring hydrogen evolution using manometric gas cells and an autoclave and the corresponding electrochemical behaviour was investigated by measuring open circuit potential, linear polarisation resistance and alternating current impedance. The test medium was alkaline simulated pore water, at γ-irradiation dose rates of 0 and 25 Gy h~(-1), temperatures of 25 and 80℃ and chloride concentrations of 0 and 100 mg L~(-1). The anaerobic corrosion rates exhibited a slow decline due to the formation of magnetite. Good agreement was found with weight loss measurements. A dose rate of 25 Gy h~(-1) had a negligible effect on gas generation rates.
机译：本文总结了一个程序的最新实验结果，该程序是为了研究辐射对碳钢厌氧腐蚀的影响，该程序与比利时超级容器概念中用于放射性废物处置的外包装有关。碳钢的无氧腐蚀速率通过使用测压气室和高压釜监测氢的释放来测量，并通过测量开路电势，线性极化电阻和交流阻抗来研究相应的电化学行为。测试介质为碱性模拟孔隙水，γ辐射剂量率为0和25 Gy h〜（-1），温度为25和80℃，氯离子浓度为0和100 mg L〜（-1）。由于磁铁矿的形成，厌氧腐蚀速率显示出缓慢的下降。减肥测量结果一致。 25 Gy h〜（-1）的剂量率对气体产生速率的影响可忽略不计。

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