国产690合金传热管材料耐点腐蚀性能评价

Nuclear Power Engineering(2020)

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Abstract
采用GB/T 17897-2016的方法B,对国产及法国进口的蒸汽发生器传热管用690合金进行盐酸-6%三氯化铁溶液的点腐蚀实验.实验后试样形貌和点腐蚀速率计算结果表明,国产690合金直管和弯管的耐点腐蚀性能均与进口材料相当,U型传热管上不同位置的耐点腐蚀性能没有明显差异.另外,针对690合金,建议缩短GB/T17897-2016方法B的实验时间.
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