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OALib Journal期刊
ISSN: 2333-9721
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研究电化学充氢过程中x70钢氢吸收的新方法
Abstract:
？提出了一种测定管道钢阴极充氢或阴极保护过程中氢吸收的新方法.将阴极预充氢试样在稀naoh溶液中恒电位阳极极化,测量了试样中吸收氢的脱附(氧化)电流随时间的变化曲线.利用该曲线分析吸收氢的量,并建立其与预充氢电流密度、充氢时间及充氢溶液ph间的关系,探索用于评价x70管道钢对阴极充氢敏感性的指标.结果表明,在双对数坐标中试样中的氢浓度分别是预充氢电流密度和时间的单增函数.降低充氢溶液ph可大大提高x70钢的氢吸收量.
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