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文摘
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通过建立简易气体收集装置,研究了手汗液中不同组分对AZ91D合金的侵蚀性以及对合金表面析氢动力学过程的影响规律.发现手汗液各成分对镁合金的腐蚀具有不同的侵蚀作用,其中尿素对镁合金的腐蚀具有一定的缓蚀作用,而乳酸和NaCl则是较强的侵蚀性介质,且当乳酸与NaCl共存时,具有最强的侵蚀性.各成分单独存在时,合金表面析氢动力学过程满足不同的函数关系,在纯水和尿素体系,满足logistic关系式;在乳酸和NaCl体系,满足多项式关系.手汗液各成分对合金的不同侵蚀作用规律是导致动力学曲线不同的主要原因. |
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其他语种文摘
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In this work, effect of hand sweat composition on the corrosion behavior of AZ91D magnesium alloy was investigated, The pH value of the test solution was increased and the corrosion rate of AZ91D alloy decreased by adding urea, while the corrosion rates were accelerated by adding lactic acid or NaCl.The synergistic effect of lactic acid and NaCl played a key role in the corrosion process of AZ91D alloy in hand sweat. In water or urea containing solution, the kinetic curves of hydrogen evolution were the functions of "logistic model". In the NaCl or lactic acid containing solution, the kinetic curves of hydrogen evolution were the functions of " polynomial model" . |
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来源
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中国腐蚀与防护学报
,2004,24(5):276-279 【核心库】
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关键词
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镁合金
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手汗腐蚀
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析氢动力学
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地址
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中国科学院金属研究所, 金属腐蚀与防护国家重点实验室, 沈阳, 110016
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-4537 |
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学科
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金属学与金属工艺 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:1700518
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