Corrosion behavior of electrodeposited Ni with normal and bimodal grain size distribution
Corrosion behavior of electrodeposited Ni with normal and bimodal grain size distribution
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正态和双峰晶粒尺寸分布的电沉积镍的腐蚀行为
DOI：
10.1016/s1003-6326(19)64952-6
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发表时间：
2019-02
影响因子：
4.5
通讯作者：
Cui Lishan
中科院分区：
文献类型：
--
作者：
Yang Feng;Zhang Xiaofeng;Yang Hong;Liu Yinong;Hao Shijie;Cui Lishan
研究了具有正态和双峰晶粒度分布的电沉积镍的腐蚀行为。用扫描电子显微镜、电子背散射谱、透射电子显微镜和X射线衍射仪对样品的微观结构进行了研究。通过动电位测试和电化学阻抗法研究了其腐蚀行为。采用电沉积法制备了具有(100)和(111)织构的纳米晶镍。然后对纳米晶Ni进行不同温度的热处理，得到不同晶粒度分布和孪晶的Ni样品。晶粒度对样品腐蚀行为的影响取决于环境的钝化能力。在样品表面形成钝化膜的情况下，样品的耐腐蚀性随着晶粒度的减小而提高。相反，在未钝化时，耐蚀性随着晶粒度的减小而降低。具有双峰分布的样品的腐蚀行为服从混合规律。
The corrosion behavior of electrodeposited Ni with normal and bimodal grain size distribution was investigated. The microstructure of samples was researched by SEM, EBSD, TEM and XRD. The corrosion behavior was studied by potentiodynamic tests and electrochemical impedance. Nanocrystalline Ni with (100) and (111) textures was prepared by an electrodeposition method. The Ni samples with different grain size distributions and twins were then obtained by heat treatment of nanocrystalline Ni at different temperatures. The effect of grain size on corrosion behavior of the sample depends on the ability of the environment to passivate. In the case where passive film forms on the sample surface, the corrosion resistance of the sample increases with decreasing grain size. Conversely, the corrosion resistance decreases with decreasing grain size when there is no passivation. The corrosion behavior of samples with bimodal grain size distribution obeys the rule of mixture.
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影响因子：
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作者：
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通讯作者：
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DOI：
10.1016/s1003-6326(16)64136-5
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