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Microstructural Aspects of Corrosion

机译:腐蚀的微观结构方面

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摘要

The effect of metal corrosion on the third-order microscopic properties, i.e., the root-mean-square deviation and internal residual stresses of the first-order, was studied. The corrosion process was studied on steel specimens under conditions of superheated steam (250 degrees C) during 500 h. The X-ray diffraction method was taken as the basic research method. The process of corrosion failure was concluded to have two reproducible periods: the period of active metal dissolution and latent passivation period, followed by the corrosion initiation phase. The metal passivity occurs due to the compressive stresses.
机译:研究了金属腐蚀对三阶微观性能的影响,即一阶的均方根偏差和内部残余应力。以X射线衍射法为基础研究方法,研究了钢试样在过热蒸汽(250℃)下500 h的腐蚀过程。腐蚀失效过程有两个可重复的阶段:活性金属溶解阶段和潜在钝化阶段,然后是腐蚀起始阶段。金属钝化是由于压缩应力引起的。

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