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交换性离子和pH值对酸性土壤腐蚀的影响 总被引:1,自引:0,他引:1
研究了交换性酸度总量、交换性H+、交换性铝对A3钢在酸性土壤中的腐蚀影响.结果 表明:深圳土作为酸性土,它的缓冲性能很强,加不同pH的硝酸,对其pH值影响不大; 随硝酸的pH的增加,交换性铝、交换性酸度总量、交换性H+有相对减小的趋势,腐蚀速 率增大.当土壤pH约为4时,阴极过程发生变化,由氧放电转为氢放电. 相似文献
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Crystallization behaviors of Ce60Al15Fe5+xCo20-x(x=0,5,10) bulk metallic glasses(BMGs) were studied by means of differential scanning calorimeter(DSC) and X-ray diffraction(XRD).The crystallization processes of different samples were simulated by JMA equation.Experimental results demonstrated that incubation and crystallization time increased with decreasing isothermal temperature for the same sample.The crystallization mechanism of CeAlFeCo BMGs was discussed. 相似文献