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叙述了几种常用的钢筋腐蚀监测电化学和物理测量技术,分析了各种方法的原理及特点,介绍了目前各种方法技术在钢筋混凝土腐蚀监测上的应用情况. 相似文献
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The corrosion behavior of B30 Cu-Ni alloy in a sterile seawater and a SRB solution was investigated. The results show that the corrosion potential of specimen in the SRB solution is much lower than that in the sterile seawater. The polarization resistance of specimen in the SRB solution decreases quickly after a period immersion and becomes much lower than that in the sterile seawater. It is concluded that the SRB accelerates the corrosion process of B30 Cu-Ni alloy greatly. An anti-corrosion electroless Ni-P coating was produced and applied to the alloy. The results show that specimens coated with Ni-P plating exhibit favorable corrosion resistance property in SRB solution. Severe pitting corrosion appears on the uncoated specimens in the SRB solution when the coated specimens are still in good condition. The anti-corrosion mechanism of Ni-P plating was analyzed. It is concluded that coating the B30 Cu-Ni alloy with electroless Ni-P plating is an effective technique against the attack of SRB in marine environment. 相似文献
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利用原子力显微镜(AFM)和电化学方法研究了海水中硫酸盐还原菌(SRB)对18--8不锈钢(18--8SS)点蚀过程的影响. AFM探测显示, 微观蚀孔的生长速率在含SRB介质中明显高于在灭菌介质中. 阳极循环极化结果表明, SRB的代谢产物显著降低了18--8SS的点蚀电位和再钝化电位; 而且在含SRB介质中, 18--8SS在短时间内就能被活化, 表明SRB的代谢活动极大地促进了钝化层的破坏过程. 阴极极化曲线表明, 含SRB介质中单质硫或多态硫的还原是促使点蚀生长的主要因素, 其阴极还原电流密度可以达到很高的数值(>10 μA/cm2). 相似文献
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硫酸盐还原菌对18-8不锈钢点蚀行为的影响 总被引:4,自引:0,他引:4
利用原子力显微镜(AFM)和电化学方法研究了海水中硫酸盐还原菌(SRB)对18-8不锈钢(18-8SS)点蚀过程的影响. AFM探测显示,微观蚀孔的生长速率在含SRB介质中明显高于在灭菌介质中.阳极循环极化结果表明,SRB的代谢产物显著降低了18-8SS的点蚀电位和再钝化电位;而且在含SRB介质中,18-8SS在短时间内就能被活化,表明SRB的代谢活动极大地促进了钝化层的破坏过程.阴极极化曲线表明,含SRB介质中单质硫或多态硫的还原是促使点蚀生长的主要因素,其阴极还原电流密度可以达到很高的数值(>10 μA/cm2). 相似文献
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本文研究了阳离子聚合物 ZYC(地层稳定剂)对泥质砂岩油层的稳定作用,通过流体流动试验考察了 ZYC 对泥质砂岩岩心渗透率的影响,介绍了用 ZyC 处理油层、防治采油井出砂的现场试验结果。 相似文献
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本文重点研究建筑表皮对建筑整体造型的表现,探索了建筑材料发展,以及建筑表皮在建筑美学以及建筑造型上的视觉印象。 相似文献