共查询到19条相似文献,搜索用时 70 毫秒
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论述了氯碱化工设备设计中金属及非金属材料的选择,讨论了如何采用合理的结构防止各类腐蚀的发生,并介绍了主要防腐材料和引起应力腐蚀的介质环境。 相似文献
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辛佳音 《中国石油和化工标准与质量》2023,(7):21-23
随着我国经济的迅速发展,社会上各个行业对于油气的需求量也与日俱增,为了保证油气的安全输送,油气集输管道的重要性就凸显出来。然而在油气的运输过程中油气集输管道容易发生腐蚀,会造成油气泄漏、起火等安全事故,因此,了解油气集输管道的腐蚀机理和防腐措施就显得至关重要。本文针对油气集输管道的腐蚀机理与防腐措施进行分析,希望对油气的安全运输有所帮助。 相似文献
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油气资源是群众日常生活、工业生产等领域不可缺少的重要资源,为保证其能够充足稳定的供应,就必须做好油气管道的铺设、安装与维护工作.文章从阐述油气管道腐蚀机理入手,进一步分析了管道腐蚀检测技术的应用现状,最后提出了输送管道的有效防腐措施,以此提高油气管道的防腐性能,促进油气资源的安全输送. 相似文献
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The protection provided by a migrating corrosion inhibitor (MCI) based on an alkylaminoalcohol was tested on concrete specimens containing reinforcing steel bar (rebar) segments. Two inhibitor dosages were investigated, together with two water/cement ratios and various chloride contents. The inhibition efficiency was followed over a period of 1000 days measuring electrical and electrochemical parameters such as the corrosion potential, the corrosion current density, the electrical resistance and performing electrochemical impedance spectra. The inhibitor was able to reduce the corrosion rate only when the initial chloride content was below 0.16 wt.% (percent weight relative to cement content). The efficiency increased as the water/cement ratio increased. There was no beneficial effect when the initial chloride content was greater than 0.43 wt.%. The efficiency of the product increased when the amount of inhibitor being applied doubled. 相似文献
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Effects of non-uniform corrosion on the cracking and service life of reinforced concrete structures 总被引:1,自引:0,他引:1
Bong Seok Jang 《Cement and Concrete Research》2010,40(9):1441-952
The purpose of this study is to explore the effects of non-uniform corrosion on cracking behavior of concrete cover. The effects of non-uniform corrosion distribution, cover-to-rebar diameter ratio, and concrete compressive strength on the cracking pressure of concrete cover were studied. The present study indicates that the pressures to cause cracking of concrete cover under non-uniform corrosion conditions are much smaller than those under uniform corrosion case. The cracking pressure decreases up to about 60% depending upon the types of non-uniform corrosion distributions. It was also shown that cover-to-rebar diameter ratio and concrete compressive strength affect greatly the cracking pressure of concrete cover. Realistic equations on the cracking pressure of concrete cover were derived. The comparisons of analysis results with the test data on the cracking pressure of concrete cover show fairly good agreement. Finally, the effect of non-uniform corrosion on the service life of concrete structures was discussed. 相似文献
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