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| 1 | Stress Corrosion Cracking of X80 Steel in the Presence of Sulfate-reducing Bacteria显示文摘The systematic laboratory studies on the roles of sulfate-reducing bacteria(SRB) in the stress corrosion cracking(SCC) susceptibility of X80 steel subjected to cathodic potential have been conducted in a nearneutral pH soil solution by slow strain rate tests.The cathodic potential and SRB increase individually the SCC susceptibility of the steel in the soil solution.The positive role of the SRB activities in SCC susceptibility depends on the prolongation of pre-incubation time,and the SCC susceptibility of the steel increases under more negative potentials.What's more,the applied potentials and the presence of SRB work together in promoting the SCC susceptibility of the steel.But,the combined action becomes limited with decreasing cathodic potentials.The relationships between the plasticity loss and the permeable hydrogen concentration were established for the steel in the soil solution,regardless of under open circuit potential or cathodic potentials,in both the sterile and SRB inoculated conditions.The relationships are practically significant for the selection of safe cathodic protection(CP) potentials in the presence of SRB in soil environment. | Tangqing Wu Maocheng Yan Dechun Zeng Jin Xu Cheng Sun Changkun Yu Wei Ke | 2015 | Journal of Materials Science & Technology2015，31，4： | 11 |
| 2 | 炼油厂渣油循环水换热器腐蚀原因显示文摘以某炼油厂的渣油循环水换热器腐蚀为例,对循环水水质进行分析,利用扫描电镜(SEM)、能谱分析(EDS)和X射线衍射(XRD)等手段,结合循环水的水质分析结果和内表面腐蚀产物分析确定了换热管内壁腐蚀属于垢下的微生物SRB腐蚀,XRD分析出外壁腐蚀产物有Cl和S共存,确定了外壁腐蚀属于HCl与H2S的循环腐蚀。本文综合各类防腐方法,采用粉末渗锌法缓解此类腐蚀的措施,提出了利用磁性换热管抗腐蚀新的防腐方法。 | 王晓冬 张锁龙 徐清华 | 2015 | 腐蚀科学与防护技术2015，27，3： | 5 |
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