全面腐蚀控制
全麵腐蝕控製
전면부식공제
Total Corrosion Control
2015年
9期
64-69
,共6页
祝烺贤%龚喆%吴堂清%许进%闫茂成%孙成
祝烺賢%龔喆%吳堂清%許進%閆茂成%孫成
축랑현%공철%오당청%허진%염무성%손성
红壤X100管线钢%硫酸盐还原菌%电化学%微生物腐蚀
紅壤X100管線鋼%硫痠鹽還原菌%電化學%微生物腐蝕
홍양X100관선강%류산염환원균%전화학%미생물부식
red soil%X100 pipeline steel%sulfate-reducing bacteria%electrochemistry%microbiologically induced corrosion
利用Tafel极化曲线和电化学阻抗谱方法研究了X100管线钢在红壤中硫酸盐还原菌(SRB)腐蚀的电化学特征.结果表明,整个实验过程中SRB生理活动提高了红壤中管线钢的腐蚀速率,接菌红壤中管线钢的开路电位低于灭菌红壤土壤浸出液中;SRB生理活动影响管线钢表面腐蚀产物的电容和电阻性质,进而促进管线钢腐蚀过程;这种促进作用在实验后期SRB代谢产物富集时达到最大值;根据本文研究结果,铺设于酸性红壤中的管线钢必须考虑SRB对其腐蚀行为的影响.
利用Tafel極化麯線和電化學阻抗譜方法研究瞭X100管線鋼在紅壤中硫痠鹽還原菌(SRB)腐蝕的電化學特徵.結果錶明,整箇實驗過程中SRB生理活動提高瞭紅壤中管線鋼的腐蝕速率,接菌紅壤中管線鋼的開路電位低于滅菌紅壤土壤浸齣液中;SRB生理活動影響管線鋼錶麵腐蝕產物的電容和電阻性質,進而促進管線鋼腐蝕過程;這種促進作用在實驗後期SRB代謝產物富集時達到最大值;根據本文研究結果,鋪設于痠性紅壤中的管線鋼必鬚攷慮SRB對其腐蝕行為的影響.
이용Tafel겁화곡선화전화학조항보방법연구료X100관선강재홍양중류산염환원균(SRB)부식적전화학특정.결과표명,정개실험과정중SRB생리활동제고료홍양중관선강적부식속솔,접균홍양중관선강적개로전위저우멸균홍양토양침출액중;SRB생리활동영향관선강표면부식산물적전용화전조성질,진이촉진관선강부식과정;저충촉진작용재실험후기SRB대사산물부집시체도최대치;근거본문연구결과,포설우산성홍양중적관선강필수고필SRB대기부식행위적영향.
In this paper, electrochemical characteristics of sulfate-reducing bacteria (SRB) corrosion of X100 pipeline steel were monitored in an red soil by Tafel electrochemical curve and electrochemical impedance spectroscopy. The results showed that SRB physiological activity enhanced the corrosion process of the steel in red soil in the whole experiment. The corrosion potential of the steel in the SRB-inoculated soil was more negative than that in the sterile one. SRB physiological activity altered the electric-capacity and electric-resistance properties of the corrosion productfilm on the steel surface. The positive role of SRB physiological activity reached the maximum on the last day of the experiment. The SRB's effects on corrosion behavior of pipeline steel buried in red soil could be taken into account in the practice of project.
