Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution
Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution
复制标题
碳钢紧固件在中性氯化物溶液中的腐蚀行为
DOI：
10.1007/s40195-021-01284-4
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发表时间：
2021-08
期刊：
影响因子：
--
通讯作者：
Wang Changgang
中科院分区：
文献类型：
--
作者：
Daniel Enobong Felix;Dong Junhua;Li Xiaofang;Etim Ini-Ibehe Nabuk;Udoh Inime Ime;Ma Rongyao;Chen Lei;Wang Changgang
设计了由碳钢接触电极（CCSE）和裸露碳钢板电极（BCSE）组成的模拟碳钢紧固件（螺栓和螺母）腐蚀的实验模型。评价了耦合对电化学耦合碳钢电极的腐蚀过程的影响，并与在暴露区域和接触区域独立观察到的自腐蚀过程进行了比较。得到的结果表明，在一个相等的面积比和解耦的条件下，腐蚀速率加快，在表面直接暴露于散装溶液相比，螺栓表面接触螺母。当暴露表面（BCSE）与接触表面（CCSE）电连接时，记录耦合电流;其中CCSE充当阳极，从而抑制暴露表面中的腐蚀过程。CCSE和BCSE之间的电偶耦合增加了CCSE的腐蚀速率。氧气供应的差异是负责在系统中观察到的耦合效应，因为没有降低溶液的pH值。此外，改变阴极-阳极面积（Sc/Sa）比显着影响的腐蚀电流密度增加Sc/Saratio导致加速电偶腐蚀过程。用体视显微镜和扫描电子显微镜对腐蚀后的表面和界面进行了分析。采用X射线衍射法对腐蚀产物进行表征。所获得的结果显示了碳钢紧固件腐蚀行为的支持性证据。
An experimental model for simulating the corrosion of carbon steel fasteners (bolt and nut) composed of a contact carbon steel electrode (CCSE) and an exposed bare carbon steel plate electrode (BCSE) was designed. The effect of coupling on the corrosion process of the galvanically coupled carbon steel electrode was evaluated and compared with the self-corrosion process observed independently at the exposed and contact regions. Results obtained indicated that at an equal area ratio and uncoupled conditions, the corrosion rate is accelerated in the surface directly exposed to bulk solution compared to the bolt surface in contact with the nut. A coupling current was recorded when the exposed surface (BCSE) was electrically connected with the contact surface (CCSE); with the CCSE acting as the anode thereby suppressing the corrosion process in the exposed surface. By implication, the galvanic coupling between CCSE and BCSE increased the corrosion rate of CCSE. The difference in oxygen supply was responsible for the coupling effect observed in the system as there was no decrease in the solution pH. Moreover, varying the cathode-to-anode area (Sc/Sa) ratio significantly influenced the corrosion current density as increasedSc/Saratio resulted in an accelerated galvanic corrosion process. The corroded surfaces and interfaces were analysed using stereomicroscopy and scanning electron microscopy. X-ray diffractometry was adopted for corrosion product characterization. The results obtained showed supportive evidence of the corrosion behaviour in carbon steel fasteners.
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DOI：
10.22441/sinergi.2018.1.002
发表时间：
2018-02
期刊：
--
影响因子：
--
作者：
D. Prayitno;M. Irsyad
通讯作者：
D. Prayitno;M. Irsyad
DOI：
10.3390/molecules19079962
发表时间：
2014-07-09
期刊：
Molecules (Basel, Switzerland)
影响因子：
--
作者：
Sherif el-SM
通讯作者：
Sherif el-SM
影响因子：
8.3
作者：
Zou, Y.;Wang, J.;Bai, Q.;Zhang, L. L.;Peng, X.;Kong, X. F.
通讯作者：
Kong, X. F.
DOI：
10.1179/000705972798323134
发表时间：
1972-05
期刊：
British Corrosion Journal
影响因子：
--
作者：
H. Silman
通讯作者：
H. Silman
DOI：
10.1007/s40195-018-0793-6
发表时间：
2018-08
期刊：
Acta Metallurgica Sinica (English Letters)
影响因子：
--
作者：
Luan-Xiang Wang;Ren-Bo Song;Chang-Hong Cai;Jing-Yuan Li
通讯作者：
Luan-Xiang Wang;Ren-Bo Song;Chang-Hong Cai;Jing-Yuan Li