Effect of pearlite on stress corrosion cracking of carbon steel in fuel-grade ethanol

JanneTorkkeli; TapioSaukkonen; HannuH?nninen

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Effect of pearlite on stress corrosion cracking of carbon steel in fuel-grade ethanol

机译：珠光体对燃料级乙醇中碳钢应力腐蚀开裂的影响

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The selective dissolution of ferrite phase from the pearlite was studied in fuel-grade ethanol (FGE) to understand how it affects the stress corrosion cracking (SCC) mechanism of carbon steel in FGE. It was shown that microgalvanic coupling occurs between ferrite and cementite phases of the pearlite, leading to localized corrosion, which affects the SCC mechanism. The intergranular SCC mechanism stops at the pearlite, and the selective dissolution promotes the transgranular SCC mechanism. Cathodic polarization curves were measured for pure iron and cementite exposed to various FGE conditions. According to the results, cementite phase is, in most cases, a more favorable cathode in FGE.

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来源
《Corrosion Reviews》 |2018年第3期|共13页
作者
JanneTorkkeli; TapioSaukkonen; HannuH?nninen;
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作者单位

Department of Mechanical Engineering Aalto University PO Box 14200 00076 Aalto Finland;

Department of Mechanical Engineering Aalto University PO Box 14200 00076 Aalto Finland;

Department of Mechanical Engineering Aalto University PO Box 14200 00076 Aalto Finland;

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原文格式 PDF
正文语种 eng
中图分类金属腐蚀与保护、金属表面处理;
关键词
carbon steel; fuel-grade ethanol; pearlite; selective dissolution; stress corrosion cracking;

机译：碳钢;燃料级乙醇;珠光体;选择性溶解;应力腐蚀开裂;

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2. Effect of pearlite on stress corrosion cracking of carbon steel in fuel-grade ethanol [J] . JanneTorkkeli, TapioSaukkonen, HannuH?nninen Corrosion Reviews . 2018,第3期

机译：珠光体对燃料级乙醇中碳钢应力腐蚀开裂的影响
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Effect of pearlite on stress corrosion cracking of carbon steel in fuel-grade ethanol

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