摘要
选取不同脱氧程度的沸腾钢和镇静钢各两种,通过3%NaCl溶液中的极化试验测定了各自的点蚀电位,对其夹杂物形态和腐蚀形态进行观察,比较了它们的点蚀诱发敏感性。结果表明,钢中的夹杂物是主要的点蚀诱发源,而脱氧程度差的沸腾钢的点蚀电位明显高于镇静钢,腐蚀形态也有很大差异。综合分析认为,沸腾钢和镇静钢的点蚀诱发敏感性与脱氧程度和夹杂物类型、形态等因素有关。
Two types of representative rimmed steels and two typical killed steels were selected in order to compare the effect of different deoxygenating degrees. The pitting initiation susceptibility of these steels was compared by polarization tests in 3% NaCl solution. The results showed that the pitting potentials of rimmed steels were higher than those of the killed steels obviously. And the morphology of pitting corrosions was also quite different. The differences in pitting initiation susceptibility are attributed to the deoxidization technology in steel-making process and the kinds of inclusions in steels.
出处
《腐蚀与防护》
CAS
北大核心
2005年第5期192-195,共4页
Corrosion & Protection
关键词
沸腾钢
镇静钢
脱氧制度
夹杂物
点蚀诱发敏感性
Rimmed steel
Killed steel
Deoxidization technology
Inclusion
Pitting initiation susceptibility
