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[1]周永璋,娄菲菲,朱启武,等.油罐沉积水中几种离子浓度对孔蚀的影响[J].南京工业大学学报(自然科学版),2013,35(06):56-59.[doi:10.3969/j.issn.1671-7627.2013.06.012]
 ZHOU Yongzhang,LOU Feifei,ZHU Qiwu,et al.Effects of concentration of several ions to pitting corrosion in sedimentary water of oil tank[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(06):56-59.[doi:10.3969/j.issn.1671-7627.2013.06.012]
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油罐沉积水中几种离子浓度对孔蚀的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年06期
页码:
56-59
栏目:
出版日期:
2013-11-20

文章信息/Info

Title:
Effects of concentration of several ions to pitting corrosion in sedimentary water of oil tank
文章编号:
1671-7627(2013)06-0056-04
作者:
周永璋娄菲菲朱启武何莲顾伯勤
南京工业大学 环境学院,江苏 南京 210009
Author(s):
ZHOU Yongzhang LOU Feifei ZHU Qiwu HE Lian GU Boqin
College of Environment, Nanjing University of Technology, Nanjing 210009, China
关键词:
油罐沉积水 孔蚀 滞后环 局部腐蚀 垢下腐蚀
Keywords:
sedimentary water of oil tank pitting corrosion hysteretic loop local corrosion under-deposit corrosion
分类号:
:TG172.6+3
DOI:
10.3969/j.issn.1671-7627.2013.06.012
文献标志码:
A
摘要:
为了研究油罐沉积水中几种离子对Q235钢局部腐蚀的影响,通过CHI660电化学工作站测滞后环的方法进行分析。结果表明:在研究范围内,局部腐蚀最严重时各离子质量浓度为C1- 10 g/L、SO2-4 1 g/L、HCO-3 0.75 g/L、Ca2+ 0.35 g/L、Mg2+ 0.2 g/L。Cl-为10 g/L时Q235钢的点蚀敏感性最大,大于10 g/L时,随着Cl-质量浓度增大,Q235钢发生点蚀的倾向变小; SO2-4质量浓度为1 g/L时Q235钢点蚀敏感性最大,大于1 g/L时,随着SO2-4质量浓度增大,Q235钢发生点蚀的倾向变小; HCO-3质量浓度为0.75 g/L时Q235钢最容易产生点蚀,HCO-3含量继续增大,大于0.75 g/L时,点蚀的倾向减小。Ca2+质量浓度为0.35 g/L时Q235钢最容易产生点蚀, Ca2+含量继续增大,大于0.35 g/L时,点蚀的倾向减小; Mg2+质量浓度为0.2 g/L时,Q235钢最容易产生点蚀,Mg2+含量继续增大,含量大于0.2 g/L时,点蚀的倾向减小。
Abstract:
To study effects of concentration of several ions in sedimentary water of oil tank to pitting corrosion on Q235 steel, hysteretic loops were measured by the electrochemical station CHI660.Results indicated that when the Q235 steel was most serious pitting-corroded, the concentrations of each ions were Cl- 10 g/L, SO2-4 1 g/L, HCO-3 0.75 g/L, Ca2+ 0.35 g/L, and Mg2+ 0.2 g/L.Q235 steel was most likely pitting-corroded on those ion concentrations. With the concentrations higher, than those mentioned above, pitting-corrosions tended to decrease.Q235 steel was most likely pitting-corroded on 10 g/L of Cl- concentration,with the increase of Cl-, more than 10 g/L, pitting-corrosions tended to decrease. With the increasing of SO2-4,more than 1 g/L,pitting on Q235 steel decreased. With HCO-3 continued to increase, more than 0.75 g/L, pitting reduced.It was easy to produce pitting when Ca2+ was 0.35 g/L, with the increasing of Ca2+,more than 0.35 g/L,pitting declined.It was very easy to bring about pitting on Q235 steel when Mg2+ was 0.2 g/L, more than 0.2 g/L,pitting gradually reduced.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-02-21
作者简介:周永璋(1964—),男,河南光山人,教授,主要研究方向为金属腐蚀与防护,E-mail:zhouyongzhang@126.com..
更新日期/Last Update: 2013-11-30