均勻設計法研究環境因素對X120管線鋼點蝕敏感性交互影響

余璐; 黃峰; 劉靜; 范麗霞; 李曉剛

doi:10.13374/j.issn1001-053x.2011.01.007

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均勻設計法研究環境因素對X120管線鋼點蝕敏感性交互影響

doi: 10.13374/j.issn1001-053x.2011.01.007

余璐¹,
黃峰^1,2,
劉靜^1, ,,
范麗霞¹,
李曉剛²

1. 武漢科技大學材料與冶金學院鋼鐵冶金及資源利用省部共建教育部重點實驗室, 武漢 430081;
2. 北京科技大學材料科學與工程學院腐蝕與防護中心, 北京 100083

基金項目:

中國博士后科學基金資助項目(No.20090450293)

國家自然科學基金資助項目(No.50871077)

詳細信息

通訊作者:
劉靜,E-mail:wkdliu@126.com

中圖分類號: TG174.2
計量
- 文章訪問數: 232
- HTML全文瀏覽量: 73
- PDF下載量: 2
- 被引次數: 0
出版歷程
- 收稿日期: 2010-03-05

Interactive influence of environmental factors on the pitting susceptibility of X120 pipeline steel studied by a uniform design method

YU Lu¹,
HUANG Feng^1,2,
LIU Jing^{1
, ,},
FAN Li-xia¹,
LI Xiao-gang²

1. Key Laboratory of the Ministry of Education of China for Ferrous Metallurgy and Resources Utilization, School of Materials Science and Metallurgical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;
2. Corrosion and Protection Center, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 以Cl^-濃度、pH值和溫度為三因素,通過均勻設計試驗方法,采用動電位掃描技術研究了這三個環境因素對X120管線鋼在HCO₃^-+Cl^-介質中點蝕電化學行為的交互影響.結果表明:Cl^-濃度、pH值和溫度三因素對X120管線鋼在HCO₃^-+Cl^-溶液中的腐蝕和鈍化行為影響都較大,對其點蝕敏感性影響依次為Cl^-濃度>pH值>溫度,且Cl^-濃度與溫度間存在交互作用,該交互作用對X120管線鋼點蝕敏感性的影響程度介于Cl^-濃度和pH值之間;在Cl^-濃度為0mol·L^-1、pH8.5、溫度0℃的HCO₃^-+Cl^-溶液中,X120管線鋼的點蝕敏感性最小.
- 管線鋼 /
- 環境因素 /
- 點蝕 /
- 動電位極化
Abstract: A uniform design experimental method was employed to discuss the interactive influence of Cl^- concentration, pH values and temperature on the pitting susceptibility of X120 pipeline steel in HCO₃^- + Cl^- solutions by a potentiodynamic scan technique. The experimental results indicate that Cl^-^- concentration, pH values and temperature have great effect on the corrosion and passive behavior of X120 pipeline steel in HCO₃^- + Cl^- solutions, and the influence order is as follows:Cl^- concentration has the greatest impact, then the combined action of Cl^- concentration and temperature, the third one is pH values, and temperature has the smallest impact. X120 pipeline steel has the least pitting susceptibility in the HCO₃^- + Cl^- solution whose C1 concentration is 0 mol·L^-1, pH value is 8.5 and temperature is 0℃.
- pipeline steel /
- environmental factors /
- pitting /
- potentiodynamic polarization