• Volume 31 Issue 1
    Aug.  2021
    Turn off MathJax
    Article Contents
    SUN Qi-lei, CAO Bei, WU Yin-shun. Electrochemical behavior of various micro-areas on the welded joint of Q235 steel[J]. Chinese Journal of Engineering, 2009, 31(1): 41-47. doi: 10.13374/j.issn1001-053x.2009.01.005
    Citation: SUN Qi-lei, CAO Bei, WU Yin-shun. Electrochemical behavior of various micro-areas on the welded joint of Q235 steel[J]. Chinese Journal of Engineering, 2009, 31(1): 41-47. doi: 10.13374/j.issn1001-053x.2009.01.005

    Electrochemical behavior of various micro-areas on the welded joint of Q235 steel

    doi: 10.13374/j.issn1001-053x.2009.01.005
    • Received Date: 2007-12-27
      Available Online: 2021-08-09
    • The electrochemical behavior of welded joints of used Q235 pipeline steel was investigated in soil simulation solution. Polarization curves of various micro-areas were measured and related electrochemical parameters were acquired. The results show that the sequence of free corrosion potential from lower to higher or the sequence of free corrosion current density from higher to lower is melt run, incomplete normalized zone, overheated zone, normalized zone, tempered zone, base metal, and weld metal. These micro-areas of a welded joint compose a multiple electrode system when exposed to the same electrolyte. Melt run and incomplete normalized zone suffer corrosion dissolution firstly as the anode of a galvanic cell composed of a complex multiple electrode system, while weld area and base metal are subjected to cathodic protection as the cathode of the galvanic cell.

       

    • loading
    • 加載中

    Catalog

      通訊作者: 陳斌, bchen63@163.com
      • 1. 

        沈陽化工大學材料科學與工程學院 沈陽 110142

      1. 本站搜索
      2. 百度學術搜索
      3. 萬方數據庫搜索
      4. CNKI搜索
      Article views (268) PDF downloads(6) Cited by()
      Proportional views
      Related

      /

      DownLoad:  Full-Size Img  PowerPoint
      Return
      Return
      中文字幕在线观看