摘要
利用自行研制的双速流动试验装置，用模拟电池的方法，研究了在模拟轮南油田回注污水中，油套管用钢ＡＰＩＰ１０５ 沉积物下局部腐蚀行为．结果发现其腐蚀速度随阴阳极面积比Ａｃ／ Ａａ 的增加先增大后减小，而后又重新增大．沉积物下腐蚀还受其他因素影响，如：流速、ＣＯ２ 分压等．这些因素的影响规律与面积比Ａｃ／Ａａ 有关．
By using the dynamic loop test system with dual speeds, which was designed and constructed by authors themselves , the corrosion rate beneath deposit on API\|P105 in CO 2\|containing ,simulating injection water of Lunnan Oil Field was measured with a simulating cell. The results showed that the corrosion rate increased with increasing the ratio of the surface areas of cathode to that of anode(A c/A a). But when A c/A a increased to certain value, the corrosion rate decreased first, then increased with increasing A c/A a. In this paper, the non\|monotonic relationship between the corrosion rate and the A c/A a value is discussed and clarified. The corrosion rate was also be affected by such factors as flowing rate, partial pressure of CO 2 etc. When A c/A a was small, there was little effect on it. But after A c/A a increased to certain value, the effect would be larger.
出处
《腐蚀科学与防护技术》
CAS
CSCD
2000年第1期12-15,共4页
Corrosion Science and Protection Technology
