摘要
利用高温高压釜模拟某油田实际工况,根据环氧涂层腐蚀前后电化学阻抗谱(EIS)的变化和宏观、微观形貌变化以及能谱分析,考察了CO_2对环氧涂层防腐性能的影响.结果表明,与单纯的NaCl溶液相比,溶液中CO_2的存在加速了环氧涂层的失效过程;而且随着温度的升高,涂层失效加速.
The anti-corrosion property of an epoxy coating on 16 Mn steel was studied by use of autoclave.The epoxy coating was exposed to a medium containing 1.8 g/L NaCl and CO_2 with a partial pressure of 1.8 MPa at temperatures 30℃,60℃and 90℃respectively.The characteristics of coating before and after corrosion were examined by EIS,SEM and EDX.The experimental results show that the presence of CO_2 increased the degradation process of the epoxy coating in NaCl medium.In addition,with the increasing of temperature,the degradation of the coating was further accelerated.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2010年第5期412-414,共3页
Corrosion Science and Protection Technology
