Abrasion resistances of CO2 corrosion scales formed at different temperatures and their relationship to corrosion behaviour

作者：Li, J. L.; Zhu, S. D.^*; Qun, C. T.

来源：Corrosion Engineering, Science and Technology, 2014, 49(1): 73-79.

DOI：10.1179/1743278213Y.0000000117

• CO2 corrosion
• Corrosion scales
• P110 tubular steel
• Abrasion resistance
• SEM
• XRD

The abrasion resistances of CO2 corrosion scales formed on API P110 grade carbon steel at different temperatures and CO2 corrosion behaviour of P110 carbon steel have been investigated utilising weight loss method, scanning electron microscope (SEM) and X-ray diffraction (XRD). The results showed that as the film forming temperature increased, the abrasion rate of CO2 corrosion scales increased firstly and then decreased, the variation trend was similar to that of the corrosion rate, and the maximal abrasion rate was present at 70 degrees C rather than 100 degrees C, at which the maximal corrosion rate was obtained and CO2 corrosion scales were loose and porous and were composed of FeCO3, Fe3C and CaCO3. The abrasion resistances of CO2 corrosion scales formed at 100 degrees C was reinforced by the sand particles embedded easily in the loose and porous layer, together with a very hard residual skeleton, Fe3C. In addition, CaCO3 was worn out easily and substituted by SiO2 during abrasive wear.

• 出版日期2014-2
• 单位西北大学; 西安石油大学