摘要
35CrMo钢表面爆炸喷涂WC-Co和等离子喷涂Cr2O3后都形成了具有一定厚度的涂层,涂层大大提高了母料的表面硬度。失重法测得2种涂层的CO2平均腐蚀速率比母材降低了2个数量级;CO2腐蚀后2种涂层表面光滑平整,没有发生明显的腐蚀痕迹,而35CrMo钢产生严重的CO2腐蚀。电化学实验表明,在酸性介质中WC-Co和Cr2O3涂层稳定性好,不会被破坏,涂层对基体材料有很好的保护性。
Detonation spraying WC-Co and plasma spraying Cr2O3 coatings with certain thickness improve hardness of 35CrMo steel excellently. The results of weight-loss method indicate that the comparison with 35CrMo steel, thermal spraying coatings＇ average CO2 corrosion rates reduce two orders of magnitudes. No corrosion was found on thermal spraying coatings but 35CrMo steel without coatings suffered from serous corrosion. Electrochemical experiment results indicate that thermal spraying coatings are steady in acidic solution so that coatings can protect matrix steel nicely.
出处
《石油矿场机械》
2008年第7期62-64,共3页
Oil Field Equipment
基金
国家自然科学基金项目"高温高压CO2腐蚀产物膜中离子传质与腐蚀相关性研究"(50601029)
