3Cr钢在CO_2环境中的腐蚀研究  

Corrosion research of 3Cr steel in CO_2 environment

作　　者：张仁勇[1,2] 漆亚全 施岱艳[1,2] 陈勇彬[1,2] 张金钟[1,2] 鞠岚[1,2] 

机构地区：[1]中国石油集团工程设计有限责任公司西南分公司 [2]中国石油天然气集团公司石油管工程重点实验室酸性气田管材腐蚀与防护研究室 [3]中国石油塔里木油田分公司塔中项目经理部

出　　处：《石油与天然气化工》2013年第1期61-63,共3页Chemical engineering of oil & gas

基　　金：国家科技重大专项资助项目(2011ZX-05059-004);CPE西南分公司科研项目"综合防腐技术研究子平台"(KY2011-18)

摘　　要：利用高温高压反应釜研究了3Cr钢在模拟中海油CO2环境中的腐蚀行为。在温度60℃、p(CO2)1.5MPa及介质流速为1m/s时,两组3Cr钢均呈现较严重的均匀腐蚀,平均腐蚀速率分别达到3.85mm/a和3.24mm/a。结合SEM和EDS分析手段研究了3Cr钢的CO2腐蚀产物。结果表明,其外层结构主要是堆垛疏松、附着力弱的FeCO3晶粒,内层为富Cr产物膜。The corrosion behaviors of 3Cr steel in simulative CNOOC CO2 environment have been studied with a high-temperature and high-pressure reactor.Under the conditions that temperature was 60℃,CO2 partial pressure was 1.5 MPa and the flow velocity of corrosive medium was 1 m/s,two kinds of 3Cr steel samples present severe uniform corrosion,the average corrosion rate of 3Cr steel are 3.85 mm/a and 3.24 mm/a respectively.The corrosion products of 3Cr steel in CO2 environment have been analyzed by SEM and EDS.The result indicates that the products of 3Cr steel have two layers,the outer main structure is FeCO3 with stacking loose and low adhesion,the inner layer is product film with enrichment Cr.

关 键 词：3Cr钢 CO2腐蚀 腐蚀产物 微观形貌 

分 类 号：TG178[金属学及工艺—金属表面处理]