摘要
使用高温高流速环烷酸腐蚀模拟装置对20G低碳钢在不同温度和冲刷角下的环烷酸腐蚀行为进行了研究,结果表明:温度和冲刷角对20G低碳钢的环烷酸腐蚀行为有显著影响;冲刷角对腐蚀速率的影响与温度及流速有关,腐蚀速率在280～320℃达到峰值,超过320℃腐蚀速率随温度升高呈下降趋势。20G钢的腐蚀形貌分析表明:在环烷酸腐蚀时20G钢中的珠光体优先发生溶解,在珠光体腐蚀后再由晶界向晶内腐蚀铁素体。
High temperature and high flow rate naphthenic acid corrosion（NAC） simulation device was applied to investigate NAC behavior of 20G low carbon steel at various temperatures and flushing an- gle. The results show that temperature and flushing angle could significantly influence the corrosion rate of 20G steel in naphthenic acid. The influence of flushing angle is related with experiment tem- perature and flow rate, at 280-320~C the corrosion rate reaches the peak value, the corrosion rate de- creases with temperature when the temperature exceeds 320~C. The corrosion morphology analysis of 20G steel indicates that the perlites in 20G dissolute preferentially. The ferrite corrodes from the grain boundary to intracrystalline on y after the perlite dissolutes.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2013年第1期79-84,共6页
Journal of Materials Engineering
基金
国家863重点资助项目(2009AA04480204)
关键词
20G
环烷酸腐蚀
冲刷角
20G naphthenic acid corrosion
flushing angle
