高强Q450NQR1货车车厢板耐腐蚀性能分析  

Analysis of Corrosion Resistance About High Strength Q450NQR1 Steel for Railway Truck

作　　者：卢军辉[1,2] 王晓春[3] 刘家琪[1] 张成武[3] 仇圣桃[1] 朴峰云[3] 

机构地区：[1]钢铁研究总院先进钢铁流程及材料国家重点实验室,北京100081 [2]中铁检验认证中心,北京100081 [3]通化钢铁股份有限公司技术中心,吉林通化134000

出　　处：《物理测试》2014年第3期4-8,共5页Physics Examination and Testing

摘　　要：为了考察开发钢Q450NQR1的耐候性,对其分别进行了实验室周期浸润试验和大气暴晒试验,试验结果表明,实验室周期浸润试验中,144 h腐蚀率相对Q345B减少了1/3,且Q450NQR1锈层中稳定的α-FeOOH含量较高,而Q345B钢较低;大气暴晒试验中,腐蚀初期Q450NQR1钢试样腐蚀率稍大一些,腐蚀后期,其表面形成稳定的致密锈层后,Q450NQR1钢的耐腐蚀性能开始体现。In order to investigate the corrosion resistantance of Q450NQR1 developed steel, alternative immersion test and atmospheric exposure test were carried out in laboratory and Zhoushan, respectively. The results show that along with the corrosion time, the corrosion rate of Q450NQR1 decreases 1/3 compared with Q345B, and the rust layer of Q450NQR1 is stable. In atmospheric exposure test, when corrosion is beginning, the corrosion rate of Q450NQR1 was slightly higher than that of Q345B, but when the rust layer become stable on the surface, its corrosion resistantance appears.

关 键 词：耐候钢 货车车厢 X射线衍射 大气腐蚀 锈层 

分 类 号：TG174.3[金属学及工艺—金属表面处理]