| 304不锈钢在不同温度硝酸熔盐中的腐蚀行为 |
| |
| 引用本文： | 周才正,洛桑,孙延虎,张学文,唐建群,巩建鸣. 304不锈钢在不同温度硝酸熔盐中的腐蚀行为[J]. 机械工程材料, 2019, 43(5): 68-70,78 |
| |
| 作者姓名： | 周才正 洛桑 孙延虎 张学文 唐建群 巩建鸣 |
| |
| 作者单位： | 黄河上游水电开发有限责任公司,西宁,810008;南京工业大学机械与动力工程学院,极端承压装备设计与制造重点实验室,南京 211816 |
| |
| 摘 要： | 采用腐蚀动力学方法,结合腐蚀表面形貌观察和微区成分分析,研究了304不锈钢在不同温度(400,450,500,565℃)60%NaNO_3+40%KNO_3(质量分数)熔盐中的腐蚀行为。结果表明:试验钢在该熔盐中的腐蚀速率随着温度升高而增大,在565℃下的腐蚀速率达到99.6×10^(-5 )mg·cm-2·h-1;在400℃下试验钢表面只有极少量氧化腐蚀产物,在450℃和500℃下表面生成少量的Fe_2O_3,在565℃下表面形成以Fe_2O_3和(Fe,Cr)_3O_4为主的氧化腐蚀产物;随着温度升高,试验钢表面Fe_2O_3含量增加,氧化腐蚀程度加重。
|
| 关 键 词： | 304不锈钢 熔盐腐蚀 腐蚀动力学 硝酸盐 |
Corrosion Behavior of 304 Stainless Steel in Molten Nitrate Salt at Different Temperatures |
| |
| ZHOU Caizheng,LUO Sang,SUN Yanhu,ZHANG Xuewen,TANG Jianqun,GONG Jianming. Corrosion Behavior of 304 Stainless Steel in Molten Nitrate Salt at Different Temperatures[J]. Materials For Mechanical Engineering, 2019, 43(5): 68-70,78 |
| |
| Authors: | ZHOU Caizheng LUO Sang SUN Yanhu ZHANG Xuewen TANG Jianqun GONG Jianming |
| |
| Affiliation: | (Huanghe Hydropower Development Co.,Ltd.,Xining 810008,China;Key Lab of Design and Manufacture of Extreme Pressure Equipment, School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816,China) |
| |
| Abstract: | Corrosion behavior of 304 stainless steel in molten salt at different temperatures(400,450,500,565℃) was studied by corrosion kinetic method,corrosion surface observation and micro area composition analysis;the molten salt was composed of 60wt%NaNO3+40wt%KNO3.The results show that the corrosion rate of the tested steel in the molten salt increased with the increase of temperature,and reached 99.6×10-5 mg·cm-2·h-1 at 565℃.There was only few oxidation corrosion products on the surface of the tested steel at 400℃.There was a small amount of Fe2O3 on the surface at 450℃ and 500℃.The oxidation corrosion products mainly content of Fe2O3 and(Fe,Cr)3O4 were formed on the surface at 565℃,with the increase of temperature,the content of Fe2O3 increased considerably and the oxidation corrosion degree aggravated. |
| |
| Keywords: | 304 stainless steel molten salt corrosion corrosion kinetics nitrate salt |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
