50W800无取向硅钢中Al2O3和Al2O3-MnS夹杂物的腐蚀行为研究
Research on Corrosion Behavior of Al2O3 and Al2O3-MnS Inclusions in Non-oriented Silicon Steel
向继明 1周和荣1
作者信息
- 1. 武汉科技大学 材料与冶金学院,湖北 武汉 430081
- 折叠
摘要
采用无取向硅钢退火样进行原位腐蚀实验,对试样表面腐蚀形貌进行OM表征、SEM表征、EDS分析、拉曼光谱表征.结果表明,无取向硅钢的腐蚀源自夹杂物的局部腐蚀,其中包含金属氧化物夹杂Al2O3、金属氧硫化物夹杂Al2O3-MnS.无取向硅钢初期腐蚀时圆形锈斑内腐蚀产物主要为γ-FeOOH和α-Fe2O3,且γ-FeOOH含量高于α-Fe2O3.随着腐蚀产物的颜色加深,α-Fe2O3 含量逐渐增多.
Abstract
The annealed samples of non-oriented silicon steel were used for in-situ corrosion experiments,and the surface corrosion morphology of the samples was characterized by OM,SEM,EDS and Raman spectroscopy.The results show that the corrosion of non-oriented silicon steel originates from the localized corrosion of inclusions,including metal oxide inclusions Al2O3 and metal oxysulfide inclusions Al2O3-MnS.During the initial corrosion of non-oriented silicon steel,the corrosion products in the circular rust spots are mainly γ-FeOOH and α-Fe2O3,and the content of γ-FeOOH is higher than that of α-Fe2O3.As the color of the corrosion products deepens,the content of α-Fe2O3 gradually increases.
关键词
无取向硅钢/夹杂物/Al2O3/Al2O3-MnS/原位观察Key words
non-oriented silicon steel/inclusions/Al2O3/Al2O3-MnS/in situ observation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据