摘要
采用坩埚法,借助自行设计的高温X射线透射影槐设备,通过X射线照像及电视观察,研究了烧结MgO材料在炉渣(SiO_2-FeO-CaO)与冰铜(FeS-Cu_2S)界面区局部优先侵蚀过程。发现:MgO材料与渣中FeO形成致密的(Fe,Mg)O层,紧邻(Fe,Mg)o层形成渣膜,而界面张力流的存在使渣膜产生运动。促进渣膜层中MgO的传质过程,加速MgO材料的侵蚀,从而引起MgO材料在渣-冰钢界面区局部优先侵蚀。
The local priority corrosion of sintered MgO at the interface of molten slag (SiO_2-FeO -CaO)and matte (FeS-Cu_2S)was studied by the crucible method and high temperature X-ray video and radiographic technique. Combined with the SEM analysis, it is found that a dense film of(Fe, Mg) O is formed on the surface of MgO. A slag film is formed near (Fe, Mg) O, through which the corrosion is controlled by the mass transfer of MgO. Variation of interfacial tension of slag film-crucible and slag film-matte induces the movement of slag film, which enhances the mass transfer of MgO in the slag film and results in the local priority corrosion of MgO at the interface of slag and matte.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
1993年第5期482-486,共5页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金
关键词
氧化镁
耐火材料
界面
侵蚀
magnesium oxide
refractory
slag
matte
interface
local corrosion
