摘要
采用自蔓延高温合成技术在钢管内制备陶瓷涂层,并对涂层的组织和性能进行了分析。结果表明:涂层从内到外依次为刚玉陶瓷层和以铁为主的过渡层,涂层的显微组织呈枝晶状结构,白色相为Al2O3,黑色部分主要为Fe和Fe、Al合成相;涂层的断口为层片状结构,层片界面有气孔或裂纹;断口较平坦,呈解理台阶,为脆性断裂;涂层结合强度高,耐冲蚀性能优良。
The ceramic coating was prepared in the steel tube by self-propagating high-temperature synthesis technique. The microstructure and properties of the coating were analyzed. The results show that the coating is orderly corundum ceramic layer and intermediate layer with iron mainly from inside to outside. The microscopic structures of the coating are branch crystalline structure; the white phase is Al2O3 and the black phase is Fe and the synthesis phase of Fe and AI. The fracture of the coating is laminated structure; and there are stomata or crack in the sheet layers interface. The fracture is flat, cleavage steps, and brittle fracture. The bonding strength of the coating is high and the impact corrosion performance is excellent.
出处
《热加工工艺》
CSCD
北大核心
2012年第2期146-148,共3页
Hot Working Technology
关键词
陶瓷内衬涂层
显微组织
性能
ceramic-lined coating
microscopic structures
performance
