SHS离心复合钢管陶瓷内衬的组织结构  

THE MICROSTRUCTURE OF CERAMIC LINING OF COMPOSITE PIPE MADE BY SHS CENTRIFUGAL PROCESS

作　　者：袁晓敏[1] 程广萍[1] 何宜柱[1] 

机构地区：[1]安徽工业大学冶金与材料学院,马鞍山243002

出　　处：《理化检验（物理分册）》2002年第3期93-95,98,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：安徽省教育厅资助课题 (2 0 0 0 j1184)

摘　　要：采用自蔓延高温合成技术离心法制备Al2 O3陶瓷内衬复合钢管。利用扫描电镜及X射线衍射方法对陶瓷内衬的显微组织及物相构成进行了分析。结果表明 ,陶瓷内衬复合钢管由钢管层、金属铁和陶瓷组成的过渡层以及陶瓷层共三层构成 ,其中钢管与铁过渡层之间为机械结合 ,铁过渡层与陶瓷层之间形成冶金结合。陶瓷层组织由垂直管壁生长的α Al2 O3柱状晶和沿其晶间分布的FeO·Al2 O3铁铝尖晶石相以及少量FeO·Al2 O3·SiO2 玻璃相构成 ,玻璃相分布于铁铝尖晶石的晶界并将其包围起来 ,这种结构有利于减轻铁铝尖晶石对复合管内衬抗腐蚀性的不良影响。The ceramic lined steel pipes were made by SHS centrifugal process. The microstructure and phase constituent in ceramic layer were investigated by SEM and X ray diffraction. The results showed that the ceramic lined pipe was composed of three layers, including the inner ceramic layer, the transition iron layer and the outer steel pipe, of which the bonding of the former two layers was mainly metallurgical while that of the latter two layers was mechanical. The ceramic layer was composed of columnar α Al 2O 3, irregular FeO·Al 2O 3 and FeO·Al 2O 3·SiO 2, with the FeO·Al 2O 3 locating between the columns of Al 2O 3, while the FeO·Al 2O 3·SiO 2 locating through the boundary of FeO·Al 2O 3. The distribution of FeO·Al 2O 3·SiO 2 was beneficial for better corrosion resistance.

关 键 词：SHS离心复合钢管 陶瓷内衬 自蔓延高温合成技术 离心法 显微组织 结构特点 管道输运材料 

分 类 号：U174[交通运输工程] TB33[一般工业技术—材料科学与工程]