自蔓延法制备金属复合管内衬层组织性能的研究  

Investigation of properties and microstructures of ceramic lined of pipe produced by SHS

作　　者：赵金龙[1] 李书江[1] 周文龙 高钦 

机构地区：[1]大连理工大学铸造工程研究中心

出　　处：《大连理工大学学报》1997年第3期290-294,共5页Journal of Dalian University of Technology

基　　金：国家自然科学基金

摘　　要：在离心力的作用下，采用自蔓延高温合成技术（ＳＨＳ）制备复合金属管，研究添加剂对内衬层致密度、显微结构和显微硬度的影响．实验得出，反应物中加入添加剂，内衬层的显微结构不同，陶瓷晶粒呈柱状晶或等轴晶，并且内衬层显微硬度两相不均．通过增加离心力或添加能延长熔融期的添加剂，可改善内衬层的致密度，减少气孔．The ceramic lined pipe has been produced by centrifugal process of self propagating & high temperature synthesis(SHS). The effects of the diluents on density, microstructure and hardness of ceramic lined are investigated. The results show that the microstructure and hardness of ceramic lined are different and the grains are of cylinder or axialite with adding of different diluents. The density and porosity are improved by increasing the centrifugal force or by expanding the cooling time with adding diluents.

关 键 词：金属管 内衬 自蔓延高温合成 显微结构 陶瓷内衬 

分 类 号：TG174.453[金属学及工艺—金属表面处理]