(北京工业大学九系，北京100022；*上海宝山钢铁(集团)公司冷轧厂，上海200941)
摘 要: 对离心SHS(Self-propatating High-temperature Synthesis自蔓延高温合成)陶瓷衬管的铁过渡层组织结构及性能研究发现，铁过渡层与陶瓷层为“抛锚”结合，过渡层与基体层为冶金结合。对铁过渡层进行SEM、TEM及DEAX分析发现，Fe层中残存有未分离的陶瓷粒子，具有较高的位错密度及发达的亚晶组织，且发现了少量的索氏体和屈氏体组织，认为这是由于钢基体中的碳渗透到铁层中引起的。这些都是造成铁过渡层硬度较高甚至超过钢基体的原因。
关键字: 自蔓延高温合成 陶瓷衬管 铁过渡层 显微组织
（Department of Materials Science and Engineering,Beijing Polytechnic University,Bei jing 100022* Cold Rolling Mill Plant,Baoshan Iron and Steel Corp,Shanghai 200941）
Abstract:Investigation on the microstructure and properties of the ceramic-lined pipe shows that steel sub-strate joins metallurgically with Fe transition layer，which joins with ceramic layer by way of "drop anchor", so the bonding strength is high. There exist unsegregated ceramic particles,relatively high dislocation density,devel-oped subcrystal,a small amount of sorbite and troostite in the transition layer. Sorbite and troostite result from the penetration of carbon in steel substrate to Fe layer.
Key words: ceramic-lined SHS Fe transition layer microstructure
