固气反应制备铁氮化合物  

Preparation of Fe-N Compounds Through Solid-Gas Reac tion

作　　者：连法增[1] 周桂琴[1] 周登勇[1] 李义尧 孙伟[1] 

机构地区：[1]东北大学,辽宁省分析测试研究中心

出　　处：《东北大学学报（自然科学版）》1995年第4期398-401,共4页Journal of Northeastern University(Natural Science)

基　　金：冶金部重点科技攻关项目

摘　　要：研究了铁氮化合物的制备方法及其结构与性能．利用粒度为２０μｍ铁粉和ＮＨ３／Ｈ２进行固气反应．研究了淬火介质对固气反应产物的结构和性能的影响．结果表明，冰水淬火可获得几乎全是奥氏体的粉末，而干冰和液氮淬火可获得氮马氏体．于１５０℃回火可制备出含Ｆｅ１６Ｎ２的氮化物粉末．于５４０～５９０℃进行固气反应可获得单质、均匀的Ｆｅ４Ｎ化合物粉末，其磁化强度为１９０Ａｍ２／ｋｇ．The preparation,structure and properties of Fe-N compounds were investigated. A solid-gasreaction was conducted using iron powder with NH3/H2 gas. The effects of different quenching media on thestructures and properties of reaction products were studied. The results showed that ice-water quenching almost entirely result in N-austenite powder and that N-martensite is available through the quenching with dry ice and liquid nitrogen. Fe16 Ni2-bearing nitride POwder can be obtained through tempering at 150 C. Also,apure and homogeneous Fe2N powder is available through the solid-gas reaction at 540-590 C with a magne tizability up to 190 Am2/kg.

关 键 词：固气反应 淬火介质 奥氏体 铁氮化合物 

分 类 号：TG154.4[金属学及工艺—热处理]