γ‘—Fe4N制备的穆斯堡尔谱研究  

M o¨ ssbauer Study of the Preparation of γ′ Fe 4N

作　　者：薛德胜[1] 陈子瑜[1] 

机构地区：[1]兰州大学物理系

出　　处：《兰州大学学报（自然科学版）》1996年第1期49-52,共4页Journal of Lanzhou University(Natural Sciences)

基　　金：兰州大学科研处,国家教委博士点基金,甘肃省自然科学基金,国家自然科学基金

摘　　要：在ＮＨ３／Ｈ２气氛下热处理草酸亚铁的结果表明氮化物的形成和氮化物间的相转变是有条件的。在众多的影响产物的工艺因素中，热处理温度和ＮＨ３／Ｈ２的气流比是影响γ］－Ｆｅ４Ｎ形成的两个最关键因素。为了获得单相的γ＇－Ｆｅ４Ｎ，除热处理温度要在５５０－６５０℃附近外，ＮＨ３／Ｈ２的比最好应小于１：１。FeC 2O 4·2H 2O heat treated in NH 3/H 2 atomosphere indicates that the formation of nitrides and the phase transition of the nitrides take place under certain conditions. Among various technological conditionis which affect the final products, the heat treatment temperature and the ratio of NH 3/H 2 are the key factors which affect the formation of γ′ Fe 4N. In order to obtain the single phase γ′ Fe 4N, the heat treatment temperature should be in the range of 550℃～650℃. At the same time, the ratio of NH 3/H 2 should be less than 1∶1.

关 键 词：γ'-Fe4N 穆斯堡尔光谱学 热处理 磁记录介质 

分 类 号：TQ586.1[化学工程—精细化工]