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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：研究生院常务副院长
其他任职：辽宁省凝固控制与数字化制备技术重点实验室主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：材料科学与工程学院
学科：材料加工工程
办公地点：研究生院；材料科学与工程学院
联系方式：tmwang@dlut.edu.cn
电子邮箱：tmwang@dlut.edu.cn
The thermal stability and microwave electromagnetic properties of Mn4N
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论文类型：期刊论文
发表时间：2015-09-01
发表刊物：APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
收录刊物：SCIE、EI、Scopus
卷号：120
期号：3
页面范围：1075-1081
ISSN号：0947-8396
摘要：Microsized Mn4N powders have been prepared via a convenient route by the reaction of pure electrolytic manganese powder and ammonia in a tube furnace at 900 A degrees C. The microstructure, morphology, thermal stability, magnetism as well as electromagnetic properties were characterized by powder X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, vibrating sample magnetometer and vector network analyzer. The enhanced relative complex permeability, complex permittivity and static magnetic were achieved when compared with pure manganese. Moreover, Mn4N had good thermal stability and oxidation resistance below 300 A degrees C in air. A possible mechanism of the improved properties of Mn4N was discussed based on first-principles calculations. The results revealed that Mn4N could be a potential microwave absorbent.