Mg_3N_2粉末稳定性的实验分析(英文)  

Experimental Analysis of the Stability of Mg_3N_2 Powder

作　　者：魏芹芹[1] 何建廷[1] 薛成山[2] 

机构地区：[1]山东理工大学电气与电子工程学院,山东淄博255049 [2]山东师范大学物理与电子科学学院,济南250014

出　　处：《微纳电子技术》2014年第7期429-433,共5页Micronanoelectronic Technology

基　　金：National Natural Science Foundation of China(61076069)

摘　　要：稳定性是Mg3N2粉末的一个重要特性。研究了利用镁粉与氨气直接反应法在最佳条件下制备的Mg3N2粉末的稳定性,包括热稳定性、在氧气中的抗氧化性以及在空气中的稳定性。用X射线衍射(XRD)和傅里叶变换红外光谱(FTIR)对样品在设置条件下的变化进行了分析,结果表明用该方法制备的Mg3N2粉末具有非常好的热稳定性,在1 100℃下都不会分解;在低于800℃下,Mg3N2粉末表现出很好的抗氧化性能,在高于800℃时其直接被氧化为氧化镁粉末。通过对Mg3N2粉末在空气中的稳定性的研究,提出并利用三维水驱动扩散模型很好地描述并解释了Mg3N2在空气中变质的过程。The stability is one of the most important properties of Mg3N2 powder. The stabilities of Mg3N2 powder prepared by the direct reaction method with magnesium powder and ammonia gas were researched under the best conditions, including the thermal stability, the oxidation re sistance in the oxygen and the stability in air. The changes of the sample under the setting condi tion were analyzed by X-ray diffraction （XRD） and Fourier transform infrared spectroscopy （FT- IR）. The results show that the Mg3N2 powder has an excellent thermal stability and cannot be decomposed below 1 100 ℃. The Mg3N2 powder shows a good oxidation resistance below 800 ℃ and is directly oxidized to magnesium oxide power above 800 ℃. Through the study on the stability of Mg3N2 powder in air, the model of the 3-dimensional diffusion driven by water was proposed to describe and explain the metamorphic process of Mg3N2 powder in air.

关 键 词：氮化镁 热稳定性 抗氧化性 X射线衍射(XRD) 傅里叶变换红外光谱(FTIR) 

分 类 号：TB34[一般工业技术—材料科学与工程]