(1.中南工業(yè)大學(xué)材料科學(xué)與工程系，長沙410083；
2.廣州工學(xué)院材料系，廣州510090；
3.清華大學(xué)材料科學(xué)與工程系，北京100084)
摘 要: 用兩種X射線衍射法確定了金屬間化合物Ni3Al的德拜溫度ΘD為550 K并利用新發(fā)展的“固體中多原子相互作用的新勢能函數(shù)”和測定的Ni3Al合金的德拜溫度，計(jì)算了Ni3Al合金的結(jié)合能、形成熱、體彈性模量以及比熱和線熱膨脹系數(shù)隨溫度變化的曲線。
關(guān)鍵字: Ni3Al X射線衍射 德拜溫度 物理性質(zhì)
PHYSICAL PROPERTIES OF Ni3Al
（Department of Materials Science and Engineering,
Central South University of Technology, Changsha 410083）
Abstract:The Debye temperature(ΘD)of intermetallic compound Ni3Al has been determined as 550 K by two X-Ray diffraction ways. The cohesive energy, formation heat, bulk modulus of elasticity and the curve of specific heat and linear coefficient of thermal expansion as a function of temperature have been calculated, using the new ly developed potential function of interactions of many atoms in solids and by measuring Debye temperature of Ni3Al alloy.
Key words: Ni3Al X-Ray diffraction Debye temperature physical properties
