Anisotropic Mechanical and Thermal Properties of Nd2SrAl2O7

摘要：

　　For a long time since the anisotropy basically confined to a single crystal,used as a polycrystalline ceramic materials generally considered to be isotropic.In this paper,the anisotropic mechanical,thermal expansion coefficient and thermal conductivity of a double perovskite slab-rocksalt layer Nd2SrAl2O7 was studied by first principles as an example.The method is using density functional theory (DFT) and crystal parameters,which has been used to calculate the modulus of elasticity of anisotropic in a three-dimensional space.While combined with traditional thermal conductivity theory,we have obtained the tensor of thermal diffusion,thermal conductivity in 3D space for the first time in the world within no.The results are in good agreement with the experiment.The advantage of method is avoiding the difficulty of experimental measurement,reducing the time and obtaining relatively accurate results.

关键词： Ceramics Thermal expansion Elastic modulus Thermal conductivity

作者: J.Feng Z.C.Huang R.Zhou W.Pan

作者单位: Department of Materials Science and Engineering,Kunming University of Science and Technology,Kunming State Key Laboratory of New Ceramics and Fine Processing,Department of Materials Science and Enginee Department of Materials Science and Engineering,Kunming University of Science and Technology,Kunming

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 975-979

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）