Size-dependent Youngs modulus of the FCC metallic films
Youngs modulus is one of the most fundamental parameter to depict the elasticity of a given material.It determines the basic elastic deformation capacity of a structure under a bear load.When the diameter of nanocrystals is in the scale of several nanometers,the Youngs modulus is quite different from that of bulk.In order to determine elastic deformation capacity of nanocrystals,it is necessary to study thc size dependent Youngs modulus.Based on above consideration,a simple thermodynamic model is developed for size dependent Youngs modulus of nanocrystals according to the universal binding energy curve and Laplace-Young equation.According to this model,the Youngs modulus of several FCC metallic films is predicted and the Youngs modulus increases with the size reduction.The prediction is agreed with computer simulation results.
Youngs modulus Nanocrystalline materials Thin films
M.Li G.H.Su
School of Physics and Electric Information, Huaibei Normal University, Huaibei, 235000, China Department of Material Engineering, Yancheng Institute of Technology, Yancheng 224003, China
国际会议
杭州
英文
76-79
2012-03-23（万方平台首次上网日期，不代表论文的发表时间）