铜和铁的表面张力计算模型  

A Calculating Model for the Surface Tension of Cu & Fe

作　　者：范崇正[1,2] 吴佑实[1,2] 

机构地区：[1]中国科学技术大学 [2]山东工业大学

出　　处：《中国科学技术大学学报》1996年第4期409-415,共7页JUSTC

摘　　要：以作者建立的原子－晶格相互作用模型（ＩＡＣＭ）对金属铜和铁的表面原子能态进行分析，计算表面原子键焓，进而得到晶体表面（超额）焓的经验公式．应用于表面张力、摩尔熔化热及固－液表面焓的计算，其结果与实验值接近．同时可得出在某些温度区段内，金属表面张力随温度升高而减小；在另一些温度区段内，则随温度升高而增大．这与实验事实相符。A Model of interaction between atom and crystal (IACM) was established and applied to the analysis of the atom energy level on the crystal surface. experiential equations were used to calcuate the surface extra enthalpy, the surface energy of liquid metal, the interface energy of liquid-solid,and the latent heat of phase change for Cu and Fe. The results agree with the experiments very well. Furthermore, the abnormal phenomena of the surface tensison for some metals, which increase with temperature rising, can also be explained by this calculating model.

关 键 词：IACM模型 表面张力 铜 铁 计算模型 

分 类 号：TG146.11[一般工业技术—材料科学与工程] TG141[金属学及工艺—金属材料]