Si基二元共晶合金的电子化学势均衡

Electrochemical Potential Equilibrium of Si-based Binary Eutectic Alloy

以第一近邻团簇作为基本结构单元,研究Si基二元共晶合金成分的形成规律,建立了分析Si基二元共晶合金成分的电子化学势均衡判据。给出描述Si基二元共晶合金成分的分子式,即Si基二元共晶合金成分=[团簇]1(连接原子)x。应用该判据给出的分子式,解释了实验上得到的部分Si基二元共晶合金成分。通过对SiAl、SiAu、SiCe、SiCo、SiCr、SiCu、SiFe、SiGd、SiHf、SiLi、SiMn、SiMo、SiNb、SiNi、SiOs、SiPd、SiRe、SiRh、SiRu、SiSc、SiTa、SiTh、SiTi、SiW、Si Y和SiZr等典型Si基二元共晶合金成分的分析研究,得到的设计成分与实验成分相比较,偏差均小于2个原子百分比。这说明该判据解释了部分Si基二元共晶合金成分的形成规律。

The forming regularity of Si-based binary eutectic alloy composition was studied based on the basic structural unit of first neighbor clusters. Si-based binary eutectic alloy composition was analyzed by establishing the electrochemical potential equilibrium criterion. A description of Si-based binary eutectic alloy composition empirical formula is given, that is, Si-based binary eutectic alloy component=[clusters]l （glue atoms）,. The formula given by the criterion can explain some of the alloy composition obtained through the experiment effectively. Some typical binary eutectic Si-based alloy composition such as SiAl, SiAu, SiCe, SiCo, SiCr, SiCu, SiFe, SiGd, SiHf, SiLi, SiMn, SiMo, SiNb, SiNi, SiOs, SiPd, SiRe, SiRh, SiRu, SiSc, SiTa, SiTh, SiTi, SiW, SlY, SiZr, was analyzed by comparing the designed component with the experiment component. The deviations are less than 2 atomic percent. Indicating that the criterion can explain the part of Si-based binary eutectic alloy composition formation rule.