论文部分内容阅读
在分析已有的热力学数据基础上,建立了估算二元金属间化合物标准熵的双参数模型.用此模型可估算由简单金属形成的二元金属间化合物的标准熵,涉及Fe、Si、Nb、Ti、Cu、Co和Mg等多个体系.估算了132个已知金属间化合物AlCa、AlCo、CrNi、FeTi、FeSi、FeNb和MoSi等的标准熵,平均误差为4.86 J.mol-1.K-1,标准差为6.24 J.mol-1.K-1.用双参数模型估算的标准熵精度高,其估算误差小于离子束缚模型.
Based on the analysis of the existing thermodynamic data, a two-parameter model for estimating the standard entropy of the binary intermetallic compound is established, which can be used to estimate the standard entropy of the binary intermetallic compounds formed from simple metals involving Fe, Si, Nb , Ti, Cu, Co and Mg, etc. The standard entropy of 132 known intermetallic compounds such as AlCa, AlCo, CrNi, FeTi, FeSi, FeNb and MoSi was estimated with an average error of 4.86 J.mol-1. K-1, the standard deviation is 6.24 J.mol-1.K-1. The standard entropy estimated by the two-parameter model has high accuracy and the estimation error is smaller than that of ion-bound model.