A General Approach for the Extension of Topological Analysis Theory of Phase Diagrams

• 作 者: HUJiawen[1]YUYangxin[2]
• 机 构: College of Resources,Shijiazhuang University of Economics,Shijiazhuang,050031,China Department of Ch
• 出 处: 第五届全国化工年会
• 发表日期: 2008年期

A simple but general phase rule is derived by categorizing the various phases and components in terms of their thermodynamic properties and roles. According to this phase rule，the topological analysis theory developed from P-T phase diagrams can be extended to various phase diagrams，including those in which at least one coordinate variable is a thermodynamic property，such as composition，concentration，activity，fugacity，partial pressure，chemical potential，etc. Despite of the great difference in the topology and coordinate variables of phase diagram and in the properties of phases and components，the theoretical extension above is realized through a simple but general approach.