工程科学学报2016，Vol.38Issue(10)：1377-1385,9.DOI:10.13374/j.issn2095-9389.2016.10.005
基于原子和分子共存理论的Al--Ti熔体反应能力表征
Representation of reaction abilities for Al--Ti binary melts based on the atom--molecule coexistence theory
摘要
Abstract
A thermodynamic model is proposed for calculating the mass action concentration of structural units in the Al-Ti binary melt system based on the atom-molecule coexistence theory. The standard equilibrium constants of reactions for forming three associat-ed molecules as Al3 Ti, AlTi, and Al11 Ti5 in the Al-Ti binary melt system at the temperature of 2073 to 2273 K are calculated based on the activity reported in the literature, and the expressions of the standard molar Gibbs free energy change of reactions are obtained. Meanwhile, the calculated mass action concentrations NAl and NTi of Al and Ti are compared with the reported activities of both Al and Ti in the full composition range of the Al-Ti binary melt system at different temperatures from the literature. The results show that the calculated mass action concentrations NAl and NTi are in agreement with the activities aAl and aTi in the reported literature. The relation-ship between the calculated mass action concentration Ni and the calculated equilibrium amount of substance ni of Al3 Ti and Al11 Ti5 in the Al-Ti binary melt system is rod-type. However, the relationship between the calculated mass action concertation NAlTi and the cal-culated equilibrium amount of substance nAlTi in this binary melt system is spindle-type.关键词
二元系/铝/钛/共存理论/质量作用浓度/活度Key words
binary systems/aluminum/titanium/coexistence theory/mass action concentration/activity分类
矿业与冶金引用本文复制引用
段生朝,陈虎兵,郭汉杰,连云飞..基于原子和分子共存理论的Al--Ti熔体反应能力表征[J].工程科学学报,2016,38(10):1377-1385,9.基金项目
国家自然科学基金资助项目(51274031, U1560203) （51274031, U1560203）
