Thermodynamic study on elimination of platinum inclusions in phosphate laser glasses for inertial confinement fusion applications

作     者：Qinyuan Zhang Lili Hu Zhonghong Jiang 

作者机构：Chinese Acad Sci Shanghai Inst Opt & Fine Mech Shanghai 201800 Peoples R China 

出 版 物：《Chinese Science Bulletin》 (科学通报(英文版))

年 卷 期：1999年第44卷第7期

页      面：664-668页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：thermodynamics phosphate laser glass platinum inclusions. 

摘      要：A new method to calculate the formation enthalpies and free energies of compounds based on standard electromotive force of cation,φ0, and free energies of formation, ΔG2980, or formation enthalpies, ΔH2980, of chloride was proposed. A linear relationship between φ0 and ΔG2980, φ0 and ΔH2980, and ΔG2980 and ΔH2980 was found respectively. The parameters used for thermodynamic calculation were calculated. The calculated values of the formation enthalpies and the free energies of formation of platinum compounds, such as Pt3（PO4）2 and Pt （PO3）2,were given for the first time. The mechanism of eliminating platinum inclusions in phosphate laser glass by POCI3 gas bubbling was interpreted from thermodynamic aspect.