Improvement of the Experiment on Pb-Sn Binary Alloy Phase Diagram
CHEN Xian-Lan1,2, ZHANG Guo-Wei1, LIU Wei1,2, LIU Gui-Yang1,2, XIAO Rui-Min1, LI Zi-Jing1,2, HUANG Zhao-Long1,2
1. School of Science, Honghe University, Mengzi 661100, China;
2. Key Laboratory of Natural Pharmaceutics & Chemical Biology of Yunnan Province, Mengzi 661100, China
Abstract The binary alloy phase diagram is drawn through thermal analysis in most physical chemistry experiment textbooks, where graphite is used as antioxidant to prevent tin-lead from being oxidized. However, there are some defects in this experiment. The defects are analyzed from the perspective of thermodynamic theory, and graphite is replaced with rosin to prevent tin-lead from being oxidized. Through analyzing the whole experimental process, the improved method of the experiment and its results are introduced in this paper.
CHEN Xian-Lan, ZHANG Guo-Wei, LIU Wei, LIU Gui-Yang, XIAO Rui-Min, LI Zi-Jing, HUANG Zhao-Long. Improvement of the Experiment on Pb-Sn Binary Alloy Phase Diagram[J]. Chinese Journal of Chemical Education, 2014, 35(6): 32-34.
