淬冷法研究PbO-SiO₂二元系统相平衡实验设计

Experimental Design for the Investigation of the Equilibrium of PbO-SiO₂ Binary System by Static Quenching Method

摘要: 相图在冶金、化工等工业生产领域及矿物、化学与材料科学研究领域具有重要的指导意义，是解决一些实际问题不可或缺的工具。相平衡及相图是材料类专业的核心专业课程内容之一。在开展课堂理论教学过程中，同步开展相关的实验教学是加深学生对理论知识理解与掌握的重要途径之一，同时也有利于培养学生的工程实践能力。针对当前静态法研究相平衡实验教学存在的组成点单一所致的代表性差、样品量少引起的观察结果与相图时有不符及学生无动手操作机会等问题，本文尝试将传统相平衡实验教学项目设计成为从组成设计、样品制备到显微分析与物相鉴定的全流程设计性实验，为学生创造了多环节动手操作机会，激发了学生积极性，实验教学效果显著提升。

Abstract: Phase diagram is of great significance in both industrial metallurgy, chemical engineering production process and minerals and materials scientific research areas. It is a necessary tool for resolving some practical problems. Equilibrium and phase diagram are essential contents of a core course for materials majors. Experimental teaching accompany with the class teaching is one of the most effective approaches to help students understand theoretical knowledge, and also is beneficial to train the students of their engineering practical ability. Regarding the drawbacks of the present experimental teaching item of equilibrium investigation by static method such as single chemical composition caused bad representativeness, less sample amount resulted adverse consistency with phase diagram and less opportunity for students to operate instruments, this paper intends to develop a designing experiment combined with the conventional phase diagram research experiment with another sample preparation experiment for micro-structure analysis. This designing experiment covers the composition design, sample preparation, micro-structure analysis and phase evaluation procedures. The development and application of this designing experiment provides much more opportunity for students to operate different related machines, stimulate the enthusiasm of students to learn and therefore have improved the experimental teaching effect.