大学化学 >> 2024, Vol. 39 >> Issue (1): 185-190.doi: 10.3866/PKU.DXHX202306024

化学实验 上一篇    下一篇

化学自主设计实验的探索与实践——以TiCN基合金中N含量测定为例

何英(), 李青   

  • 收稿日期:2023-06-07 录用日期:2023-08-07 发布日期:2023-08-14
  • 通讯作者: 何英 E-mail:493283561@qq.com
  • 基金资助:
    2022年湖南省普通高等学校教学改革研究项目(HNJG-2022-0833)

Exploration and Practice of Self-Design Experiments in Chemical Experiment: Determination of Nitrogen Content in TiCN-Based Alloys

Ying He(), Qing Li   

  • Received:2023-06-07 Accepted:2023-08-07 Published:2023-08-14
  • Contact: Ying He E-mail:493283561@qq.com

摘要:

不同于大学低年级的基础化学实验课,高年级开设自主设计实验,侧重于独立思考、主动探索。以“TiCN基合金中N含量测定”为例,介绍自主设计实验全过程,包含自选题目、设计方案、固体样品的消解、待测物质的提取、分析测试、数据处理与评估,将理论知识引入到实际问题中,用实验手段将两者深度融合,提高了学生判断思维、解决问题的能力以及综合素质。

关键词: 自主设计, TiCN基合金, N含量, 化学实验

Abstract:

Different from the basic chemistry experiment course in the lower grades of the university, the higher grades offer self-designed experiments, focusing on independent thinking and active exploration. Taking the "determination of N content in TiCN-based alloys" as an example, this paper introduces the whole process of self-designed experiments, including the digestion of solid samples, the extraction of substances to be measured, analysis and testing, data processing and evaluation, and introduces theoretical knowledge into practical problems, and uses experimental methods to deeply integrate the two, improving students' ability to judge, solve problems and comprehensive quality.

Key words: Self-designed, TiCN- based alloys, Nitrogen content, Chemical experiment