物理化学学报 >> 1991, Vol. 7 >> Issue (01): 97-101.doi: 10.3866/PKU.WHXB19910116

研究论文 上一篇    下一篇

铁-镍-钒三元系固态合金的量热研究——双子、差示、高温量热计

程述武; 彭鸣; 范民   

  1. 北京科技大学化学系
  • 收稿日期:1989-07-26 修回日期:1990-08-15 发布日期:1991-02-15
  • 通讯作者: 彭鸣

The Calorimetric Study of Fe-Ni-V Solid Alloy Systems

Cheng Shu-Wu; Peng Ming; Fan Min   

  1. Department of Chemistry, University of Science and Technology, Beijing
  • Received:1989-07-26 Revised:1990-08-15 Published:1991-02-15
  • Contact: Peng Ming

摘要: 本文介绍一种自制双子、差示、高温量热计, 此仪器用于测量固态合金的生成焓和相变焓。最高工作温度可达1200 ℃。通过测定已知焓值的纯铁的相变焓, 证明量热计可靠。用这台量热计测量了8种不同成份的Fe-Ni-V固态合金的生成焓, 其中包含σ相和γ相。为该体系的热力学研究提供了必要的热化学数据。

关键词: 固态合金, 生成焓, 相变焓, 高温量热计

Abstract: A twin, differential, high-temperature calorimeter for the measuremens of enthalpies of formation and transformation in solid alloys has been developed. This apparatus works at temperature up to 1500 K. Its sensitivity and reliability are proved by measuring the heats of transformation of α-to γ-phase in iron. The experimental results are in considerable agreement with those in the published literature.
The calorimeter was used to determine the heats of formation of eight alloy compositions, comprising of σ-and γ-phase, of Fe-Ni-V system. These data have not been measured before. The results show that the enthalpies of Fe-Ni-V solid alloys are negative and tend to decrease generally while the composition of alloy varies from Fe-V side to Ni-V side.

Key words: Solid alloy, Enthalpies of formation, Enthalpies of transformation, High-temperature Calorimeter