+高级检索
基于Tg复特征温度参数的玻璃形成能力及稳定性判定准则
作者:
作者单位:

1.兰州理工大学 材料科学与工程学院;2.兰州理工大学 机电工程学院

作者简介:

通讯作者:

中图分类号:

TG139+.8

基金项目:

国家自然科学基金(51971103,51861021);甘肃省重点研发计划(20YF8GA052)


Glass-Forming Ability and Stability Criterion Based on Complex Characteristic Temperature Parameters Derived from Tg
Author:
Affiliation:

1.School of Materials Science and Engineering,Lanzhou University of Technology;2.School of Mechanical and Electrical Engineering,Lanzhou University of Technology

Fund Project:

National Natural Science Foundation of China (Nos.51971103 and 51861021); Key Research and Development Program of Gansu Province (20YF8GA052)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    本文从降温过程的玻璃形成能力(GFA)和升温过程的玻璃稳定性(GS)出发,构建出基于玻璃转变温度Tg衍生的复特征温度参数三角形,从而推导出判定GFA & GS的准则并从二温度参数和三温度参数对准则均衡贡献的角度,进一步对准则进行了修订:GTg=Tg/Tl+Tx/Tg+(Tx-Tg)/(Tl-Tg)和GTgm=Tg/Tl+(Tx/Tg)/2+((Tx-Tg)/(Tl-Tg))^0.3。通过大量金属玻璃、氧化物玻璃和有机化合物玻璃形成物从GFA和GS两方面验证了准则的可靠性,并与当前基于特征温度的判定准则进行了对比分析,结果表明新提出的准则在评判GFA & GS具有广泛应用性,尤其是修订后的准则在金属玻璃的GFA和GS判定方面表现最优,可以作为一个可靠的准则。

    Abstract:

    In this paper, a triangle of complex characteristic temperature parameters derived from glass transition temperature Tg is constructed from two perspectives of the glass-forming ability (GFA) in cooling process and glass stability (GS) in heating process. According to two complex characteristic temperature parameters, a GFA & GS criterion is derived and modified from the perspective of balanced contribution of two temperature parameters Tg/Tl and Tx/Tg, and the three temperature parameter (Tx-Tg)/(Tl-Tg) to the evaluation criterion: GTg=Tg/Tl+Tx/Tg+(Tx-Tg)/(Tl-Tg) and GTgm=Tg/Tl+(Tx/Tg)/2+((Tx-Tg)/(Tl-Tg))^0.3. Through a large number of metallic glasses, oxide glasses and cryoprotectants, the reliability and efficiency of the criteria are verified and elaborated from GFA and GS in comparison with the current criteria based on characteristic temperatures. The results show that the new criteria have wide application in the evaluation of GFA & GS, especially the modified criterion has the best performance in the evaluation of GFA & GS of metallic glasses, and can be used as a reliable criterion.

    参考文献
    相似文献
    引证文献
引用本文

李晓诚,寇生中,付小强,李春玲.基于Tg复特征温度参数的玻璃形成能力及稳定性判定准则[J].稀有金属材料与工程,2022,51(6):2084~2089.[Li Xiaocheng, Kou Shengzhong, Fu Xiaoqiang, Li Chunling. Glass-Forming Ability and Stability Criterion Based on Complex Characteristic Temperature Parameters Derived from Tg[J]. Rare Metal Materials and Engineering,2022,51(6):2084~2089.]
DOI:10.12442/j. issn.1002-185X.20210491

复制
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-06-03
  • 最后修改日期:2021-07-22
  • 录用日期:2021-08-06
  • 在线发布日期: 2022-07-06
  • 出版日期: 2022-06-29