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基于Tg復特征溫度參數(shù)的玻璃形成能力及穩(wěn)定性判定準則
作者:
作者單位:

1.蘭州理工大學 材料科學與工程學院;2.蘭州理工大學 機電工程學院

作者簡介:

通訊作者:

中圖分類號:

TG139+.8

基金項目:

國家自然科學基金(51971103,51861021)；甘肅省重點研發(fā)計劃(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)

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    摘要:

    本文從降溫過程的玻璃形成能力(GFA)和升溫過程的玻璃穩(wěn)定性(GS)出發(fā)，構(gòu)建出基于玻璃轉(zhuǎn)變溫度Tg衍生的復特征溫度參數(shù)三角形，從而推導出判定GFA & GS的準則并從二溫度參數(shù)和三溫度參數(shù)對準則均衡貢獻的角度，進一步對準則進行了修訂：GTg=Tg/Tl+Tx/Tg+(Tx-Tg)/(Tl-Tg)和GTgm=Tg/Tl+(Tx/Tg)/2+((Tx-Tg)/(Tl-Tg))^0.3。通過大量金屬玻璃、氧化物玻璃和有機化合物玻璃形成物從GFA和GS兩方面驗證了準則的可靠性，并與當前基于特征溫度的判定準則進行了對比分析，結(jié)果表明新提出的準則在評判GFA & GS具有廣泛應(yīng)用性，尤其是修訂后的準則在金屬玻璃的GFA和GS判定方面表現(xiàn)最優(yōu)，可以作為一個可靠的準則。

    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.

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李曉誠,寇生中,付小強,李春玲.基于Tg復特征溫度參數(shù)的玻璃形成能力及穩(wěn)定性判定準則[J].稀有金屬材料與工程,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

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  • 收稿日期:2021-06-03
  • 最后修改日期:2021-07-22
  • 錄用日期:2021-08-06
  • 在線發(fā)布日期: 2022-07-06
  • 出版日期: 2022-06-29