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Atomic-Scale Structural Origin of Reverse Relationship Between Hardness and Glass Transition Temperature of Peraluminous Aluminosilicate Glasses with Alkaline Earth Ions
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Zhentao WANG, Shaoxuan GU, Zhisong DING, Haizheng TAO
Journal of the Chinese Ceramic Society | 2022, 50(4) : 879 - 885
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Journal of the Chinese Ceramic Society | 2022, 50(4): 879-885
• Research Articles •
Atomic-Scale Structural Origin of Reverse Relationship Between Hardness and Glass Transition Temperature of Peraluminous Aluminosilicate Glasses with Alkaline Earth Ions
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Zhentao WANG, Shaoxuan GU, Zhisong DING, Haizheng TAO
Affiliations
  • State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China

    • WANG Zhentao (1997-), male, Master candidate. E-mail:

About Author:

WANG Zhentao (1997-), male, Master candidate. E-mail:

Published: 2022-04-20 doi: 10.14062/j.issn.0454-5648.20211079
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To investigate the atomic-scale structural origin of the Vickers hardness (HV) and glass transition temperature (Tg) of peraluminous aluminosilicate glasses with alkaline earth ions, we prepared a series of xRO·(49-x)Al2O3·51SiO2 (x=0.0-16.0, in mole fraction; R=Mg, Ca, Sr, Ba) alkaline earth aluminosilicate glassy samples. HV and Tg were characterized by Vickers micro-hardness test and differential scanning calorimetry (DSC). The results show that HV increases, while Tg decreases with the increase of R2+ field strength at a fixed RO content. At a certain type of RO, HV and Tg decrease simultaneously with the gradual substitution of Al2O3 by RO. 49Al2O3·51SiO2 glass has the maximum HV (i.e., 8.26 GPa) and Tg (i.e., 941 ℃). According to the structural analysis, the interactions between the competition and synergism among the packing density, average bond energy, bond energy density of glass network skeleton ions and the interstitial ions as a charge balancer are a main atomic-scale structural origin, thus leading to the reverse evolution of HV and Tg with the increase of field strength of substituted R2+ and the similar change with the substitution of RO for Al2O3 in peraluminous aluminosilicate glasses.

aluminosilicate glass  /  peraluminous field  /  glass transition temperature  /  hardness  /  charge balancer  /  field strength  /  packing density
王振涛, 顾少轩, 丁志松, 陶海征. 碱土替换铝硅酸盐玻璃硬度和玻璃转变温度反向演化的结构起源. 硅酸盐学报, 2022 , 50 (4) : 879 -885 . DOI: 10.14062/j.issn.0454-5648.20211079
Zhentao WANG, Shaoxuan GU, Zhisong DING, Haizheng TAO. Atomic-Scale Structural Origin of Reverse Relationship Between Hardness and Glass Transition Temperature of Peraluminous Aluminosilicate Glasses with Alkaline Earth Ions[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (4) : 879 -885 . DOI: 10.14062/j.issn.0454-5648.20211079
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Year 2022 volume 50 Issue 4
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Article Info
doi: 10.14062/j.issn.0454-5648.20211079
  • Receive Date：2021-12-12
  • Online Date：2026-10-22
  • Published：2022-04-20
Article Data
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History
  • Received：2021-12-12
  • Revised：2022-01-03
Funding
Affiliations
    State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China

Corresponding:

TAO Haizheng (1973-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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