{"title":"成分对氧化镁-Al2O3-二氧化硅三元玻璃结构和性质的影响","authors":"Yadong Lu, Jun Xie, Yunlan Guo, Chao Liu","doi":"10.1134/S1087659623600242","DOIUrl":null,"url":null,"abstract":"<p>MgO–Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub> (MAS) glass has widespread applications due to the excellent chemical stability and mechanical strength. Accommodation of macroscopic properties requires a systematic investigation of the microstructure of glass caused by compositional adjustment. In this work, effects of progressive replacement of MgO by Al<sub>2</sub>O<sub>3</sub> or SiO<sub>2</sub> on glass structure and Vickers hardness were investigated. With the replacement of MgO by Al<sub>2</sub>O<sub>3</sub> or SiO<sub>2</sub>, the glass network was strengthened, as a result, the glass transition temperature was increased and the crystallization tendency was weakened. The degree of structural changes caused by substitution of SiO<sub>2</sub> for MgO is more significant than that of Al<sub>2</sub>O<sub>3</sub> substitute for MgO. The strengthened glass network promotes the increase of Vickers hardness, and the coefficient of thermal expansion can be tailored in a large range. The results show that MAS glass maybe useful in the field of glass substrates for TFT–LCDs.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"49 6","pages":"573 - 583"},"PeriodicalIF":0.8000,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Compositional Effect on the Structure and Properties of MgO–Al2O3–SiO2 Ternary Glasses\",\"authors\":\"Yadong Lu, Jun Xie, Yunlan Guo, Chao Liu\",\"doi\":\"10.1134/S1087659623600242\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>MgO–Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub> (MAS) glass has widespread applications due to the excellent chemical stability and mechanical strength. Accommodation of macroscopic properties requires a systematic investigation of the microstructure of glass caused by compositional adjustment. In this work, effects of progressive replacement of MgO by Al<sub>2</sub>O<sub>3</sub> or SiO<sub>2</sub> on glass structure and Vickers hardness were investigated. With the replacement of MgO by Al<sub>2</sub>O<sub>3</sub> or SiO<sub>2</sub>, the glass network was strengthened, as a result, the glass transition temperature was increased and the crystallization tendency was weakened. The degree of structural changes caused by substitution of SiO<sub>2</sub> for MgO is more significant than that of Al<sub>2</sub>O<sub>3</sub> substitute for MgO. The strengthened glass network promotes the increase of Vickers hardness, and the coefficient of thermal expansion can be tailored in a large range. The results show that MAS glass maybe useful in the field of glass substrates for TFT–LCDs.</p>\",\"PeriodicalId\":580,\"journal\":{\"name\":\"Glass Physics and Chemistry\",\"volume\":\"49 6\",\"pages\":\"573 - 583\"},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2023-12-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Glass Physics and Chemistry\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1087659623600242\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Glass Physics and Chemistry","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1087659623600242","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Compositional Effect on the Structure and Properties of MgO–Al2O3–SiO2 Ternary Glasses
MgO–Al2O3–SiO2 (MAS) glass has widespread applications due to the excellent chemical stability and mechanical strength. Accommodation of macroscopic properties requires a systematic investigation of the microstructure of glass caused by compositional adjustment. In this work, effects of progressive replacement of MgO by Al2O3 or SiO2 on glass structure and Vickers hardness were investigated. With the replacement of MgO by Al2O3 or SiO2, the glass network was strengthened, as a result, the glass transition temperature was increased and the crystallization tendency was weakened. The degree of structural changes caused by substitution of SiO2 for MgO is more significant than that of Al2O3 substitute for MgO. The strengthened glass network promotes the increase of Vickers hardness, and the coefficient of thermal expansion can be tailored in a large range. The results show that MAS glass maybe useful in the field of glass substrates for TFT–LCDs.
期刊介绍：
Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.
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