A. A. Khokhryakov, M. A. Samoylova, V. V. Ryabov, L. B. Vedmid’, S. Yu. Mel’chakov
{"title":"硼钾k20 - b2o3熔体粘度、自由活化能和玻璃化转变温度","authors":"A. A. Khokhryakov, M. A. Samoylova, V. V. Ryabov, L. B. Vedmid’, S. Yu. Mel’chakov","doi":"10.1134/S1087659623600102","DOIUrl":null,"url":null,"abstract":"<p>The viscosity of potassium–boron melts is measured in the temperature range 918–1699 K using a vibrational viscosimeter. The content of potassium oxide is varied from 0.74 to 28.46 mol %. The parameters of the viscous flow in melts (the configuration–activation energy(ε<sub>h</sub>) and the shifting energy of the bridging oxygen atoms’ bonds (U<sub>∞</sub>)) using the configuration–activation model are calculated for two temperature intervals 918–1400 K and 1400–1699 K. The glass transition temperature (<i>T</i><sub>g</sub>) is measured by differential scanning calorimetry (DSC) and the concentration dependence of the glass transition temperature on the content of potassium oxide in the melt is shown.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"49 3","pages":"239 - 244"},"PeriodicalIF":0.8000,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Viscosity, Free Activation Energy, and Glass Transition Temperature of Potassium Boron K2O–B2O3 Melts\",\"authors\":\"A. A. Khokhryakov, M. A. Samoylova, V. V. Ryabov, L. B. Vedmid’, S. Yu. Mel’chakov\",\"doi\":\"10.1134/S1087659623600102\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The viscosity of potassium–boron melts is measured in the temperature range 918–1699 K using a vibrational viscosimeter. The content of potassium oxide is varied from 0.74 to 28.46 mol %. The parameters of the viscous flow in melts (the configuration–activation energy(ε<sub>h</sub>) and the shifting energy of the bridging oxygen atoms’ bonds (U<sub>∞</sub>)) using the configuration–activation model are calculated for two temperature intervals 918–1400 K and 1400–1699 K. The glass transition temperature (<i>T</i><sub>g</sub>) is measured by differential scanning calorimetry (DSC) and the concentration dependence of the glass transition temperature on the content of potassium oxide in the melt is shown.</p>\",\"PeriodicalId\":580,\"journal\":{\"name\":\"Glass Physics and Chemistry\",\"volume\":\"49 3\",\"pages\":\"239 - 244\"},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2023-07-01\",\"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/S1087659623600102\",\"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/S1087659623600102","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}
Viscosity, Free Activation Energy, and Glass Transition Temperature of Potassium Boron K2O–B2O3 Melts
The viscosity of potassium–boron melts is measured in the temperature range 918–1699 K using a vibrational viscosimeter. The content of potassium oxide is varied from 0.74 to 28.46 mol %. The parameters of the viscous flow in melts (the configuration–activation energy(εh) and the shifting energy of the bridging oxygen atoms’ bonds (U∞)) using the configuration–activation model are calculated for two temperature intervals 918–1400 K and 1400–1699 K. The glass transition temperature (Tg) is measured by differential scanning calorimetry (DSC) and the concentration dependence of the glass transition temperature on the content of potassium oxide in the melt is shown.
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.