A. DeCeanne, A. Potter, K. Richter, D. Starkenburg, B. Pérez, T. Munhollon, N. Barnes, E. Troendle, C. Flynn, M. Affatigato, S. Feller, Edgar Dutra Zanotto, O. Pietl
{"title":"碱硼酸玻璃在低改进剂负荷下玻璃化转变宽度趋势的异常","authors":"A. DeCeanne, A. Potter, K. Richter, D. Starkenburg, B. Pérez, T. Munhollon, N. Barnes, E. Troendle, C. Flynn, M. Affatigato, S. Feller, Edgar Dutra Zanotto, O. Pietl","doi":"10.13036/17533562.58.5.004","DOIUrl":null,"url":null,"abstract":"Previous studies conducted at Coe College have examined the glass transition width (ΔTg) among alkali borate glasses. Munhollon et al and Starkenburg et al discovered anomalies in the widths of the glass transition of alkali borate glasses at low alkali contents. Masao Kodama has also studied these thermal properties; Kodama’s published Tg data exhibit an identical, albeit unmentioned, anomaly. The anomaly has been verified, and the dataset widely expanded to more fully cover the compositional range. Onset definitions were used for Tg and Te. ΔTg is defined as Te−Tg. This study describes the anomaly and provides an explanation based on Shakhmatkin et al’s thermodynamic model of glass structure. The basis of the Shakhmatkin et al’s approach is that the glass is composed of structural groupings from various associated crystalline stoichiometries. Knowledge of borate crystal structures were taken from Wright et al. The concept of the fictive temperature (the temperature at which the glass structure is frozen in) along with a modified view of constraint theory was also employed in which the chemical groupings used were the superstructural units rather than the short range structures. We use the superstructural groupings rather than the short range trigonal and tetrahedral borons proposed by Mauro et al since there is no difference in the abundances of the short range units between any of the alkali borate series in this range of composition.","PeriodicalId":49696,"journal":{"name":"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B","volume":null,"pages":null},"PeriodicalIF":0.3000,"publicationDate":"2017-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"An anomaly in the glass transition width trends of alkali borate glasses at low modifier loadings\",\"authors\":\"A. DeCeanne, A. Potter, K. Richter, D. Starkenburg, B. Pérez, T. Munhollon, N. Barnes, E. Troendle, C. Flynn, M. Affatigato, S. Feller, Edgar Dutra Zanotto, O. Pietl\",\"doi\":\"10.13036/17533562.58.5.004\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Previous studies conducted at Coe College have examined the glass transition width (ΔTg) among alkali borate glasses. Munhollon et al and Starkenburg et al discovered anomalies in the widths of the glass transition of alkali borate glasses at low alkali contents. Masao Kodama has also studied these thermal properties; Kodama’s published Tg data exhibit an identical, albeit unmentioned, anomaly. The anomaly has been verified, and the dataset widely expanded to more fully cover the compositional range. Onset definitions were used for Tg and Te. ΔTg is defined as Te−Tg. This study describes the anomaly and provides an explanation based on Shakhmatkin et al’s thermodynamic model of glass structure. The basis of the Shakhmatkin et al’s approach is that the glass is composed of structural groupings from various associated crystalline stoichiometries. Knowledge of borate crystal structures were taken from Wright et al. The concept of the fictive temperature (the temperature at which the glass structure is frozen in) along with a modified view of constraint theory was also employed in which the chemical groupings used were the superstructural units rather than the short range structures. We use the superstructural groupings rather than the short range trigonal and tetrahedral borons proposed by Mauro et al since there is no difference in the abundances of the short range units between any of the alkali borate series in this range of composition.\",\"PeriodicalId\":49696,\"journal\":{\"name\":\"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.3000,\"publicationDate\":\"2017-10-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.13036/17533562.58.5.004\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.13036/17533562.58.5.004","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
An anomaly in the glass transition width trends of alkali borate glasses at low modifier loadings
Previous studies conducted at Coe College have examined the glass transition width (ΔTg) among alkali borate glasses. Munhollon et al and Starkenburg et al discovered anomalies in the widths of the glass transition of alkali borate glasses at low alkali contents. Masao Kodama has also studied these thermal properties; Kodama’s published Tg data exhibit an identical, albeit unmentioned, anomaly. The anomaly has been verified, and the dataset widely expanded to more fully cover the compositional range. Onset definitions were used for Tg and Te. ΔTg is defined as Te−Tg. This study describes the anomaly and provides an explanation based on Shakhmatkin et al’s thermodynamic model of glass structure. The basis of the Shakhmatkin et al’s approach is that the glass is composed of structural groupings from various associated crystalline stoichiometries. Knowledge of borate crystal structures were taken from Wright et al. The concept of the fictive temperature (the temperature at which the glass structure is frozen in) along with a modified view of constraint theory was also employed in which the chemical groupings used were the superstructural units rather than the short range structures. We use the superstructural groupings rather than the short range trigonal and tetrahedral borons proposed by Mauro et al since there is no difference in the abundances of the short range units between any of the alkali borate series in this range of composition.
期刊介绍:
Physics and Chemistry of Glasses accepts papers of a more purely scientific interest concerned with glasses and their structure or properties. Thus the subject of a paper will normally determine the journal in which it will be published.