Fan Yang, Shikun Zhu, Xu Chen, Jiangjiang Mao, Peng Lv, Haibo Peng, Tieshan Wang
{"title":"Evaluation of nuclear transmutation effects due to beta decay on borosilicate glasses","authors":"Fan Yang, Shikun Zhu, Xu Chen, Jiangjiang Mao, Peng Lv, Haibo Peng, Tieshan Wang","doi":"10.1111/ijag.16619","DOIUrl":"10.1111/ijag.16619","url":null,"abstract":"<p>In the study of deep geological disposal of high-level radioactive waste (HLW), beta decay has been widely studied, whereas the nuclear transmutation effects due to beta decay on vitrification are generally neglected. In this work, a series of sodium borosilicate glasses doped with cesium was fabricated. The nuclear transmutation due to beta decay evolving with the deposited time was simulated by substituting for cesium with barium. The macroscopic properties of the glasses, including density, hardness, and Young's modulus, were measured using the Archimedes (buoyancy) method and nanoindentation, respectively. The microscopic structures of the glasses were characterized by grazing incident X-ray diffraction, infrared spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, and Raman spectroscopy. The nuclear transmutation effects were significant. With the substitution of barium for cesium, the density, hardness, and modulus of the glasses increased and eventually tended to saturation. A decrease of [BO<sub>3</sub>] units and an increase of [BO<sub>4</sub>] units were observed in the infrared spectra and NMR spectra. In addition, the results were systematically compared to previous strontium-doping work in order to evaluate nuclear transmutation effects due to beta decay on vitrification in HLW comprehensively. The comparison demonstrated that the nuclear transmutation effect of cesium is completely opposite to that of strontium. The research is expected to contribute to a deeper understanding on the nuclear transmutation effects due to beta decay in HLW on vitrification.</p>","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 3","pages":"389-398"},"PeriodicalIF":2.1,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48062728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melis Can Özdemir Yanık, Onur Demirel, Mustafa Elmadağlı, Esin Günay, Süheyla Aydın
{"title":"Investigation of glass sintering to improve strength and interfacial interactions in glass-to-AISI 316L metal joints","authors":"Melis Can Özdemir Yanık, Onur Demirel, Mustafa Elmadağlı, Esin Günay, Süheyla Aydın","doi":"10.1111/ijag.16617","DOIUrl":"10.1111/ijag.16617","url":null,"abstract":"<p>The relationship between sintering and glass-to-metal bonding, which are almost the initial and the last stages of glass-to-metal seal production, has been demonstrated in this study. In this context, a type of barium alkali silicate glass was prepared, and thermal properties were determined by differential thermal analysis, dilatometer, hot-stage microscope, and high-temperature viscosity analysis. Detailed porosity investigations were examined with an optical microscope and ImageJ quantitative analyses, after binder removal and sintering processes carried out at different temperatures and times. An increase in porosity was observed when the sintering and binder removal temperatures and times were increased. The bending strength of the sintered glass sample was decreased with the increment in porosity. A typical housing material AISI 316L stainless steel was used for preparing glass-to-metal joints. The high porosity after sintering caused larger bubbles to form after bonding and reduced the shear strength. The effect of sintering conditions on the interfacial interaction for glass-to-metal joints are revealed by cross-sectional scanning electron microscopy–energy-dispersive spectrometer analyses. Atomic force microscopy analyses and contact angle measurements were conducted to supplement investigation. This study addressed that the mechanical strength and chemistry of glass-to-metal joints showed strong dependency on glass sintering conditions.</p>","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"14 2","pages":"256-267"},"PeriodicalIF":2.1,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41516558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}