Journal of the American Ceramic Society最新文献_第10页

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29

引用次数: 0

Transparent Spinel Glass-Ceramics With Varied MgO: Structure, Performance, and Ion-Exchange Behavior 具有不同MgO的透明尖晶石玻璃陶瓷：结构、性能和离子交换行为

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29 DOI: 10.1111/jace.70789

Jiankai Xu, Jing Wang, Luyao Li, Peijing Tian, Xiaokun Tian, Wenjun Li, Jianjun Han

{"title":"Transparent Spinel Glass-Ceramics With Varied MgO: Structure, Performance, and Ion-Exchange Behavior","authors":"Jiankai Xu, Jing Wang, Luyao Li, Peijing Tian, Xiaokun Tian, Wenjun Li, Jianjun Han","doi":"10.1111/jace.70789","DOIUrl":"https://doi.org/10.1111/jace.70789","url":null,"abstract":"<div>\u0000 \u0000 ZnO–MgO–Al2O3–SiO2 (ZMAS) transparent glass-ceramics were prepared by the melting method. The effects of MgO content (4–10 mol%) on the network structure, crystallization mechanism, microstructure, and ion-exchange enhanced mechanical properties were investigated. As the MgO content increases, the conversion of [AlO5] to [AlO4] is promoted, thereby enhancing the polymerization degree of the glass network. Additionally, Mg2+ ions can participate in the formation of spinel crystals; thus, the increasing MgO content enhances the crystallinity of spinel and further enhances the mechanical properties of glass-ceramics. When the addition of MgO is 4–6 mol%, the mean crystal sizes are ∼35 nm, maintaining high transparency. Increasing the MgO content further resulted in larger grain sizes, which in turn reduced transparency. The glass with 6 mol% MgO nucleated at 800°C for 6 h and then crystallized at 960°C for 2 h exhibited optimal comprehensive properties, a Vickers hardness of 830 kgf/mm2, approximately 70% visible light transmittance, an elastic modulus of 103 GPa, and the three-point flexural strength of 171 MPa. These transparent glass-ceramics were conducted on a two-step ion-exchange process, leading to the increasing of Vickers hardness to 920 kgf/mm2 and the three-point flexural strength to 600 MPa. It is indicated that the spinel glass-ceramic can be chemically strengthened through ion-exchange, showing a high potential in the applications of protective covers for cell phones, displays, and some precision lens.\u0000 </div>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148050474","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}

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Effects of MgO/Al2O3 Molar Ratio on Properties and Crystallization of Cordierite Glass-Ceramics Prepared From Industrial Solid Waste MgO/Al2O3摩尔比对工业固体废物制备堇青石微晶玻璃性能和结晶的影响

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29 DOI: 10.1111/jace.70791

Shize Chen, Liming Luo, Hongjuan Sun, Zijun Xian, Ping Li, Ya Wen

{"title":"Effects of MgO/Al2O3 Molar Ratio on Properties and Crystallization of Cordierite Glass-Ceramics Prepared From Industrial Solid Waste","authors":"Shize Chen, Liming Luo, Hongjuan Sun, Zijun Xian, Ping Li, Ya Wen","doi":"10.1111/jace.70791","DOIUrl":"https://doi.org/10.1111/jace.70791","url":null,"abstract":"<div>\u0000 \u0000 Cordierite glass-ceramics have attracted much attention for their excellent properties. In this work, asbestos tailings, coal fly ash, and kaolin were used as raw materials. The MgO/Al2O3 molar ratio (M/A ratio) and sintering temperature of raw materials were changed. The cordierite glass-ceramics were prepared by melting water quenching and sintering method. X-ray diffraction, scanning electron microscopy-energy dispersive spectrometer, differential scanning calorimetry, and X-ray photoelectron spectroscopy were used to investigate the microstructure and crystallization behavior of the glass-ceramics. The physical and chemical properties of the glass-ceramics were systematically evaluated. The results show that the crystallization process of glass-ceramics is a combination of surface crystallization and bulk crystallization. A range of structural fragments in the base glass are transformed at a certain temperature and precipitated into crystal phases such as cordierite. Reducing the M/A ratio can promote the precipitation of cordierite phase and improve the acid–base resistance of glass-ceramics. Increasing the M/A ratio helps to improve the densification of glass-ceramics and thus improves the bending resistance. The cordierite glass-ceramics prepared at the sintering temperature of 1170–1180°C and the M/A ratio of 1.4–1.8 showed the best comprehensive properties and met the requirement standard (JC/T 2097-2011). Considering the specific needs of cordierite glass-ceramics in different applications, the selection of glass-ceramics materials with specific properties is the key to ensure that the performance indicators can be met. This study provides a feasible path for the resource utilization of industrial solid waste.\u0000 </div>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148050485","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}

引用次数: 0

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29

引用次数: 0

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29

引用次数: 0

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29

引用次数: 0

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29

引用次数: 0

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29

引用次数: 0

Experimental and Thermodynamic Modeling Study of Phase Equilibria in the FeO–Fe2O3–SnO–SnO2–SiO2 System FeO-Fe2O3-SnO-SnO2-SiO2体系相平衡的实验与热力学模拟研究

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29 DOI: 10.1111/jace.70763

Maksym Shevchenko, A. Ilyushechkin, Evgueni Jak

{"title":"Experimental and Thermodynamic Modeling Study of Phase Equilibria in the FeO–Fe2O3–SnO–SnO2–SiO2 System","authors":"Maksym Shevchenko, A. Ilyushechkin, Evgueni Jak","doi":"10.1111/jace.70763","DOIUrl":"https://doi.org/10.1111/jace.70763","url":null,"abstract":"Experimental investigation and thermodynamic modeling of the phase equilibria in the FeO–Fe2O3–SnO–SnO2–SiO2 system have been undertaken to characterize Sn behavior in iron silicate slags for recycling of waste electrical and electronic materials (WEEE) through black copper process. Phase equilibria data at 865–1740°C were obtained through equilibration of synthetic mixtures in sealed silica ampoules or open crucibles, on Ir wires, or Pt–Ir foils, followed by rapid quenching and electron probe x-ray microanalysis. Phase equilibria and liquidus isotherms of the “FeO”–“SnO”–SiO2 system in equilibrium with Sn metal, “Fe2O3”–“SnO2”–SiO2 system in air and 1 atm oxygen, FeO–Fe2O3–SnO–SnO2–SiO2–Au2O in equilibrium with Au–Fe–Sn metal, and hematite(spinel)–cassiterite equilibria in the Fe–Sn–O system at various p(O2) in the presence of CaO–SiO2 or PbO–SiO2 flux were measured in the tridymite/cristobalite SiO2, cassiterite SnO2, hematite (Fe,Sn)2O3, spinel (Fe,Sn)3O4+x, and fayalite Fe2SiO4 phase fields. New data were used for developing a self-consistent set of thermodynamic parameters for all phases to describe the Pb/Zn/Cu/Fe-containing complex system for characterizing Sn behavior in industrial primary smelting and recycling slags.","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.70763","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148050489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly Transparent LiAl5O8 Ceramics Prepared by Spark Plasma Sintering and Its Luminescence 火花等离子烧结制备高透明LiAl5O8陶瓷及其发光性能

IF 3.8 3区材料科学

Journal of the American Ceramic Society Pub Date : 2026-04-29 DOI: 10.1111/jace.70781

Tomáš Thoř, Filip Průša, David Tomka, Vít Jakeš, Romana Kučerková, Martin Nikl, Kateřina Rubešová

{"title":"Highly Transparent LiAl5O8 Ceramics Prepared by Spark Plasma Sintering and Its Luminescence","authors":"Tomáš Thoř, Filip Průša, David Tomka, Vít Jakeš, Romana Kučerková, Martin Nikl, Kateřina Rubešová","doi":"10.1111/jace.70781","DOIUrl":"https://doi.org/10.1111/jace.70781","url":null,"abstract":"Transparent ceramics of LiAl5O8 were prepared by spark plasma sintering (SPS) using precursor powders synthesized via solid-state reaction. The effects of sintering dwell time and cooling regime on the microstructure, transparency, and cracking of the sintered ceramics were investigated. The dwell time at the sintering temperature influenced light scattering and consequently also the transparency of the ceramic samples. The two-step cooling regime affected both the microstructure and transparency of the ceramics in addition to playing a critical role in preventing cracking of the samples. By optimizing the dwell time duration and cooling profile, crack-free transparent ceramics with transmittance greater than 80% at 500 nm were achieved. The resulting LiAl5O8 transparent ceramics exhibited luminescence originating mainly from Fe3+ and Cr3+ impurities. Furthermore, strong defect-related emission was also observed under the high-energy X-ray excitation.","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"109 5","pages":""},"PeriodicalIF":3.8,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.70781","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148050492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0