{"title":"使用氧化镁和氧化钙改性剂的 ZnO-Al2O3-SiO2-B2O3 基玻璃陶瓷的结晶行为和微观结构","authors":"Jiwon Choi, Kangduk Kim","doi":"10.1016/j.jnoncrysol.2024.123230","DOIUrl":null,"url":null,"abstract":"<div><p>The role of glass-structure modifiers was examined by analyzing the crystallization behavior and microstructure of a ZnO–Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub>–B<sub>2</sub>O<sub>3</sub> glass system with MgO and CaO substitutions. Differential thermal analysis indicated that the crystallization temperature (T<sub>p</sub>) increased with MgO substitution but decreased with CaO substitution. X-ray diffraction analysis demonstrated that increasing the amounts of MgO and CaO led to the formation of a gahnite crystalline phase after treatment at 1200 °C. Nano-sized crystals were observed when the specimen was heat-treated at 1000 °C, and dendrite crystals were observed on the surface when treated at 1200 °C. Non-isothermal analysis revealed that the substitution with MgO and CaO resulted in surface crystallization behaviors with high activation energies (271.72 and 301.75 k·J·mol<sup>-1</sup>) and low Avrami constants (2.05 and 1.67). Micro-Vickers hardness showed maximum values of 7.65 and 6.86 GPa when MgO and CaO were substituted, respectively.</p></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"646 ","pages":"Article 123230"},"PeriodicalIF":3.2000,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Crystallization behavior and microstructure of ZnO–Al2O3–SiO2–B2O3-based glass-ceramics using MgO and CaO modifiers\",\"authors\":\"Jiwon Choi, Kangduk Kim\",\"doi\":\"10.1016/j.jnoncrysol.2024.123230\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The role of glass-structure modifiers was examined by analyzing the crystallization behavior and microstructure of a ZnO–Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub>–B<sub>2</sub>O<sub>3</sub> glass system with MgO and CaO substitutions. Differential thermal analysis indicated that the crystallization temperature (T<sub>p</sub>) increased with MgO substitution but decreased with CaO substitution. X-ray diffraction analysis demonstrated that increasing the amounts of MgO and CaO led to the formation of a gahnite crystalline phase after treatment at 1200 °C. Nano-sized crystals were observed when the specimen was heat-treated at 1000 °C, and dendrite crystals were observed on the surface when treated at 1200 °C. Non-isothermal analysis revealed that the substitution with MgO and CaO resulted in surface crystallization behaviors with high activation energies (271.72 and 301.75 k·J·mol<sup>-1</sup>) and low Avrami constants (2.05 and 1.67). Micro-Vickers hardness showed maximum values of 7.65 and 6.86 GPa when MgO and CaO were substituted, respectively.</p></div>\",\"PeriodicalId\":16461,\"journal\":{\"name\":\"Journal of Non-crystalline Solids\",\"volume\":\"646 \",\"pages\":\"Article 123230\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2024-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Non-crystalline Solids\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022309324004071\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Non-crystalline Solids","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022309324004071","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Crystallization behavior and microstructure of ZnO–Al2O3–SiO2–B2O3-based glass-ceramics using MgO and CaO modifiers
The role of glass-structure modifiers was examined by analyzing the crystallization behavior and microstructure of a ZnO–Al2O3–SiO2–B2O3 glass system with MgO and CaO substitutions. Differential thermal analysis indicated that the crystallization temperature (Tp) increased with MgO substitution but decreased with CaO substitution. X-ray diffraction analysis demonstrated that increasing the amounts of MgO and CaO led to the formation of a gahnite crystalline phase after treatment at 1200 °C. Nano-sized crystals were observed when the specimen was heat-treated at 1000 °C, and dendrite crystals were observed on the surface when treated at 1200 °C. Non-isothermal analysis revealed that the substitution with MgO and CaO resulted in surface crystallization behaviors with high activation energies (271.72 and 301.75 k·J·mol-1) and low Avrami constants (2.05 and 1.67). Micro-Vickers hardness showed maximum values of 7.65 and 6.86 GPa when MgO and CaO were substituted, respectively.
期刊介绍：
The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid.
In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.
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