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One-step synthesis of t-ZrO2 from Zircon using magnesium-calcium minerals as stabilizers

文献类型：期刊论文

作者Chen, Boil1; Wu, Meihua1; Liu, Qiyun1; He, Can1; Yang, Yifan1; Ye, Xinjian1; Gao, Chaochao1; Huang, Zhaohui1; Min, Xin1; Zheng, Xiaohong2
刊名CERAMICS INTERNATIONAL
出版日期2022-10-15
卷号48期号:20页码:29997-30004
ISSN号0272-8842
关键词Zircon ZrO2 Magnesium-calcium minerals Crystal structure
DOI10.1016/j.ceramint.2022.06.268
英文摘要Stabling crystal structure at room temperature is a classic problem in the study of Zirconium dioxide (ZrO2). However, there are few investigations on making tetragonal zirconia (t-ZrO2) in one step at a low cost. In this research, t-ZrO2 is synthesized using a one-step high-temperature solid-state sintering technique with magnesite, dolomite, and limestone as stabilizers and zircon as the raw material. The most suitable stabilizers and reaction conditions are determined, and the mechanism of zirconia structure stabilization is explored. The findings suggest that magnesite has the lowest effect as a crystal structure stabilizer, whereas dolomite and limestone are pretty close, but dolomite introduces more impurities. The ideal reaction conditions were 60% mol limestone at 1500 degrees C. The stabilization mechanism is zirconia gap correction, according to XRD and EPR data. The characterization of the SEM demonstrates that the heat treatment temperature and stabilizer had little effect on the morphology of t-ZrO2. When limestone was introduced throughout the process, EDS data revealed that some amorphous silicon-calcium compounds occurred in the product. The focus of follow-up work will be on how to lessen the impact in this area. This research offers vital reference value for reducing the cost of the synthetic t-ZrO2 process.
WOS关键词TETRAGONAL ZIRCONIA ; MARTENSITIC-TRANSFORMATION ; CERAMICS ; COPRECIPITATION ; MORPHOLOGY ; BEHAVIOR ; OXIDE
资助项目National Natural Science Foundation of China[52002371] ; National Key R&D Program of China[2018YFC1901503]
WOS研究方向Materials Science
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000917705300006
资助机构National Natural Science Foundation of China ; National Key R&D Program of China
源URL[http://ir.ipe.ac.cn/handle/122111/56643]  
通讯作者Huang, Zhaohui; Tao, Tianyi
作者单位1.China Univ Geosci Beijing, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Chem & Chem Engn Data Ctr, Beijing Engn Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Boil,Wu, Meihua,Liu, Qiyun,et al. One-step synthesis of t-ZrO2 from Zircon using magnesium-calcium minerals as stabilizers[J]. CERAMICS INTERNATIONAL,2022,48(20):29997-30004.
APA Chen, Boil.,Wu, Meihua.,Liu, Qiyun.,He, Can.,Yang, Yifan.,...&Tao, Tianyi.(2022).One-step synthesis of t-ZrO2 from Zircon using magnesium-calcium minerals as stabilizers.CERAMICS INTERNATIONAL,48(20),29997-30004.
MLA Chen, Boil,et al."One-step synthesis of t-ZrO2 from Zircon using magnesium-calcium minerals as stabilizers".CERAMICS INTERNATIONAL 48.20(2022):29997-30004.

入库方式： OAI收割

来源：过程工程研究所

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