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Desilicating zircon with plasma heating and phase equilibrium analyses
Alternative TitleSteel Res. Int.
Yuan, ZF; Pan, YF; Luo, M; Liu, J
2003-09-01
Source PublicationSTEEL RESEARCH INTERNATIONAL
ISSN0177-4832
Volume74Issue:9Pages:531-537
AbstractDesilicated zircona has a great variety of applications. The maximum SiO2 content in desilicated zirconia is <7 mass%. The present techniques to produce zirconia are always accompanied by many drawbacks. So the authors have developed a new plasma process. Desilicated zirconia (88.6 similar to 96.9 mass% ZrO2) and magnesia-stabilized zirconia (> 91.54 mass% ZrO2, < 5.39 mass% MgO) were produced successfully from zircon using a 150 kW plasma rotating furnace. The effects of time and carbon content on the desilication degree were investigated. The mixture treated in the plasma furnace included condensed phases Zr, ZrC, ZrN, ZrO2, C, Si, SiC, SiO2 and gaseous phases SiO, O-2, N-2, CO. The established phase equilibrium diagrams of the Si-C-N-O and Zr-C-N-O systems suggest that the formation Of Si3N4 is thermodynamically impossible, and the formation of ZrC and ZrN is thermodynamically possible in the central high-temperature region of the plasma furnace. Experimental results supported the analyses.; Desilicated zircona has a great variety of applications. The maximum SiO2 content in desilicated zirconia is <7 mass%. The present techniques to produce zirconia are always accompanied by many drawbacks. So the authors have developed a new plasma process. Desilicated zirconia (88.6 similar to 96.9 mass% ZrO2) and magnesia-stabilized zirconia (> 91.54 mass% ZrO2, < 5.39 mass% MgO) were produced successfully from zircon using a 150 kW plasma rotating furnace. The effects of time and carbon content on the desilication degree were investigated. The mixture treated in the plasma furnace included condensed phases Zr, ZrC, ZrN, ZrO2, C, Si, SiC, SiO2 and gaseous phases SiO, O-2, N-2, CO. The established phase equilibrium diagrams of the Si-C-N-O and Zr-C-N-O systems suggest that the formation Of Si3N4 is thermodynamically impossible, and the formation of ZrC and ZrN is thermodynamically possible in the central high-temperature region of the plasma furnace. Experimental results supported the analyses.
KeywordDesilicated Zirconia Magnesia-stabilized Zirconia Desilication Plasma Rotating Furnace Phase Equilibrium Diagrams Xrd Measurements Influence Of Carbon Content And Reaction Time
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordPARTIALLY-STABILIZED ZIRCONIA ; MAGNESIA SOLID ELECTROLYTES ; IONIC-CONDUCTIVITY ; MICROSTRUCTURE ; SENSORS ; OXIDE
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000185620800002
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5274
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Innovat Div Optimal Utilizat Titanium Resources, Multi Phase React Lab, Beijing 100080, Peoples R China
2.Tianjin Iron & Steel Co Ltd, Tianjin, Peoples R China
3.Lian Yuan Iron & Steel Co Ltd, Hunan, Peoples R China
Recommended Citation
GB/T 7714
Yuan, ZF,Pan, YF,Luo, M,et al. Desilicating zircon with plasma heating and phase equilibrium analyses[J]. STEEL RESEARCH INTERNATIONAL,2003,74(9):531-537.
APA Yuan, ZF,Pan, YF,Luo, M,&Liu, J.(2003).Desilicating zircon with plasma heating and phase equilibrium analyses.STEEL RESEARCH INTERNATIONAL,74(9),531-537.
MLA Yuan, ZF,et al."Desilicating zircon with plasma heating and phase equilibrium analyses".STEEL RESEARCH INTERNATIONAL 74.9(2003):531-537.
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