Synthesis of Ti(C, N, O) ceramic from rutile at low temperature by CH4-H2-N2 gas mixture

doi:10.1016/j.ijrmhm.2021.105659

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	Synthesis of Ti(C, N, O) ceramic from rutile at low temperature by CH4-H2-N2 gas mixture
	Fan, Gangqiang 1,3; Y., Hou ; D., Huang ; J., Dang ; R., Zhang ; J., Xiang ; X., Lv ; X., Ding
刊名	International Journal of Refractory Metals and Hard Materials
	2021-12-01
卷号	101
关键词	Carbon nitride Density functional theory Gas mixtures Temperature Thermoanalysis CH$-4$ CH4-H2-N2 gas mixture Gases mixture Lows-temperatures Novel synthesis process Reaction mechanism Ti(C, N, O) TiO$-2$ Titania oxides Titanium carbonitrides
ISSN号	02634368
DOI	10.1016/j.ijrmhm.2021.105659
英文摘要	Titanium carbides, oxides, nitrides, and carbonitrides possess many special and excellent properties. But the high production cost caused by the traditional carbothermic reduction process severely limits the wide applications. In this study, a novel synthesis process has been proposed by reducing and carbonitriding TiO2 with a CH4-H2-N2 gas mixture at low temperatures. The synthesis of Ti(C, N, O), reaction mechanism, and the composition of the product have been investigated. Thermodynamic analysis indicated that TiO2 could be ultimately reduced and carbonitrided to Ti(C, N, O) by CH4-H2-N2 gas mixture. Based on the predictions of thermodynamics, the effects of reduction time, temperature, and gas composition have been studied experimentally. The obtained results indicated that increasing reduction temperature and introduction of N2 are beneficial to the synthesis of Ti(C, N, O). Finally, the optimum reaction conditions have been obtained. The density functional theory (DFT) results further demonstrated the reaction mechanism. This work provides a new approach to prepare metallic carbonitrides from their oxides. © 2021 Elsevier Ltd
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000706708200003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151126]
专题	兰州理工大学
作者单位	1.Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing; 400044, China; 2.National Innovation (Qingdao) High speed Train Material Research Institute Co. LTD, Qingdao; 266109, China 3.College of Materials Science and Engineering, Chongqing University, Chongqing; 400044, China; 4.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 5.Malvern Panalytical(China), Shanghai; 200233, China;
推荐引用方式 GB/T 7714	Fan, Gangqiang,Y., Hou,D., Huang,et al. Synthesis of Ti(C, N, O) ceramic from rutile at low temperature by CH4-H2-N2 gas mixture[J]. International Journal of Refractory Metals and Hard Materials,2021,101.
APA	Fan, Gangqiang.,Y., Hou.,D., Huang.,J., Dang.,R., Zhang.,...&X., Ding.(2021).Synthesis of Ti(C, N, O) ceramic from rutile at low temperature by CH4-H2-N2 gas mixture.International Journal of Refractory Metals and Hard Materials,101.
MLA	Fan, Gangqiang,et al."Synthesis of Ti(C, N, O) ceramic from rutile at low temperature by CH4-H2-N2 gas mixture".International Journal of Refractory Metals and Hard Materials 101(2021).