Synthesis of nano-sized TiC powders by designing chemical vapor deposition system in a fluidized bed reactor

doi:10.1016/j.powtec.2020.11.045

	Synthesis of nano-sized TiC powders by designing chemical vapor deposition system in a fluidized bed reactor
	Song, Miao 2,3; Yang, Yafeng 2,3; Xiang, Maoqiao 2,4; Zhu, Qingshan 1,2,3; Zhao, Hongdan 2,3
刊名	POWDER TECHNOLOGY
	2021-03-01
卷号	380 页码:256-264
关键词	Titanium carbide Chemical vapor deposition Nanoparticles
ISSN号	0032-5910
DOI	10.1016/j.powtec.2020.11.045
英文摘要	Chemical vapor deposition (CVD) process is an effective way to fabricate highly pure ultra-fine powders; however commercial fabrication of high quality TiC powders through conventional CVD (TiCl4-H-2-CH4) system remains a great challenge. The main obstacle is that the conversion of chemically stable TiCl4 to TiC is too low (theoretically 133% at 1000 degrees C) to provide sufficient supersaturation to form powders but only coating. To tackle this problem, relatively unstable TiCl3 was proposed as a novel precursor, which is easier to achieve homogeneous nucleation due to the higher conversion of TiCl3 to TiC in the TiCl3-CH4-H-2 system (theoretically 37.7% at 1000 degrees C). In addition, a fluidized bed reactor (FBR) with fluidized TiC seeds providing local turbulence was employed to boost the homogeneous nucleation. Based on the novel idea, for the first time, high purity nanosized TIC powders (about 77.1 nm, purity 99.46 at.%) were successfully fabricated by a fluidized bed chemical vapor deposition (FBCVD) process. More importantly, an advanced simple and effective process was successfully developed to activate the common TiCl4 raw material to synthesize nano-sized TiC powders by designing the reactor. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A11] ; Bureau of Frontier Sciences and Education, Chinese Academy of Sciences[ZDBS-LY-JSC041] ; National Natural Science Foundation of China[11805227] ; Key Research Program of Nanjing IPE Institute of Green Manufacturing Industry[E0010708]
WOS关键词	IN-SITU FORMATION ; TITANIUM CARBIDE ; CARBOTHERMAL SYNTHESIS ; TEMPERATURE SYNTHESIS ; THERMAL REDUCTION ; NANOPARTICLES ; ULTRAFINE ; NUCLEATION ; MECHANISMS ; MORPHOLOGY
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000609259200011
资助机构	Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Bureau of Frontier Sciences and Education, Chinese Academy of Sciences ; National Natural Science Foundation of China ; Key Research Program of Nanjing IPE Institute of Green Manufacturing Industry
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/43309]
专题	中国科学院过程工程研究所
通讯作者	Xiang, Maoqiao; Zhu, Qingshan
作者单位	1.Chinese Acad Sci, Innovat Acad Green Mfg, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 4.Nanjing IPE Inst Green Mfg Ind, Nanjing 211135, Peoples R China
推荐引用方式 GB/T 7714	Song, Miao,Yang, Yafeng,Xiang, Maoqiao,et al. Synthesis of nano-sized TiC powders by designing chemical vapor deposition system in a fluidized bed reactor[J]. POWDER TECHNOLOGY,2021,380:256-264.
APA	Song, Miao,Yang, Yafeng,Xiang, Maoqiao,Zhu, Qingshan,&Zhao, Hongdan.(2021).Synthesis of nano-sized TiC powders by designing chemical vapor deposition system in a fluidized bed reactor.POWDER TECHNOLOGY,380,256-264.
MLA	Song, Miao,et al."Synthesis of nano-sized TiC powders by designing chemical vapor deposition system in a fluidized bed reactor".POWDER TECHNOLOGY 380(2021):256-264.