Preparation and influence factors of ZrO2-MoSi2 agglomerated composite powder used for plasma-spraying

doi:10.13373/j.cnki.cjrm.2014.06.017

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	Preparation and influence factors of ZrO2-MoSi2 agglomerated composite powder used for plasma-spraying
	Zhu, Langtao 1,2; Yang, Jun 1; Zhang, Qingying 3; Wang, Jing 1; Han, Zhihai 4; Yang, Jianfeng 4
刊名	Xiyou Jinshu/Chinese Journal of Rare Metals
	2014-11-01
卷号	38 期号:6 页码:1043-1048
关键词	Agglomeration Atmospheric temperature Dispersions Granulation Milling (machining) Molybdenum compounds Morphology Particle size Plasma jets Plasma spraying Powders Scanning electron microscopy Silicon compounds Sintering Spray drying Surface morphology Zirconia Agglomeration degrees Apparent density Composite powders Dispersion strengthening Inlet air temperatures Laser particle size analyzer Morphology and structures Spray-granulation
ISSN号	02587076
DOI	10.13373/j.cnki.cjrm.2014.06.017
英文摘要	The nano ZrO2 powder was selected to the MoSi2 composites as a second phase for toughening at room temperature and dispersion strengthening at high temperature. The ZrO2-MoSi2 agglomerated composite powders used for air plasma spraying were prepared by spray drying method. The apparent density of the powders were measured by standard funnel method, the particle size and distribution were tested by RISE-2008 laser particle size analyzer, the surface morphology and structure of the composite powders were observed by scanning electron microscope (SEM). Based on the theory analysis and testing results, the effects of raw powder milling time, solid content, binder content, dispersant content, and the spray drying conditions on the powder granulation were studied. The results showed that when the milling time was 12 h, the powder size distribution was between 1~2 μm. The slurry had good fluidity and stability when the solid content of the slurry was 70%, the binder content was 10% and the dispersant content was 1%. As the inlet air temperature was 200, the export air temperature was 120, the peristaltic pump rate was 2 ml·min-1, the inlet pressure was 0.2 MPa, agglomerated composite powder prepared possessed good agglomeration degree, surface dense and dispersion, the average particle diameter of the prepared powder was 42 μm, and the apparent density of the prepared powders was 2.17 g·cm-3. Specially, agglomerated composite powder had high flowability after vacuum sintering at 1200. ©, 2014, Editorial Office of Chinese Journal of Rare Metals. All right reserved.
语种	中文
出版者	Editorial Office of Chinese Journal of Rare Metals
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113771]
专题	兰州理工大学材料科学与工程学院
作者单位	1.School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an; 710055, China; 2.China National Heavy Machinery Research Institute Co., Ltd., Xi'an ; 710032, China; 3.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou ; 730050, China; 4.State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an ; 710049, China
推荐引用方式 GB/T 7714	Zhu, Langtao,Yang, Jun,Zhang, Qingying,et al. Preparation and influence factors of ZrO2-MoSi2 agglomerated composite powder used for plasma-spraying[J]. Xiyou Jinshu/Chinese Journal of Rare Metals,2014,38(6):1043-1048.
APA	Zhu, Langtao,Yang, Jun,Zhang, Qingying,Wang, Jing,Han, Zhihai,&Yang, Jianfeng.(2014).Preparation and influence factors of ZrO2-MoSi2 agglomerated composite powder used for plasma-spraying.Xiyou Jinshu/Chinese Journal of Rare Metals,38(6),1043-1048.
MLA	Zhu, Langtao,et al."Preparation and influence factors of ZrO2-MoSi2 agglomerated composite powder used for plasma-spraying".Xiyou Jinshu/Chinese Journal of Rare Metals 38.6(2014):1043-1048.