Enhanced Luminescence of Phosphorescent Composite with SiO2 Encapsulation

	Enhanced Luminescence of Phosphorescent Composite with SiO2 Encapsulation
	Li Wensheng 1; Tang Lifang 1; He Ling 1; Hu Chunxia 1,2; Zhao Wenjie 1; Yan Wang 1
刊名	RARE METAL MATERIALS AND ENGINEERING
	2019-07
卷号	48 期号:7 页码:2330-2337
关键词	cold spray Cu-14Al-X/SrAl2O4 composite coating quenching SiO2 encapsulation luminescent properties
ISSN号	1002-185X
英文摘要	In order to prevent the luminescence quenching phenomenon of the rare earth phosphors in the Cu-14Al-X/SrAl2O4 composite coating, the rare earth phosphors SrAl2O4: Eu2+, Dy3+ were surface-coated by a sol-gel method to prepare SiO2-SrAl2O4 coated powders, and then the uncoated powders and the coated powders were sprayed on the 45 steel substrate by cold spraying technique. The friction and wear of the coatings were monitored by luminescence. To explore the cold spray process of the luminescence quenching mechanism of the phosphors and quenching process effect of the SiO2, the coated powders were characterized by SEM and laser particle size analysis, and the microstructure, micro-composition and luminescence properties of the composite coatings were also investigated by SEM, laser particle analyzer, fluorospectro photometer. The results indicate that the contact of rare earth phosphor with Fe, Mn, Ni elements, and the high-speed impact of spray particles on each other are the main reasons of the luminescence quenching of the cold spray coating. It is also found that the SiO2 shell structure prepared by the sol-gel method could optimize the surface morphology of the SiO2-SrAl2O4 coating powder to be smoother and rounder, which leads to the increased hardness and a better microstructure transition of the composite coating, thus resulting in a better luminescence property.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	中文
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000480493400042
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31755]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Li Wensheng
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Inst Technol, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li Wensheng,Tang Lifang,He Ling,et al. Enhanced Luminescence of Phosphorescent Composite with SiO2 Encapsulation[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(7):2330-2337.
APA	Li Wensheng,Tang Lifang,He Ling,Hu Chunxia,Zhao Wenjie,&Yan Wang.(2019).Enhanced Luminescence of Phosphorescent Composite with SiO2 Encapsulation.RARE METAL MATERIALS AND ENGINEERING,48(7),2330-2337.
MLA	Li Wensheng,et al."Enhanced Luminescence of Phosphorescent Composite with SiO2 Encapsulation".RARE METAL MATERIALS AND ENGINEERING 48.7(2019):2330-2337.