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《China Powder Science and Technology》 2010-04
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Comparison of Dispersion Properties Between Copper Nano-particles and Carbon Coated Copper Nano-particles

Mao Lingbo1,Zhang Renyuan1,Ke Xiufang1,Pang Jinshan1,2(1.Faculty of Material and Energy,Guangdong University ofTechnology,Guangzhou 510090;2.Xinhui Entry-exit Inspection and Quarantine Bureau,P.R.China Jiangmen 529100,China)  
The carbon coated copper nano-particles were produced by using direct current carbon arc discharge method and characterized by X - ray diffraction (XRD) and transmission electron microscopy (TEM). Ultrasonic method was applied to disperse carbon coated copper nano-particles and copper nano-particles. The dispersion properties were compared by measuring absorbance and sedimentation time. The results showed that because of the high surface free energy, some of the copper nano-particles were oxidized. Copper hydroxide flocculent precipitate generated easily when the copper nano-particles dispersed in water medium. Since protection of carbon covering and the small density and well surface absorption properties of the carbon coated copper nano-particles, its dispersion properties were better than that of copper nano-particles obviously.
【Fund】: 广东省博士启动基金 编号:9451009001002707;; 广东省科技计划项目 编号:2006B13201001;; 广东工业大学博士科研启动项目(093014)的支持
【CateGory Index】: TB383.1
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