Preparation of Mo60Cu40 Composite Nano-Powder by Hydrogen Reaction

✍ Scribed by Li Zaiyuan; Zhai Yuchun

• Book ID: 104453538
• Publisher: Elsevier
• Year: 2010
• Weight: 417 KB
• Volume: 39
• Category: Article
• ISSN: 1875-5372
• DOI: 10.1016/s1875-5372(10)60072-0

✦ Synopsis

Mo-Cu (Mo:Cu=60:40

, mass ratio) predecessor powder was prepared by chemical co-precipitation taking (NH 4 ) 6 Mo 7 O 24 •2H 2 O nd CuSO 4 •5H 2 O as starting materials. And then the Mo-Cu predecessor powder was reduced by hydrogen in closed circulation system to prepare the Mo-Cu composite nano-powder. The results reveal that conditions of the chemical co-precipitation are that reaction temperature is (50±5) °C, pH value (5.1±0.1), and ageing time (9±1) h. Under the conditions mentioned above, the average particle size of the prepared the Mo-Cu predecessor powder is 20 nm. The hydrogen reduction temperature during closed circulation is 650 °C. The particle size of obtained Mo-Cu composite powder is less than 100 nm.