|
|
|
| Influence of co-precipitation reaction parameters and dispersant on performance of Cu-Al2O3 powders |
| SHI Yong-liang1，LIN Tao2，QI Cui-fen1，CHEN Tao1，ZHANG Jing-jin1 |
1. Department of Materials Engineering， Hebei College of Industry and Technology， Shijiazhuang 050091， China
2. Advanced Material & Technology Institute， University of Science and Technology Beijing， Beijing 100083， China |
|
|
|
|
Abstract The nano-Al2O3-dispersed strengthening copper-based powder was prepared with acidic and alkaline waste cupric liquor as raw material， polyvinyl alcohol (PVA) as dispersant， adding soluble aluminum salt to co-precipitation， calcination and hydrogen reduction. The effects of co-precipitation process parameters on the particle size of Cu-Al2O3 powder and dispersed phase Al2O3 were checked by laser particle size analyzer， SEM-EDS and X-ray diffraction. Results show that， the Cu-Al2O3 powder with particle size of less than 1.5 μm and narrow size distribution is prepared by controlling co-precipitation reaction parameters as follows， mother liquor concentration of 1.0 mol/L， precipitation ammonia concentration of 20% (volume fraction)， reaction temperature of 70 ℃ and pH value of 7. The particle size and distribution of dispersed phase is controlled by the content of dispersant. The nano-Al2O3-dispersed phase is less than 100 nm particle size and 100-200 nm particle spacing when the content ratio of PVA and copper ion is 0.4[∶]1.0. After sintered at 950 ℃ in hydrogen for 60 min， the sintered body has density of 8.45 g/cm3 and hardness of 115 HB.
|
|
Received: 29 February 2016
Published: 28 March 2017
|
|
|
|
| [1] 张敬国，张景怀，汪礼敏. 以含铜废液为原料制备铜铁复合粉的工艺研究[J]. 稀有金属, 2011, (3)35: 422-427[2] 慕光杉, 蒋毅民. 含铜蚀刻废液的回收与利用[J]. 安全与环境工程, 2006,(3)13:66-68[3] 温炎, 陈昌铭, 陈志传. 利用含铜蚀刻废液生产碱式碳酸铜[J]. 化工环保, 2004, (2) 24: 131-133.[4] Seung Ju Han, Ji Hwan Song, Yongju Bang, et al. Hydrogen production by steam reforming of ethanol over mesoporous Cu-Ni-Al2O3-ZrO2 xerogel catalysts[J]. International Journal of Hydrogen Energy. 2016, 4(41): 2554-2563[5] Nader Rahemi, Mohammad Haghighi, Ali Akbar Babaluo, et al. Non-thermal plasma assisted synthesis and physicochemical characterizations of Co and Cu doped Ni/Al2O3 nanocatalysts used for dry reforming of methane[J]. International Journal of Hydrogen Energy, 2013, 36(38): 16048-16061[6] 黄劲松, 甘子旸, 张仲灵. ODS 弥散强化铜合金[J]. 2014, 3(34): 108-111 [7] 李玲. 表面活性剂与纳米技术[M]. 北京: 化学工业出版社, 2005: 230 |
|
|
|
2017, Vol. 27 
