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| Effect of sintering process on properties of Cu-based pre-alloyed powder |
| XIAO Chang-jiang, DOU Zhi-qiang，LI juan |
| School of Material Science and Engineering, Henan University of Technology, Zhengzhou 450001,China |
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Abstract The effects of sintering temperature, holding time and sintering pressure on the properties of Cu-Fe-Sn-Ni quaternary Cu-based pre-alloyed powder with particle size of about 500 nm were studied by three-factor and three-level orthogonal experiments. The density, flexural strength and hardness of the samples under different sintering conditions were tested, and the samples were observed by scanning electron microscope. The results show that the influence of various factors on the properties is different, the best mechanical properties is obtained under the temperature 820 ℃，pressure 25 MPa and holding time 5 min, and its mechanical properties of the density, the bending strength and the hardness are 8.21 g/cm3, 1 335 MPa and 112.5HRB, respectively. Under the bonding condition, the sample is the densest and the bonding between the powders is the best.
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Received: 09 March 2018
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2019, Vol. 29 
