多壁碳纳米管对CuSn-Co系胎体力学性能的影响

doi:10.13228/j.boyuan.issn1006-6543.20160071

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Abstract Carbon nanotubes have superior mechanical properties and excellent physical properties （with elastic modulus of 1.0- 1.8 TPa， tensile strength of 150 GPa， density of up to 0.8 g/cm3， thermal expansion coefficient of almost zero）， which is the ideal reinforcement for composite materials. The effects of the multi-walled carbon nanotubes （MWCNT） addition， sintering temperature and hot pressing pressure on the mechanical properties of CuSn-Co matrix were investigated by orthogonal experimental design， and influence degree of the three factors on the mechanical properties of the matrix were analyzed by means of direct analysis and variance analysis respectively. The fracture morphology was also observed through scanning electron microscope. Experimental results show that the carbon nanotubes addition has the most significant influence on the hardness and bending strength of matrix， followed by hot pressing pressure， which has the second significant influence， and the sintering temperature has little effect. The final optimum scheme is as follows： the addition of MWCNT is 0.8% （mass percent）， the sintering temperature is 850 ℃， and the hot pressing pressure is 35 MPa.

Key words： diamond bit multi-walled carbon nanotubes nanoreinforcement bond performance

Received: 07 June 2016 Published: 14 November 2017

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XU Qiang. Influence of multi-walled carbon nanotubes on the mechanical properties of CuSn-Co matrix[J]. , 2017, 27(05): 25-31.

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http://edit.chinamet.cn/Jweb_fmyjgy/EN/10.13228/j.boyuan.issn1006-6543.20160071 OR http://edit.chinamet.cn/Jweb_fmyjgy/EN/Y2017/V27/I05/25