Experimental Research on Electroforming Nano-ZrO₂ Reinforced Cu-Matrix Composite Aided by Pulse Power

Abstract:

Prepared the nanoZrO₂ reinforced Cu-matrix composite by pulse electroforming. The effects of the content of nanoZrO₂ particle in the casting solution, average cathodic current density, duty cycle, pulse frequency and ultrasonic power on the content of nanoZrO₂ in the electroforming Cu-matrix composite have been studied. The microhardness and surface morphology of Cu-ZrO₂ composite were analyzed. The experimental results demonstrate that the maximum content of nanoZrO₂ in the electroforming Cu-ZrO₂ composite is 2.94%, microhardness is 492 HV, which is significantly improved compared with pulse pure copper’s 337 HV, when the content of nanoZrO₂ is 40 g/L, average cathodic current density is 4A/dm², duty cycle is 0.2 , pulse frequency is 1100 Hz and ultrasonic power is 20w .The surface of composite prepared by pulse electroforming is more smooth, organization is denser, grain is finer and agglomeration of nanoZrO₂ particles is fewer compared with Direct-current electroforming nanoZrO₂ reinforced Cu-ZrO₂ composite.

• Periodical: Key Engineering Materials (Volume 764)
• Pages: 95-105
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.764.95
• Online since: February 2018
• Authors: Zhong Wen Sima*, Zhi Yong Li, Hong Bin Cui, Hun Guo
• Keywords: Cu-Matrix Composite, Nano-ZrO₂ Particles, Pulse Electroforming, Surface Morphology

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