Fabrication and Properties of In Situ B₁₃P₂ Reinforced Cu-Based Composites

Abstract:

In this work, a new type of B₁₃P₂ reinforced Cu matrix composite (B₁₃P₂/Cu) with excellent wear resistance properties has been fabricated. The experimental results reveal that when the total content of P and B was 3wt.% and the mass ratio of P to B was 2:3, the brittle reticular divorced eutectic Cu₃P disappeared and B₁₃P₂ phase uniformly distributed in Cu matrix. The microstructure can be controlled and designed according to the ratio of P and B. The microhardness of B₁₃P₂ reached up to 1837 HV, which was as high as that of SiC, while the mircohardness of Cu matrix was about 5 times more than pure that of Cu. The wear resistance data indicate that the largest weight loss of pure Cu was approximately four times more than that of the B₁₃P₂ reinforced composites at the 40 min. The CTE of the new composites also decreased as compared with pure Cu.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 1007-1014
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.1007
• Online since: June 2017
• Authors: Zu Xin Sun, Yu Ying Wu*, Xiao Li Cui, Guo Jun Zhang, Xiang Fa Liu
• Keywords: B₁₃P₂, Cu Matrix Composites, Microstructure, Wear Resistance

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