Microstructure characterization and quantitative analysis of copper alloy matrix composites reinforced with WC-xNi powders prepared by spontaneous infiltration

• Published in: Journal of mining and metallurgy. Section B, Metallurgy Vol. 54; no. 2; pp. 169 - 177
• Main Authors: Daoud, I., Miroud, Dj, Yamanoglu, R.
• Format: Journal Article
• Language: English
• Published: Bor Technical Faculty Bor, University of Belgrade 2018; Technical Faculty, Bor
• Subjects: Alloys; Copper; Copper base alloys; Densification; Density; Hardness; Image analysis; Infiltration; Interfacial bonding; Investigations; metal matrix composite; Metal matrix composites; Metals; Microstructure; Nickel; Particle size; Particle size distribution; Particulate composites; Pore size; Porosity; Powder metallurgy; quantification; Quantitative analysis; Sintering; Test methods; Tungsten carbide; WC particles
• ISSN: 1450-5339; 2217-7175
• DOI: 10.2298/JMMB171225005D

In this study, copper alloy matrix composites reinforced with tungsten carbide (WC) particles with the addition of different Ni contents (0, 3, 5, 7, and 10 wt.%) were prepared by the spontaneous infiltration process. Image analysis was used to quantify the microstructural parameters, such as the particle size and distribution, area fraction, binder mean free path, and pore size. The effect of Ni addition on the microstructure, density and hardness are discussed. The results show that a small addition of Ni improves the densification of the infiltrated composites. The highest density value of 11.84 g/cm3 with a hardness of 327 HV was obtained for the infiltrated composite with the addition of 3 wt.% of Ni. The quantitative analysis results are in good agreement with the microstructure properties and hardness results.
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