Evolution of microstructure and wear-friction behavior of W-30 wt.% Cu nanocomposite produced via a mechanochemical synthesis route
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K. Zangeneh-madar
Abstract
W-30 wt.% Cu nanocomposites were prepared by chemical reduction of a ball-milled WO3-CuO powder mixture under a hydrogen atmosphere. The prepared samples were analyzed by means of X-ray diffraction, transition electron microscopy, scanning electron microscopy and energy dispersed spectroscopy. Microstructural studies revealed higher density of the composite sintered at 1300 °C compared to 1 050 °C and 1 150 °C due to activated liquid phase sintering as well as the solution-reprecipitation mechanism at 1300 °C. Density and hardness of the W-Cu composite samples measured in the range of 87.5- 97.3 g cm-3 and 22 - 63 Rockwell A, respectively. It was also found that the wear mechanism of the composite includes the following steps: chipping of tungsten particles, plastic deformation of copper phase and formation of some Cu-free pores and micro-cracks, pulling out of tungsten particles and plastic strain and deformation of tungsten particles and formation of a mechanically mixed layer on the surface.
© 2020 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- CONTENTS
- Original Contributions
- Accurate estimation of DLC thin film hardness using genetic programming
- Effects of graphene on the microstructure and properties of MAO coatings formed on AA7050
- Influence of nanostructured Cu on the mechanical properties of Cu–MWCNTs composites
- Effect of NbC on the microstructure, mechanical properties, and oxidation resistance of Ti(C,N)-based cermets
- Evolution of microstructure and wear-friction behavior of W-30 wt.% Cu nanocomposite produced via a mechanochemical synthesis route
- Comparison of the strengthening effects of Nb, V, and Ti on the mechanical properties of 20MnSi low-alloy steel
- Effects of Zn content on surface deformability and corrosion resistance of MgZnMnCa alloys
- Experimental investigation on low cycle fatigue properties of Ni-based alloy with single hole
- Phase relationships in the Ce–Nd–B system at 773 K
- Notifications
- Erratum
- DGM
- CONFERENCES
- Imprint
Artikel in diesem Heft
- CONTENTS
- Original Contributions
- Accurate estimation of DLC thin film hardness using genetic programming
- Effects of graphene on the microstructure and properties of MAO coatings formed on AA7050
- Influence of nanostructured Cu on the mechanical properties of Cu–MWCNTs composites
- Effect of NbC on the microstructure, mechanical properties, and oxidation resistance of Ti(C,N)-based cermets
- Evolution of microstructure and wear-friction behavior of W-30 wt.% Cu nanocomposite produced via a mechanochemical synthesis route
- Comparison of the strengthening effects of Nb, V, and Ti on the mechanical properties of 20MnSi low-alloy steel
- Effects of Zn content on surface deformability and corrosion resistance of MgZnMnCa alloys
- Experimental investigation on low cycle fatigue properties of Ni-based alloy with single hole
- Phase relationships in the Ce–Nd–B system at 773 K
- Notifications
- Erratum
- DGM
- CONFERENCES
- Imprint
