Journal ArticleDOI
Aluminium carbide formation in interpenetrating graphite/aluminium composites
TLDR
In this paper, an interpenetrating graphite/aluminium composites were produced by gas pressure infiltration of aluminium alloys with varying silicon content into porous graphite preforms.Abstract:
We have produced interpenetrating graphite/aluminium composites by gas pressure infiltration of aluminium alloys with varying silicon content into porous graphite preforms. Infiltration experiments at 750 °C have shown that a silicon content of up to 18 wt.% can reduce the formation of aluminium carbide but cannot completely deter it. Optical and scanning electron microscopy revealed numerous lath-like interfacial aluminium carbide crystals in the μm regime which, however, did not affect the flexural strength of our composites. Severe aluminium carbide degradation was observed within a few days on composites exposed to ambient conditions. Carbide-free composites were produced by reducing the infiltration temperature to 670 °C for the eutectic alloy.read more
Citations
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Review of metal matrix composites with high thermal conductivity for thermal management applications
TL;DR: In this article, the problems involved in the fabrication and the brazing of these composites were elucidated and the main focus was put on the discussion of the methods to overcome these difficulties.
Journal ArticleDOI
Thermal properties of aluminum–graphite composites by powder metallurgy
Jhewn-Kuang Chen,I.S. Huang +1 more
TL;DR: In this paper, the relative density of powder composites achieves up to 99% for composites containing 10 to 90 vol.% graphite, and the thermal conductivity increases from 324 to 783 W/m K.
Journal ArticleDOI
A review on fabrication methods, reinforcements and mechanical properties of aluminum matrix composites
TL;DR: In this paper, the authors present an overview on the available fabrication routes, reinforcement materials, pertinent research issues and challenges in production of fabricated aluminium matrix composites, and special attention is focused on the mechanical properties of fabricated ALM composites.
Journal ArticleDOI
Fabrication, interface characterization and modeling of oriented graphite flakes/Si/Al composites for thermal management applications
Chong Zhou,Gang Ji,Gang Ji,Zhe Chen,Mingliang Wang,Ahmed Addad,Dominique Schryvers,Haowei Wang +7 more
TL;DR: In this article, high thermally conductive graphite flakes (G f )/Si/Al composites have been fabricated using G f, Si powder and an AlSi 7 Mg 0.3 alloy by an optimized pressure infiltration process for thermal management applications.
Journal ArticleDOI
Carbon Materials Reinforced Aluminum Composites: A Review
TL;DR: In this paper, a review of carbon materials reinforced aluminum (C/Al) composites is presented, focusing on the categories, fabrication processes, existing problems and solutions, coatings and interfaces, challenges and opportunities of C/Al composites so as to provide a useful reference for future research.
References
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Journal ArticleDOI
On the toughness of brittle materials reinforced with a ductile phase
TL;DR: In this paper, the authors present some observations in several composite systems of toughening by a plastic stretching mechanism and describe models of the stretching process, and some of the salient aspects of the toughness of brittle matrices emerge from a comparison between theory and experiment.
Journal ArticleDOI
Reinforcement coatings and interfaces in aluminium metal matrix composites
TL;DR: In this article, a review of surface treatments and coating work carried out on reinforcements such as carbon/graphite, silicon carbide (SiC) and alumina (Al2O3) and their effects on the interface, structure and properties of aluminium alloy matrix composites is presented.
Journal ArticleDOI
Strength and fracture toughness of aluminum/alumina composites with interpenetrating networks
Helge Prielipp,Mathias Knechtel,Nils Claussen,Stephen K. Streiffer,H. Müllejans,Manfred Rühle,Jürgen Rödel +6 more
TL;DR: In this article, the fracture strength of metal reinforced ceramics, especially Al/Al2O3 composites with interpenetrating networks, is analyzed and a simple model accounts for the influence of metal volume and metal ligament diameter on the plateau toughness of the composites.
Journal ArticleDOI
Progress in the Development of Graphite- Aluminum Composites Using Liquid Infiltration Technology:
TL;DR: The most successful techniques for producing graphite-aluminum composites have been those that utilize liquid-metal infiltration of graphite yarn as discussed by the authors ; however, a fiber coating is required, which results in wetting and provides a diffusion barrier to inhibit aluminum carbide formation.
Journal ArticleDOI
On the role of brittle interfacial phases on the mechanical properties of carbon fibre reinforced Al-based matrix composites
TL;DR: In this article, high-resolution microfractography performed in combination with transmission electron microscopy shows that the mechanical behaviour of carbon fibre reinforced Al-based matrix composites is related to the presence of brittle interfacial phases.
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Fabrication and properties of graphite flakes/metal composites for thermal management applications
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