Abstract
The conventional manufacturing process of fiber-reinforced metal matrix composites via liquid infiltration processes, preform manufacturing using inorganic binders is essential. However, the procedure involves binder sintering, which requires high energy and long operating times. A new fabrication process without preform manufacturing is proposed to fabricate short carbon fiber (SCF)-reinforced aluminum matrix composites using a low-pressure infiltration method. To improve the wettability between fiber and matrix, fibers were plated copper using an electroless plating process. The low-pressure infiltration method with preformless succeeded in manufacturing a composite with a volume fraction of about 30% of carbon fibers.The fiber orientation of the composite material manufactured without preform and the fiber orientation of the composite material manufactured using an inorganic binder was almost the same. The manufactured composites with preformless have high hardness and high thermal conductivity.
Highlights
The conventional manufacturing process of fiber-reinforced metal matrix composites via liquid infiltration processes, preform manufacturing using inorganic binders is essential
The Cu particles attached to the short carbon fiber (SCF) surface lead to an uneven plating layer as shown by the arrows (Fig. 2c–e)
The Cu plating thickness and the density of Cu plated SCFs increased with increasing plating time
Summary
The conventional manufacturing process of fiber-reinforced metal matrix composites via liquid infiltration processes, preform manufacturing using inorganic binders is essential. A new fabrication process without preform manufacturing is proposed to fabricate short carbon fiber (SCF)reinforced aluminum matrix composites using a low-pressure infiltration method. The conventional infiltration processes for fabricating SCF reinforced Al matrix composites generally use inorganic binders such as SiO23, Al2O34, or T iO25 for the SCF preform manufacturing. A novel fabrication process that is cost-effective with high production efficiency without requiring preform manufacturing is needed for manufacturing SCF/Al composites. The objective of this research is to develop a new process for fabricating SCF reinforced Al matrix composites without preform manufacturing. The effect of SCF content on Vickers hardness and thermal conductivity of composites without preform manufacturing was investigated
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