Abstract
The composite materials have effective properties and characteristics for use in most modern and important applications such as space and transportation applications, especially in internal combustion engines as well as applications and marine industries. In this study, Nickel – 5 vol.% Zirconium dioxide composites with 0, 2, 4, 6 and 8 vol. % of graphite particles are prepared by powder metallurgy technique. The samples are pressed at 900 MPa for 1 min after mixing the hybrid composite powders for 15 min by using a mechanical mixer, followed by sintering at 1160 oC for 3 hours. The hybrid composites are characterized by using an optical microscope. The wear test under dry sliding conditions was performed under various loads of 5, 10, 15 and 20 Newton and at a fixed sliding distance of around 1810 m. It is found that increasing graphite content results decrease in bulk and apparent densities in contrast with total porosity, apparent porosity, and water absorption. Alternatively, the increasing volume fraction of graphite particles improves the micro-hardness, diametral compressive strength and wear resistance till an optimum value up to 4 %, then severely reduction is observed. Whereas the wear resistance decreased by increasing the applied loads for all reinforcement content. The results, in conclusion, reveal that the hybrid composites at 4 % graphite particles relatively have high mechanical and wear properties, and it could be considered a suitable because of high corrosion resistance in our daily life applications.
Highlights
Composite materials have active properties and characteristics for use in most modern and essential applications such as space and transportation applications, especially in internal combustion engines as well as applications and marine industries
This study aims to investigate adding graphite particles on the nickel – 5 vol % zirconium dioxide matrix composites prepared by powder metallurgy technique, in order to provide essential information about the correlations between the graphite content and the physical, mechanical, and wear properties
Nickel – 5 vol.% Zirconium dioxide composite successfully reinforced with different content of graphite particles through traditional powder metallurgy technique
Summary
Composite materials have active properties and characteristics for use in most modern and essential applications such as space and transportation applications, especially in internal combustion engines as well as applications and marine industries. It is challenging to obtain a single material with various properties and features that can be used in complex applications. The composites are the solution for that [1]–[3], the composite materials consist of two main phases: the matrix and the reinforcement material. The reinforcement material gives strength and stiffness to the composites while the matrix material connects the reinforcement materials to transfer and distribute the load, in addition to protecting the composites from the external environment. Modern methods used to fabricate a composite structure are dependent upon structure configuration, material performance requirements, and production rates [4], [5].
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call