Effect of graphite particles on physical and mechanical properties of nickel matrix composite

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.

ABS/Silicon Dioxide Micro Particulate Composite from 3D Printing Polymeric Waste

“…On the other hand, there was a slight decline to 20.3 MPa after this point in elastic modulus at a silica dioxide weight of 15%. The contact features between the silica dioxide particles and the polymer are attributed to the degradation in the mechanical properties of the particulate reinformed composite [ 116 , 117 ]. Filling temperature, filling speed, filling sequence, film thickness, filler percentage, and manufacturing aspect are all variables that can be controlled and can affect the results significantly [ 118 ].…”

Impact of graphite particle surface modification on the strengthening of cross-linked polyvinyl alcohol composites: A comprehensive investigation

“…Higher graphite rates also led to decreased ultimate tensile strength (UTS) and Brinell hardness values. Hammood et al 48 investigated Nickel-5 vol.% Zirconium dioxide composites with varying graphite particle contents. Powder metallurgy was used for fabrication, followed by optical microscope characterization.…”

Progress in-situ synthesis of graphitic carbon nanoparticles with physical vapour deposition

“…Graphitic carbon particles [1] are widely used for structural health monitoring [2], medical treatment [3], sensing technology [4], cutting tools [5], and tribological applications [6]. These graphitic particles are recognised to regulate electrical conductivity [7,8], thermal management [9,10], damping capacity [11,12], corrosion resistance [13,14], and wear resistance [15][16][17] in numerous industrial products.…”

“…These coatings were recognised as diamond-like carbon (DLC) coatings having a distinguished hardness, low friction, and higher scratch resistance. Investigations into DLC coatings have since produced three research streams; (1) improvement in DLC quality and resolving limitations; (2) commercialisation and re-coating; and (3) exploring the fundamental mechanisms and building blocks which combine to produce such superior carbon films.…”