Hexamethyldisiloxane (HMDSO)/Graphene nanosheets (GNs) nanocomposite coatings were deposited by a dielectric barrier discharge at atmospheric pressure. Commercially available GNs incorporated into HMDSO precursor different concentrations up to 2 wt%. The analyzed using scanning electron microscopy (SEM) and nanoindentation test. Based on SEM images, it was found that the well distributed disper...

Although overlay coatings deposited via plasma transferred arc welding (PTAW) can effectively prolong the service life and improve performance of components, cracks pores tend to occur in high-hardness wear-resistant coating during deposition process. Further treatment is thus necessary quality. Herein, PTAW-deposited Ni-based was remelted using (PTA) under different remelting currents (RCs). T...

Pure carbon(C), nitrogen(N) and titanium(Ti) doped diamond-like carbon (DLC) coatings were deposited on silicon (Si) micro-molds by dc magnetron sputtering deposition to improve the tribological performance of the micro-molds. The coated and uncoated Si molds were used in injection molding for the fabrication of secondary metal-molds, which were used for the replication of micro-fluidic devices...

This article investigates the effect of contact ageing on fretting damage of an epoxy-based cathodic electro-deposited coating for use on automotive seat slide tracks (made of cold-rolled high strength steel). Static normal load was induced at the contact between the coating and an AISI52100 ball for a certain duration. It was identified that plastically deformed contact area increased logarith...

For the purpose of improving the working reliability of the blisk (integrally-bladed disk) under severe environment, a passive vibration reduction method by depositing a hard coating on both sides of blades is developed and then investigated systematically. Firstly, an analytical model of the blisk-deposited hard coating is taken into account. Secondly, by using the Oberst beam theory and axial...

Stainless steel powder was coated on mild steel substrate using plasma coating. The porous coating thus obtained was modified using laser irradiation. The oxidation behaviour of the plasma coated as well as laser treated material was studied in air at 1073 K. There was considerable decrease in oxidation rate of mild steel after plasma coating as expected. In addition the oxidation resistance im...

Abstract This study investigates the optimal conditions to deposit a thermal barrier coating using micro- and nanopowders in air plasma spraying (APS) process. The influence of APS process parameters on thickness, porosity hardness yttria-stabilized zirconia (YSZ; ZrO 2 × 8Y O 3 ) coatings deposited with single-electrode gun was determined. temperature velocity melted particles were determined ...

Plasma-sprayed 45S5 bioactive glass coatings were manufactured using two types of powder feedstocks (commercial and lab-made glass) plasma torches (single triple cathode) to analyse their influence on the microstructure bioactivity coatings. Besides, volatilisation oxides such as Na2O P2O5 during deposition was studied. All microstructurally characterised by scanning electron microscopy, X-ray ...