Nickel-coated carbon fibre (NiCCF) is an important composite material, which finds numerous engineering applications, primarily within: computer, telecommunication, automotive and military industries. In general, NiCCF can be produced by one of the three methods, namely: chemical vapour deposition (CVD), electroless, and electrochemical (galvanic) deposition of Ni on a carbon fibre tow material...

Electroless deposition of gold in monolayer amounts on hydrogen terminated Si(1 1 1) was studied by a variety of structure sensitive techniques. Rutherford back scattering data revealed a linear relationship between the Au coverage and the concentration of the Au solution used for deposition. Atomic force microscopy and surface X-ray diffraction studies indicated cluster formation, with the Au(...

Today the tool industry on a worldwide basis uses hard, wear-resistant, and low-friction coatings produced by different processes such as electrochemical or electroless methods, spray technologies, thermochemical, chemical-vapor deposition (CVD), and physical vapor deposition (PVD). In the current work, two different coatings, nitrocarburized (CN) and titanium carbonitride (TiCN) on M2-grade to...

Abstract Gold metallization of 3D printed polymer structures was conducted by a supercritical carbon dioxide (sc-CO 2 ) assisted electroless plating process. Precursor the Pd catalyst utilized in this study palladium bis-hexafluoroacetylacetonate for high solubility sc-CO . A Ni–P layer first formed on catalyzed structure as sacrificial sequential gold deposition. Electrical resistance metalliz...

The corrosion resistance of electroless nickel (EN) coatings on ferrous substrates is affected by coating porosity. Carbon and iron carbide are present in the microstructure of ferrous alloys. If the sites of carbon and iron carbide are not catalytically active to EN deposition as the rest of substrate surface, there is a possibility of pore formation on these sites. In the present study, the r...

Abstract Low temperature joining is desirable for aluminum-ceramics because aluminum has a large coefficient of thermal expansion. In the present work, Al2O3 to Al was performed at room by two-step deposition method including Ni electroless and Cu electrodeposition. The strength increased, fracture mode changed from Ni/Al2O3 interface that in substrate using porous or etching dense surface. Thu...

Gas evolution during electrochemical deposition has long been regarded as undesired and deliberately suppressed. Here, we show a new role of electrochemically evolved hydrogen bubbles, serving as both templates and reducing agent to form hollow Au nanoparticles via electroless deposition. Hollow gold nanoparticles with a complete nanocrystalline shell and a 50 nm hollow core were fabricated. By...

The utility of unmanned micro underwater vehicles (MUVs) is paramount for exploring confined spaces, but their spatial agility is often impaired when maneuvers require burst-propulsion. Herein we develop high-aspect ratio (150:1), multiwalled carbon nanotube microarray membranes (CNT-MMs) for propulsive, MUV thrust generation by the decomposition of hydrogen peroxide (H2O2). The CNT-MMs are gro...