Aluminum particles (Al) inherently contain a natural oxide (Al2O3) coating that limits rates of diffusion-controlled energy release and can prevent complete conversion the chemical available within an Al particle. Therefore, altering surface properties to reduce shell and/or transform chemistry are active areas research. This study used atmospheric pressure plasmas aluminum shell, then examined...

• Thermally processed and untreated Al particles were reacted as suspended powder. Phase fractions of the 2 O 3 produced are linked with global radiant fluxes. Two different heat transfer rates for fast slow burning identified. The experimental methods used condense-luminescence. Condense-luminescence is energy from gas to condensed phase transition. Thermal processing aluminum (Al) such anneal...

Deposition of coatings of aluminum, aluminum nitride and aluminum carbide on particulate carbon materials by means of an atmospheric pressure microwave plasma fluidized bed process is reported. Two types of short carbon fibers and a monocrystalline diamond powder were used as substrate. As source of aluminum trimethylaluminum was utilized with nitrogen and argon/hydrogen (5 vol% H2) serving as ...

In the present work, a facile approach to construct a nonvolatile resistive random access memory device based on the heterojunction of silver nanoparticles and aluminum oxide is reported. The device structure consisting of Aluminum-Aluminum oxide-Silver Nanoparticles-Aluminum is used to study the charge transport. The current-voltage measurements of this device clearly show the transition from ...

A simple theoretical model based on electric-field-assisted growth and dissolution of the barrier oxide has been proposed to understand the mechanisms for formation of a one-dimensional 1D anodic aluminum oxide AAO nanopore array. It is shown that formation of a one-dimensional horizontal nanopore array is the natural result of the self-adjusting effect of anodic oxidation. Because the electric...

The paper aims at development of TiO2, Ca5(PO4)3OH (hydroxyapatite, HA) and their multilayer coatings onto stainless steel, titanium and aluminum substrate using suspension plasma spraying. The total thickness of the coatings was in the range 10 to 150 μm. The suspension on the base of distilled water, ethanol and their mixtures was formulated with the use of fine commercial TiO2 pigment crysta...

Atomic layer deposition (ALD) is an industrially applied technique for thin film deposition. The vast majority of processes target flat substrates rather than powders. For ALD on powders, new are needed, as different reaction conditions required. Here, two setups described in detail, which enhance the process development first setup capable directly measuring vapor pressure a given precursor by...

A new material for microchannel plates (MCP) is proposed — anodic aluminum oxide. Microchannel plates made of this material may be much cheaper than with conventional lead glass MCP. Also a significantly smaller channel diameter (up to 70 nm) is easily achievable, which means better spatial resolution and the possibility to operate in strong magnetic fields. Methods and means are developed for ...

Fluctuation electron microscopy studies have been performed on several aluminum oxides exposed to different electrochemical conditions. Little is known about amorphous aluminum oxide structures and their relationship with their passivation behaviors. Corrosion studies have shown that exposure of aluminum oxide films to Cl ions in solution reduces the oxide's passivity, and this results in the o...

The aim of this study was to evaluate the shear bond strength of a composite resin to dental enamel, using three different surface treatments. Fifteen sound third molars were randomly assigned to three groups. The mesial and distal surfaces were flattened and covered using adhesive tape with a central orifice delimiting the adhesion area (7.07 mm2). Group I, the enamel surface was conditioned w...