NANOTECH AI2O3 ALUMINIUM OXIDE NANOPARTICLES
NANOTECH AI2O3 is composed by aluminium oxide nanoparticles and can assume different phases. It can be used in many applications where acid and alkaline resistance, low friction and high thermal/low electrical properties are desired (including advanced ceramics and superconductors).
- CHEMICAL NAME: AI2O3
- PHASE: Corundum/Gamma
- PURITY: >99,90%
- COLOR: White
- APS: <30nm/5nm
- MORPHOLOGY: Spherical
- TRUE DENSITY: 3,9g/cm3
- CAS N. 1344-28-1
- PACKAGING: Different packages depending on your needs
NANO ALUMINIUM OXIDE APPLICATIONS
The nano aluminium oxide particles (or alumina) exhibit strong ionic interatomic bonding, giving rise to their desirable material characteristics. They have strong acid and alkali resistance, even at elevated temperatures. They exist in different crystalline phases which all revert to the most stable hexagonal alpha phase at elevated temperatures.
Nano Ai2O3 is widely employed in the electronics and mechanics fields thanks to its high thermal conductivity, low electrical conductivity (it can be considered an insulator) and its catalytic properties (especially referred to Gamma AI2O3 nanoparticles). Aluminium nanoparticles are highly effective catalysts thanks to their structure (volume and size of pores, degree of crystallinity, phase composition and composition of the surface). For instance, when they are added into solid rocket fuel, they help improve combustion speed and considerably increase combustion heat and combustion stability. The burning rate of solid propellant can be 5-20 times higher using aluminium nanopowders compared to powders with larger particle sizes.
Gamma alumina has an high surface area and a large volume of open mesoporosity, which allow feed molecules to penetrate rapidly and uniformly to catalytic sites. Whereas, Alpha aluminium oxide plays a critical role in the production of countless advanced ceramic materials and ceramic-based applications, thanks to its high toughness, fire resistance, anti-friction and insulating properties.
It is a popular core and filler material in nanocomposites for any number of purposes. In particular, it’s unique heat transfer properties, remarkably low friction, versatile structure and general sturdiness make it highly valuable. Low friction and high biocompatibility makes alpha aluminum oxide nanopowder important in the manufacture of countless biomaterials, including the production of advanced implants and cardiovascular applications. Adding about 5-10% of aluminium nanoparticles into normal aluminium powder improves the sintering processes of ceramics, with high heat-transfer performance, increased density, and enhanced thermal conductivity of sinter (even under low temperatures due to the large surface and superficial atom ratio).
As with other nanomaterials, alpha-phase alumina nanopowder has seen a surge of interest in its potential applications in producing fluids with unique properties (i.e. advanced heat transfer fluids). Its low friction combined with exceptional durability makes alpha-phase aluminum oxide nanopowder a favored additive for any number of composites, as it typically offers a great enhancement of wear-resistance (i.e. coatings production).
Alumina is refractory (high-temperature component for heat insulation), abrasive (composed of means for ultra-fine-polishing), absorbent (capture hydrocarbon impurities from the air), chemosensitive and adsorbent (gas and liquid adsorption chromatography), inert carrier (during liquid-distribution chromatography).
They can be employed as desiccants (for drying gases) helping to create protective atmospheres for a long-term storage of food and pharmaceuticals, as sorbents of radionuclides from waste waters of nuclear power plants, as sorbent of the ions of metals from solutions of their salts, or as inert (reinforcing) fillers.
Still, known uses in several products include: burner discharge lamps, substrates of integrated circuits, shut-off elements ceramic pipeline valves, prostheses, etc. AI2O3 nanoparticles can also be used for additional applications: Dispersion-strengthening, catalyst support, water and air depuration treatments, transparent conductive coatings, drug delivery, sources for IC board or package, transparent optical coatings, materials surface coatings.
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