Nanoparticles are increasingly used in research and industry due to their enhanced properties compared to bulk materials.Nanoparticles are made of ultrafine particles less than 100 nm in diameter.This is a somewhat arbitrary value, but was chosen because in this size range the first signs of “surface effects” and other unusual properties found in nanoparticles occur.These effects are directly related to their small size, because when materials are produced from nanoparticles, a large number of atoms are exposed on the surface.It has been shown that the properties and behavior of materials change dramatically when constructed from the nanoscale.Some examples of enhancements that occur when increased hardness and strength, electrical and thermal conductivity are compounded by nanoparticles
This article discusses the properties and applications of alumina nanoparticles.Aluminum is a P group 3rd period element, while oxygen is a P group 2nd period element.
The shape of alumina nanoparticles is spherical and white powder.Alumina nanoparticles (liquid and solid forms) are classified as highly flammable and irritant, causing severe eye and respiratory tract irritation
Alumina nanoparticles can be synthesized by many techniques, including ball milling, sol-gel, pyrolysis, sputtering, hydrothermal, and laser ablation.Laser ablation is a common technique for producing nanoparticles because it can be synthesized in gas, vacuum or liquid.Compared with other methods, this technique has the advantages of rapidity and high purity.In addition, nanoparticles prepared by laser ablation of liquid materials are easier to collect than nanoparticles in gaseous environments.Recently, chemists at the Max-Planck-Institut für Kohlenforschung in Mülheim an der Ruhr have discovered a method for producing corundum, also known as alpha-alumina, in the form of nanoparticles using a simple mechanical method, a Very stable alumina variant.ball mill.
In the case where alumina nanoparticles are used in liquid form, such as aqueous dispersions, the main applications are as follows:
• Improve the density, smoothness, fracture toughness, creep resistance, thermal fatigue resistance and abrasion resistance of polymer products of ceramics
The views expressed here are those of the author and do not necessarily reflect the views and opinions of AZoNano.com.
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Post time: Mar-29-2022