What Are The Upmarket Applications for Ultra-fine Alumina Powder
Modern industry cannot function without ultrafine alumina. Alumina powders with ultrafine or fine-grained grains have a surface electronic and crystal structure that is different from macroscopic objects. This leads to surface effects, small sizes, and other surface properties. The material has excellent properties including high strength and hardness, abrasion and corrosion resistance, high temperatures, resistance to oxidation, and good insulation. Bioceramics are used widely in aerospace light source devices, as well as rare earth trichromatic pigments, chemical catalysts, and precision ceramics. 1. Ceramics and composites:
In conventional ceramics the addition of ultrafine powder alumina can increase the toughness and reduce the sintering temp. It is possible to obtain low temperature plastic ceramics due to the superplasticity and the low temperature plastics. Applications are wide.
Alumina ultra-fine powder can be used for the production of a new composite ceramic material that has special properties and an aluminum alloy ultrafine composite material. SiC-Al2O3 is the most important of these materials, with a flexural resistance that increases from 300-400MPa to 1GPa.
The ultra-fine alumina powder can be used for dispersion strengthening, and also as additives. Ultra-fine alumina can also be used in the metamorphic nucleation of cast iron to increase wear resistance.
2, Surface protective layer material:
The use of a new transparent ultra-thin material consisting ultra-fine particles of alumina on metals, ceramics or hard alloys can be used to improve surface hardness and corrosion resistance. Other functions include anti-fouling. This material can be used for surface protection on machinery, tools, chemicals pipes, etc.
This tool has the advantage of combining ceramics and cemented-carbide materials. It is as tough and hard as cemented-carbide, it offers a greater wear resistance, and can produce more uncoated tools. It can be multiplied many times, and processing efficiency is greatly improved.
3. Catalysts and their carriers:
Alumina ultra-fine has a good pore-size distribution, a high pore-volume, pore-surface area up to 60-400m2/g, atomic-surface coordination, etc. This leads to mismatching and under-oxygen bonding on the surface and surface smoothness as the particle size decreases. A catalyst or carrier with a high contact surface is ideal for degradation, creating an uneven atomic structure, and increasing the contact area. The HDS of ultrafine alumina particles loaded Co-Mo is higher than that for common alumina particles loaded Co-Mo. The HDS of the catalyst.
The main application of catalyst and carrier is g-Al2O3, which is widely used in automobile exhaust gas purification, catalytic combustion, hydrodesulfurization, petroleum refining, and polymer synthesis.
4. Bio- and medical materials
The ultrafine alumina ceramic bioceramic is not significantly corroded in a physiological milieu and has good structural compatibility. The ceramic surface is porous and new tissue grows inside the pores. This creates a strong bond with the tissue. It has a low friction coefficient and possesses low wear. This material is widely used for artificial bones, joint restoratives, root implant, fractured braces, and internal fixation devices. It has also been successfully used for alveolar expansion and reconstructions of maxillofacial defect. It can be used to repair facial features.
Research is currently focused on the development of bioceramic materials which simulate biological functions, artificial intelligence, and soft tissues such as artificial lungs.
Ultra-fine powder alumina is sensitive to external moisture because of its large surface area. Changes in the ambient temperature can cause rapid changes to surface or interface electron transport, and also ion valence. Ultra-fine alumina AC isoelectric impedance changes linearly between humidity 30 - 80%. This AC impedance has fast response, high reliability and sensitivity. It is a moisture sensitive sensor that can be used with a wet electric thermometer.
The ultra-fine alumina substrate is also a common material. It has excellent electrical insulation and chemical durability. Substrate Materials for Devices and LSIs Are Widely Used in the Microelectronics Industry, Electronics Industry, and Information Industries.
6 Optical materials
Nanoscale Alumina absorbs ultra violet light. When excited with certain wavelengths, it produces light waves that correspond to particle size. It can serve as a protective film on the phosphor layer of a compact fluorescent light.
Ultra-fine Alumina is an excellent absorber of ultra-violet light. The addition of ultra-fine Al2O3 to compact fluorescent bulbs can improve lamp yield and reduce light decay.
The surface is coated with non-hazardous plastic that can also added to sunscreens or cosmetics.
This is because ultrafine powder alumina has an array of superior electrical, magnetic and optical properties, as well as mechanical and chemical macroscopic qualities, compared with traditional particles. High purity ultrafine powder alumina has been developed as a new research field around the globe in recent years. One of these directions.
Tech Co., Ltd., a chemical products manufacturer with 12 years of experience, is a leading ultra-fine alumina product manufacturer. Contact us if you need high-quality ultrafine alumina.
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