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Modern industry cannot function without ultrafine alumina. Alumina powders with ultrafine or fine grain have a different surface electronic structure, and crystal structure, which results in surface effects, and smaller sizes, that cannot be found in macroscopic items. The material has excellent properties including high strength and hardness, abrasion and corrosion resistance, high temperatures, resistance to oxidation, good insulation, and a large area. Bioceramics are used widely in aerospace light source devices, as well as rare earth trichromatic pigments and integrated circuit chips. 1. Ceramic materials 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.
The use of ultrafine alumina can be used to synthesize aluminum alloy ultrafine composite materials and a new type composite ceramic 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 also be added to dispersion as a strengthening agent and additive. Ultra-fine alumina can also be used in the metamorphic nucleation of cast iron to increase wear resistance.

2, Surface protective layer material:
A new transparent ultra-thin material consisting ultra-fine particles of alumina coated on metals or ceramics 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 and chemical pipes.
This tool has a high wear resistance, but also a higher number of tools that can be used without coating. 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, atomic-coordination on the surface (surface area up to 60-400m2/g), and a smooth surface with reducing particle size. A catalyst or catalyst 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 the HDS of common alumina-loaded CoMo. 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. It is bonded to the body by the growth of new tissue into the ceramic pores. This material is widely used for artificial bones, joints, root implants, fractured braces, and internal fixation devices. It has also been successfully used for alveolar expansion and reconstructions of maxillofacial defect. facial features and repairs.
Research is currently focused on the development of bioceramic materials which simulate biological functions, artificial intelligence, and soft tissues such as artificial lungs.

Semiconductor materials
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 the ideal material for a moisture-sensitive thermometer and sensor.
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 layers of polymer, which can be used in sunscreens and cosmetics.
This is because ultrafine powder alumina has an array of superior electrical, optical, magnetic, mechanical, and chemical macroscopic characteristics compared to traditional particles. High purity ultrafine powder alumina has become the new research area for materials 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. Send an inquiry .

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