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 surface area. Bioceramics are used widely in aerospace light source devices, as well as rare earth trichromatic pigments, chemical catalysts and precision ceramics. 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 ceramics due to the superplasticity and the ultrafine alumina. Applications are wide.
With the use of ultrafine aluminum powder, a new composite ceramic material can be synthesized with 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 also be added to dispersion as a strengthening agent and additive. Ultra-fine alumina can be used, for example, as metamorphic nucleation when casting cast iron laps. The wear resistance of the cast iron can then be increased by up to several times.

2, Surface protective layer material:
This new transparent ultra-thin material consists of ultrafine alumina particle coatings on metals and ceramics. It also has anti-fouling properties, anti-fouling Dust and other functions. 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, but with a much higher wear resistance. 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 chemical reaction's surface. The HDS of ultrafine alumina particles loaded Co-Mo is higher than that for common alumina 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. Its high strength, low coefficient of friction, and low wear rate are due to the fact that the new tissue grows in the pores on the ceramic surface. 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 an ideal material for a moisture sensitive sensor or wet electric thermometer.
The ultra-fine alumina substrate is also a common material. It has good 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 alumina is coated on the surface with a layer that is non-hazardous and can be used in 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 to 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. Send an inquiry .

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