Modern industry cannot function without ultrafine alumina. Alumina powders with ultrafine or fine grain have a different surface electronic structure, and their crystal structure has also changed. This leads to surface effects, and smaller sizes, that cannot be found in macroscale objects. The material has excellent properties including high strength and hardness, high abrasion resistance and corrosion resistance. It also has high temperature resistance and oxidation resistance. 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.
The use ultra-fine aluminum powder can be used to create a new composite ceramic material that has special functions, as well as 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 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 containing ultra-fine particles of alumina can be coated on metals, ceramics or hard alloys surfaces to improve their 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 an ultra-fine alumina coating that combines ceramics and cemented carbide. It is as tough and hard as cemented carbide, with the same wear resistance. The process efficiency is improved dramatically.

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-coordination on the surface etc. This leads to mismatching and under-oxygen bondings and surface smoothness as the particle size decreases. 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 contact area. The HDS of ultrafine alumina particles loaded Co-Mo is higher than the HDS of 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. The porous ceramic surface bonds well with body tissue, as the new tissue grows in the pores. It also has a low wear rate, a low friction coefficient and high strength. 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 or repair.
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 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, chemical, and macroscopic properties, 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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