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, corrosion resistance and high temperature resistance. It also exhibits macroscopic quantum tunneling and quantum effects. 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 plastic ceramics due to the superplasticity and the low temperature plastics. Applications are wide.
Use of ultra-fine aluminum powder allows for the creation of a new composite ceramic material that has special properties and an aluminum alloy ultra-fine 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 an additive and for strengthening. 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 made up of ultrafine alumina particle coatings 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 an ultra-fine alumina coating that combines ceramics and cemented carbide. 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 contact area. 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 a good structural compatibility. The ceramic surface is porous and new tissue grows inside the pores. This creates a strong bond with the tissue. It is also very durable, has a low coefficient of friction, and wears out slowly. This material is widely used for artificial bones, joints, root implants, fractured braces, and internal fixation devices. The alveolar expansion and reconstruction of facial defects have also been successfully achieved. facial features or 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 many advantages, including 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 surface of alumina grains is coated with non-hazardous plastic that can be added into sunscreens and 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 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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