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, corrosion and abrasion resistance. It also resists high temperatures, is resistant to oxidation, and has a large surface 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 ceramics due to the superplasticity and the ultrafine alumina. Applications are wide.
Ultra-fine alumina can also be used to synthesize aluminum alloy ultra fine composite material 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 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:
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 the surface hardness and corrosion resistance of these materials, as well anti-fouling. This material can be used for surface protection on machinery, tools, chemicals pipes, etc.
This tool has a high wear resistance, which can increase the number of tools that are not coated. 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 (60-400m2/g), and a surface with fewer mismatched and under-oxygen bonding. This leads to softer surfaces and fewer mismatching and under-oxygen bonds 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 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 a good structural compatibility. It is a porous ceramic with a high bonding strength to the body tissues. It is also strong, has low friction coefficient and wears slowly. 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 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 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 a uniform surface and a low cost. 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 ultraviolet 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 non-hazardous plastic that can be used in sunscreens and cosmetics.
This is because ultrafine powder alumina possesses a number of superior electrical, magnetic and optical properties, as well as mechanical and chemical macroscopic qualities, compared to other 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 product manufacturer with 12 years of experience, is a leading ultra-fine alumina alumina powder producer. Contact us if you need high-quality ultrafine alumina. Send an inquiry .

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