What Are The Upmarket Applications for Ultra-fine Alumina Powder
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 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, 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.
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 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 be used, for example, as metamorphic nucleation when casting cast iron laps. The wear resistance of the cast iron laps is increased by up to several times.
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, 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. 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-surface coordination, etc. This leads to mismatching and under-oxygen bonding on the surface 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 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 a 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 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.
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 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 alumina is coated on the surface with a non-hazardous material that can also added to sunscreens or 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 products manufacturer with 12 years of experience, is a leading ultra-fine alumina product manufacturer. Contact us if you need high-quality ultrafine alumina.
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