Modern industry cannot function without ultrafine alumina. Alumina powders with ultrafine or fine grain have a different surface electronic structure, and the crystal structure has also changed. This leads to 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, chemical catalysts and precision ceramics.
1. Ceramics and composites:<br />
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.<br />
The use ultra-fine aluminum powder can also be used to create a new composite ceramic material that has special functions, 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.<br />
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:<br />
This new transparent ultra-thin material consists of ultrafine alumina particle coatings on metals, ceramics and hard alloys. It improves surface hardness and corrosion resistance. This material can be used for surface protection on machinery, tools, chemicals pipes, etc.<br />
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 improves dramatically.
3. Catalysts and their carriers:<br />
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.<br />
The main application of catalyst and carrier is γ-Al2O3, which is widely used in automobile exhaust gas purification, catalytic combustion, hydrodesulfurization, petroleum refining, and polymer synthesis.
4. Bio- and medical materials<br />
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 high level of strength, a low coefficient of friction, and possesses a low rate for wear. This material is widely used for artificial bones, joint restoratives, root implant, fractured braces, and internal fixation devices. It has also been successfully used for alveolar expansion and reconstructions of maxillofacial defect. facial features and repairs.<br />
Research is currently focused on the development of bioceramic materials which simulate biological functions, artificial intelligence, and soft tissues such as artificial lungs.
5 Semiconductor Materials<br />
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 electronic thermometer.<br />
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:<br />
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.<br />
Ultra-fine Alumina is an excellent absorber of ultraviolet light. The addition of ultra-fine Al2O3 to compact fluorescent lamp can improve lamp yield and reduce light decay.<br />
The surface is coated with non-hazardous a polymer, which can be used in sunscreens and cosmetics.<br />
This is because ultrafine powder alumina has an array of superior electrical, optical, magnetic, mechanical, and chemical macroscopic characteristics compared with 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.<br />
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Tech Co., Ltd., a leading manufacturer of ultrafine alumina, has over 12 years’ experience in chemical product development and research. You can contact us by sending an inquiry if you are interested in high quality ultrafine alumina.<br />
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