Zirconia ceramic beads, also known as zirconia beads, are a high-performance industrial material. The following will provide a detailed introduction to their composition and structure, characteristics, application areas, and production processes:
1 . Composition and Structure
Main Ingredients : The main component of zirconium ceramic beads is zirconia (ZrO ₂), and usually a small amount of stabilizers such as yttrium oxide (Y ₂ O3) are added. For example, yttrium stabilized zirconia beads contain 95% zirconia and 5% yttrium oxide.
Crystal Structure : At room temperature, zirconia has three crystal structures, namely monoclinic phase, tetragonal phase, and cubic phase. By adding stabilizers and special preparation processes, zirconia ceramic beads can maintain a tetragonal structure at room temperature, which endows the beads with good mechanical properties and stability.
2 .Specifications:
0.1-0.2mm,0.2-0.3mm,0.3-0.4mm
0.4-0.6mm,0.6-0.8mm,0.8-1.0mm
1.6-1.8mm,1.8-2.0mm,2.0-2.2mm
2.2-2.4mm,2.4-2.6mm,2.6-2.8mm
4,5,6,7,8,9,10,12,15.17,20,25,30,40,45,50etc.
3 . Characteristics
1. High hardness: The Mohs hardness can reach 8-8.5, second only to a few substances such as diamond and corundum, and has good wear resistance, allowing it to maintain its shape and performance for a long time in applications such as grinding and polishing.
2. High density : The density is about 6g/cm ³, and the higher density allows zirconium ceramic beads to generate greater impact force during the grinding process, improving grinding efficiency.
3. Good chemical stability * *: It can maintain its structural stability in high temperature, strong acid, and strong alkali environments, and is not prone to chemical reactions with other substances. It can be used for grinding, dispersion, and other processes in corrosive environments.
4. High toughness : It has excellent toughness, impact resistance, is not easily broken under high-speed operation and high pressure working conditions, and can withstand large external forces without damage.
5. Low Wear : The self wear rate is extremely low, generally reaching the ppm level. For example, the self wear of yttrium stabilized zirconia beads is usually ≤ 3ppm/h, which not only reduces the cost of use, but also reduces pollution to the processed material.
6. Excellent electrical insulation performance: With high electrical resistivity, it can be used as an insulation material in the electronics industry, effectively preventing short circuits and current leakage.
7. Good light transmission performance : It has certain applications in the field of optics and can be used to manufacture optical components in devices such as lasers and optical fibers.
8. Good biocompatibility: Excellent performance in biomaterial research, able to be well compatible with living organisms, reduce rejection reactions, and can be used in fields such as dental materials and bone substitute materials.
4. Application Fields
Grinding and dispersion: Widely used in the ultrafine grinding and dispersion of non-metallic minerals, coatings, inks, paints, dyes, titanium dioxide, pesticides, magnetic materials, new energy lithium batteries and other industries.
Surface Treatment: Suitable for sandblasting the surfaces of various steel, aluminum, and other non-ferrous metal alloys to remove oxides, rust, sand, coatings, and burrs. It can also be used for surface finishing of automotive aluminum alloy wheels and other components to improve surface quality and aesthetics.
-Electronic industry: Due to its excellent electrical insulation performance, it can be used to manufacture insulation components in electronic components, such as ceramic capacitors, thermistors, etc. It can also be used in fields such as semiconductor polishing slurry.
Biomedical : Utilizing its good biocompatibility, it is used in the dental field to make dental crowns, bridges, etc., and can also be used as a bone substitute material to repair bone defects.
-Other fields: Adding zirconium ceramic beads to refractory materials can improve the high temperature resistance of refractory bricks; In the papermaking industry, it can be used for grinding heavy calcium carbonate; In the cosmetics and pharmaceutical industries, it can be used to grind nanoscale powders to prevent contamination of materials.
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