Yttrium stabilized zirconia balls are grinding media made of composite ceramic materials mainly composed of zirconia (ZrO ₂) and yttrium oxide (Y ₂ O3). The crystal phase structure is stabilized by yttrium doping, forming tetragonal or cubic crystals, with high density (6.0-6.2g/cm ³), ultra-high hardness (Mohs hardness 8.5-9), and low wear rate (≤ 4ppm/hr). Its phase transition toughening effect increases the impact strength by 30% -50%, making it suitable for high-speed working conditions of equipment such as sand mills and agitator mills. This medium can control aluminum impurity pollution below 3ppm in electronic ceramic powder grinding, and can achieve a reduction in ferrite particle size from 3 μ m to 1.8 μ m in magnetic material processing. It is widely used in paint and ink, nanomaterials, titanium dioxide and other fields
1 . Yttrium stabilized zirconium beads Specification ：
|
Composition |
ZrO2 94.5±0.2% , Y2O3 5.2±0.5% |
|
Density |
>6.0 g/cm3 |
|
Bulk Density |
>3.6g/cm3 |
|
Hardness |
9 Mohs |
|
Crushing Load |
>2.0 KN(2mm) |
|
Water Absorption |
0% |
2 . Yttrium stabilized zirconium beads Size:
FUDA offers a full-size specification of 0.1 60mm:
0.5-3mm particle size suitable for high shear conditions of sand mills,
The 5-20mm specification is specifically designed for mixing and grinding machines,
Balls larger than 20mm are used for the coarse grinding stage of rolling ball mills
The moisture content of the factory products is ≤ 0.1%, and they need to be stored in a dry environment to avoid changes in crystal structure
3 . Physical characteristics:
Yttrium stabilized zirconia balls adopt a tetragonal crystal structure, with uniform and dense grain size, a bulk density of 3.6-3.8kg/L, and a compressive strength exceeding 7500MPa. Its surface roundness is ≥ 98%, and the flowability of spherical particles is excellent, which can reduce the energy consumption of equipment operation [1-2]. Maintain chemical stability in acidic environments (pH ≤ 3) and withstand temperatures not exceeding 600 ℃ under high temperature conditions.
4 . Technical Advantage ：
Through yttrium stabilization process, the critical stress value for crystal transformation is increased to over 900MPa, and the wear rate is reduced by 70% compared to alumina medium. Experimental data shows that when using this medium to grind multi-layer ceramic capacitor powder, the average particle size can be stabilized at 0.45-0.55 μ m, and the grinding time can be shortened to 30 minutes. In the field of magnetic materials, the magnetic permeability is increased by 12%, and the average particle size of ferrite powder is reduced from 3 μ m to 1.8 μ m.
5 . Application Field ：
1 . Electronic material processing: used for ultrafine grinding of electronic ceramic powders such as BaTiO3 and BaCO3, controlling aluminum impurities ≤ 3ppm
2 . Chemical coatings: Suitable for high viscosity paint systems (viscosity ≥ 5000cps), achieving a dispersion effect of D90 particle size ≤ 2 μ m
3 . Mineral processing: In titanium dioxide grinding, the unit energy consumption output is increased by 40% compared to traditional media
4 . Biopharmaceuticals: Non polluting grinding that meets GMP standards, applied in the nanoscale preparation of drug carriers
Contact us
Tina
WECHAT / WHATSUP : +8618636559668
Email : tina@fudanewmaterial.com
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