NIKKATO, a Japanese agent, specializes in high-purity and fine alumina balls

NIKKATO, a Japanese agent, specializes in high-purity and fine alumina balls

NIKKATO, a Japanese agent, specializes in high-purity and fine alumina balls

In the preparation process of electronic materials such as MLCC (multi-layer ceramic capacitors), nano silicon negative electrode materials, CMP polishing slurries, etc., the purity, hardness, and dimensional accuracy of the grinding medium directly determine the final performance of the product. NIKKATO Corporation, JapanSSA-999S alumina ballAs a representative product of high-purity and high-performance grade (99.9%), with itsUltra high purity, hardness, and micrometer ball diameterBecoming the preferred choice for nanoscale dispersion and grinding of precision electronic materials.

1、 SSA-999S product positioning: High purity and high-performance precision grinding expert

SSA-999S belongs to NIKKATO alumina ballsHigh Purity&High Performance GradeDifferentiated positioning with SSA-999W, which belongs to the same 99.9% system:

Compared with the universal HD series (93% purity), the purity improvement of SSA-999S brings a qualitative leap, reducing impurity content by more than two orders of magnitude, especially achieving extremely strict control over metal impurities (such as Fe, Na ⁺) and radioactive elements (U/Th), ensuring that they do not affect the dielectric properties and reliability of electronic materials.

2、 Core technical parameters: combination of 99.9% purity and 1800HV hardness

SSA-999S is made of ultra-high purity alumina (Al ₂ O ∝ ≥ 99.9%) through precision sintering and surface treatment processes. Its key performance indicators are compared with those of the same series of products as follows:

1. Purity (99.9% Al ₂ O ∝)

The alumina purity of SSA-999S has reached99.9%This means that the impurity content is controlled withinWithin 0.1%For electronic components such as MLCC dielectric materials, piezoelectric ceramics, and magnetic materials, even metal impurities at the ppm level can lead to a decrease in dielectric performance or a risk of short circuits. SSA-999S controls the amount of metal leaching within＜0.1ppm(Compliant with FDA standards), eliminate contamination from the grinding source.

2. Ultra high hardness (1800 HV10)

Vickers hardness reaches1,800 HV10It is 1.6 times higher than the general-purpose HD (1100 HV10). Higher hardness means that when grinding high hardness materials such as silicon carbide, silicon nitride, and various ceramic powders, SSA-999S has an extremely low self wear rate (about 15 ppm/h), which not only extends the service life of the grinding medium but also further reduces micro powder pollution caused by wear.

3. Optimized density (3.9 g/cm ³)

density is3.9 g/cm³Approximately 65% of zirconia balls (6.0 g/cm ³). This feature enables SSA-999S to maintain sufficient grinding energy while having lower filling weight and lower equipment energy consumption, in line with the concept of energy-saving dispersion/crushing.

4. Excellent bending strength (450 MPa)

The bending strength reaches450 MPaIt is on par with SSA-999W and much higher than general grade products. In the high impact nano grinding process, the higher bending strength effectively prevents the grinding ball from shattering, ensuring the stability and consistency of the grinding process.

3、 Unique advantages: Small ball diameter and electrolytic polishing surface

1. Micron sized ball diameter specification

The significant feature of SSA-999S is itsSpecially optimized size specifications for precision grinding：

Compared to SSA-999W (1-25mm), SSA-999S has a size rangeFocus on tiny ball diameters of 0.5-5mmEspecially including0.5mm and 0.8mmSuper microspheres. This specification design enables it to meet:

• Nano scale dispersionUsing a ball diameter of 0.5-1mm can achieve nanoscale dispersion with D50 ≤ 1 μ m, suitable for high applications such as MLCC dielectric materials and nano silicon negative electrodes

• High specific surface area grindingMicro ball diameter provides a larger contact area, significantly improving grinding efficiency

2. Electrolytic polishing surface treatment

SSA-999S adoptsElectrolytic polishing surface treatment processHigh surface smoothness, with the following advantages:

• Extremely low metal leachingThe surface passivation layer effectively inhibits the leaching of metal ions, with a leaching amount of less than 0.1ppm

• Reduce initial pollutionThere is no need for a long pre run in period before using the new ball, it only takes 2-3 hours to reach a stable state

• Easy to cleanSmooth surface that is not easily adhered to residual materials, making it easy to switch and clean between batches