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YSZ Grinding Media

What is YSZ Grinding Media?

YSZ Grinding Media is made of Yttria Stabilized Zirconia Polycrystal.

Zirconia, in its unstabilized form has monoclinic, square or cubic crystal phases. On partial stabilization by Yttria (Yttrium Oxide), the resultant phase is tetragonal endowing it with very high hardness & wear resistance along with high chemical inertness, making it the best material for grinding media applications.

After consistent efforts, the research team at Uniceram Advanced Materials has developed the grinding media that meets all the demands of the grinding and dispersion processes of the industries.

Click here for detailed information on Transformation Toughened Zirconia

Typical Applications of YSZ Media:

Paint Industry: For the high purity grinding of paints and creation of paint dispersions
Electronic Industry: Magnetic materials, piezoelectric materials, dielectric materials for high purity grinding where the media should not discolor the mix being ground or cause any impurity due to wearing of the media
  Food and Cosmetic Industry: It is used in food and cosmetic industry due to its lack of contamination to in the materials being ground
Pharmaceutical Industry: For high purity grinding and mixing in the Pharmaceutical industry due to its extremely low wear rate

Characteristics of YSZ Grinding Media

YSZ Grinding Media is very hard (> 9 on Mohs scale, diamond being 10), with a satin smooth surface finish
YSZ Grinding Media is chemically inert, thereby having a very high corrosion resistance.  It is impervious to most acids & alkalis
YSZ Grinding Media has a very high wear resistance, hence causing no contamination in the material being milled / ground / dispersed
YSZ Grinding Media has a density >6 gm/cm3, which makes it the most dense of the ceramic products

Material Properties of YSZ Grinding Media:

Property Specification
COMPOSITION ZrO2 94.6% 

Y2O3 5.4%

DENSITY > 6.0 gm/cm3
HARDNESS ON VICKERS ( HV ) 1250
HARDNESS ON Mohs >9
ELASTIC MODULUS 205 GPa
WATER ABSORPTION NIL
POROSITY NIL
FRACTURE TOUGHNESS >9 Mps.m

Comparison of Wear Rates of Various Media:

The below graphic is the summary of the results.
Click here for the details of the entire test


Advantages of Using YSZ Grinding Media:

YSZ Grinding Media has a density >6.0 gm/cm3 which is 2.5 times that of glass & 1.5 times that of Zircon & Alumina. Due to this high density, it may be used to mill even high viscosity compounds, into which other media may float.
Gains in Productivity: YSZ Grinding Media mills 6 times faster than Glass Media & 3 time faster than Zircon Media. Thus higher productivity may be achieved.
Very High Wear Resistance: There is no contamination by the YSZ Grinding Media in the material being ground, thus ensuring the quality of the material being ground.
Longer Service Life: YSZ Grinding Media has 25 times longer service life as compared to Glass Media, 15 times longer service life than MSZ Media & 5 times longer service life than Zircon Media.

Featured Section:

Comparison of the Wear Rates of Magnesia Stabilized Media to Yttria Stabilized Media: We tested the popularly available Magnesia Stabilized Media to Uniceram's YSZ Media. Click here to see why YSZ proves Superior to Magnesia Stabilized Media

Click Here to Download our Product Catalogue for YSZ Grinding Media
(PDF Format)

 

       Size Range:
 
                            Beads                      

Size (mm) Size
Range (mm)
0.5 0.5 to 0.7
0.8 0.8 to 1
1.5 1 to 2
2.5 2 to 3
4.5 4 to 5
5mm onwards Up to 55 mm



       Cylinders

Diameter (mm) Height (mm)
3 3
7 7
10 10
12.7 12.7