ZetaBeads® are spherical, yttrium-stabilized zirconium oxide grinding media of a high density and hardness. In contrast to ZetaBeads® Plus and ZetaBeads® Nano their surface is not polished. ZetaBeads® are low-wear grinding beads that are used for the iron-free production of highquality products.
Available standard qualities
| Type | Fraction [mm] |
|---|---|
| ZetaBeads® 1.7 | 1.5 - 2.0 |
| ZetaBeads® 2.2 | 2.0 - 2.5 |
| ZetaBeads® 3.0 | 2.6 - 3.3 |
Chemical composition
| about (in weight %) | |
|---|---|
| ZrO2 + HfO2 | 94 |
| Y2O3 | 5 |
| Others | < 1 |
Mechanical properties
| Densitiy | 6.0 kg/l |
| Bulk density | ~3.6 kg/l |
| Young modulus | > 200 GPa |
| Vickers hardness | > 1100 HV |

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