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Zirconium oxide (ZrO2)

Zirconium oxide - one of the most refractory metal oxides.
In industry, zirconia is used in the production of refractory materials based on zirconium, ceramics, enamels, glass. Zirconia is used as a superhard material.

(Zr+Hf)O2 (min)™

99.5

SiO2 (max)˜

0.04

Fe2O3(max)˜

0.008

TiO2 (max)˜

0.0015

Na2O (max)˜

0.02

Al2O3(max)˜

0.0005

Calcia stabilized fused zirconia

ZrO2+HfO2

SiO2

TiO2

Fe2O3

Al2O3

MgO

CaO

95.21

0.22

0.17

0.08

0.27

0.03

3.80

Yttrium-stabilized zirconia

Chemical composition (%)

ZrO2

Y2O3

SiO2

Na2O

Al2O3

Fe2O3

K2O

MgO

Cl

94.8+/-0.5

5.2+/-0.5

<0.045

<0.02

<0.01

<0.015

<0.01

<0.01

<0.08

  

 

 

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