Composite : ZYFB Zirconium Oxide
ZYFB Technical Composite
Zirconium oxide boards types ZYFB-3 & ZYFB-6 are rigid refractory structures composed of ZYBF bulk fibres which are nearly 100 % zirconia phase stabilized with yttria. These ceramics have high insulating properties that excel at extremely high temperatures and in severe environments such as corrosive, oxidizing and reducing atmospheres.
Fibres used to manufacture these ZYBF-3 and ZYBF-6 products undergo multiple processing and heat treatments. They have a good dimensional stability up to 1,650 °C and can be used as insulation in fused quartz processing, heat shield and setter for loads up to twice its weight at temperature up to 1,400 °C.
ZYBF composites are machinable with traditional tools
Applications of ZYFB Composite
- High temperature insulation
- Zone separator in directional solidification furnaces
Available ZYFB Composite
ZYBF boards and cylinders are available at two different densities:
• ZYFB-3 is our lowest density product at 0.48 g/cm3 and benefits of an extremely low thermal conductivity.
Usual Applications: hot face insulation in fused quartz processing, zone separator in directional solidification furnaces used to manufacture jet turbine blades.
• ZYFB-6 is medium density product at 0.96 g/cm3 and has a better mechanical strength than ZYBF-3 products.
Usual Applications: IR source insulation in FTIR spectrometer, insulation in nuclear meltdown experiments.
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ZYFB-3 & ZYFB-6 |
Dimensions |
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Square Board |
from 152.4 x 152.4 x 6.4 mm |
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from 304.8 x 304.8 x 6.4 mm |
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The dimensions depend on the article number. |
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Technical Data of ZYFB Composite
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Property |
Unit |
ZYFB-3 |
ZYFB-6 |
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Composition |
ZrO2* |
Wt. % |
90 |
90 |
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Y2O3 |
10 |
10 |
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Typical Impurities |
HfO2 |
Wt. % |
1 to 2 |
1 to 2 |
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SiO2 |
0.12 |
0.12 |
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TiO2 |
0.14 |
0.14 |
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CaO |
0.09 |
0.09 |
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MgO |
0.03 |
0.03 |
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Fe2O3 |
0.04 |
0.04 |
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Al2O3 |
0.01 |
0.01 |
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Na2O |
0.01 |
0.01 |
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Colour |
white |
white |
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Bulk Density |
g/cm3 |
0.48 |
0.96 |
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Porosity |
% |
92 |
84 |
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Operating Temperature** |
°C |
1,800 |
1,800 |
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Peak Temperature |
°C |
2,200 |
2,200 |
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Melting Point |
°C |
2,590 |
2,590 |
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Flexural Strength |
MPa |
0.60 |
2.10 |
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Compressive Strength at 10 % compression |
MPa |
0.29 |
1.59 |
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Outgassing in Vacuum |
None |
None |
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Dilatometric Softening Temperature at 10 psi |
°C |
1,180 |
1,240 |
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*1-2 % weight hafnia (HfO2) occurs naturally with zirconia (ZrO2) and does not affect performance.
**Maximum use temperature is dependent of variables such as chemical environment and stresses; both thermal and mechanical.
Physical variables included in this documentation are provided by way of indication only and do not, under any circumstances, constitute a contractual undertaking. Please contact our technical service if you require any additional information.