Share this page by mail Technic Composite : FBD Zirconium Oxide
FBD Technical Composite
FBD is our strongest, highest density, premium product of the Zircar Zirconia range. FBD boards and cylinders are rigid refractory structures composed of ZYBF bulk fibres stabilized with yttria. Fibres used to manufacture FBD undergo multiple processing and heat treatments. It is composed of highly sintered fibre with the shortest fibre length contained in any of our rigid ZrO2 products. The finished FBD product is a tightly bonded, nearly dust free, hard, strong fibrous ceramic.
They have extremely high stability for use as high as 2,000 °C and can be exposed to significantly higher temperatures, depending on the application. It has good hot strength up to 1,700 °C, and can used as protection sleeve, insulation for industrial furnaces or setter for loads up to twice its weight. This product can be machined with conventional tooling.
Applications of FBD Composite
- Gasketing in high temperature wind tunnels.
- Insulation for laser machining applications
- Hot face insulation in solar thermochemical reactors
- Crucible insulation in crystal growth stations
- Oxygen / carbon protector sleeve in industrial sensors
Available FBD Composite
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FBD |
Dimensions |
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Square Board |
from 76.2 x 76.2x 6.3 mm |
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Rectangular Board |
from 228.6 x 457.2 x 6.3 mm |
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Cylinder |
from 12.7 x 19.0 x 152.4 mm |
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The dimensions depend on the article number. |
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Technical Data of FBD Composite
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Property |
Unit |
FBD |
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Composition |
ZrO2* |
Wt. % |
90 |
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Y2O3 |
10 |
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Typical Impurities |
HfO2 |
Wt. % |
1 to 2 |
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SiO2 |
0.12 |
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TiO2 |
0.14 |
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CaO |
0.09 |
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MgO |
0.03 |
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Fe2O3 |
0.04 |
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Al2O3 |
0.01 |
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Na2O |
0.01 |
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Colour |
white |
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Bulk Density |
g/cm3 |
1.4 |
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Porosity |
% |
76 |
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Operating Temperature** |
°C |
2,000 |
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Peak Temperature |
°C |
2,200 |
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Melting Point |
°C |
2,590 |
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Flexural Strength, Normal to Fibre Plane |
MPa |
8.27 |
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Compressive Strength, Normal to Fibre Plane, at 10 % compression |
MPa |
5.52 |
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Outgassing in Vacuum |
Nil |
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Dilatometric Softening Temperature |
°C at 10 psi |
1,400 |
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Thermal Expansion Coefficient RT to 1,180 °C (⊥ to Thickness) |
10-6.K-1 |
10.7 |
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Linear Shrinkage |
1 hr at 1,650 °C |
% |
0.0 |
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24 hrs at 1,650 °C |
0.9 |
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Thermal Conductivity (// to Thickness) |
at 400 °C |
Wm-1.K-1 |
0.24 |
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at 800 °C |
0.26 |
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at 1,100 °C |
0.31 |
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at 1,400 °C |
0.33 |
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at 1,650 °C |
0.35 |
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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.