FBD Zirconium Oxide Composite

Overview: FBD Zirconium Oxide 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 Zirconium Oxide 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 Zirconium Oxide Composite

FBD

Dimensions

Square Board

from 76.2 x 76.2x 6.3 mm
to 304.8 x 304.8 x 38.1 mm

Rectangular Board

from 228.6 x 457.2 x 6.3 mm
to 228.6 x 457.2 x 76.2 mm

Cylinder

from 12.7 x 19.0 x 152.4 mm
to 203.2 x 254.0 x 152.4 mm

The dimensions depend on the article number.
Customized designs are available on request.

Technical Data of FBD Zirconium Oxide Composite

Property

Unit

FBD

Composition

ZrO2*

Wt. % 

90

Y2O3

10

Typical Impurities

HfO2

Wt. %

1 to 2

SiO2

0.12

TiO2

0.14

CaO

0.09

MgO

0.03

Fe2O3

0.04

Al2O3

0.01

Na2O

0.01

Colour

white

Bulk Density

g/cm3

1.4

Porosity

%

76

Operating Temperature**

°C

2,000

Peak Temperature

°C

2,200

Melting Point

°C

2,590

Flexural Strength, Normal to Fibre Plane

MPa

8.27

Compressive Strength, Normal to Fibre Plane, at 10 % compression

MPa

5.52

Outgassing in Vacuum

Nil

Dilatometric Softening Temperature

°C at 10 psi

1,400

Thermal Expansion Coefficient RT to 1,180 °C (⊥ to Thickness)

10-6.K-1

10.7

Linear Shrinkage 
(⊥ to Thickness)

1 hr at 1,650 °C

%

0.0

24 hrs at 1,650 °C

0.9

Thermal Conductivity (// to Thickness)

at 400 °C

Wm-1.K-1

0.24

at 800 °C

0.26

at 1,100 °C

0.31

at 1,400 °C

0.33

at 1,650 °C

0.35

*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.

FBD Zirconium Oxide Composite (167.04k)

FBD Zirconium Oxide Composite

Zirconium Oxide Fibre (326.87k)

Technical datasheet: Zirconium Oxide Fibre

Composite Materials (387.24k)

Composite Materials

FAQs that can help you in this category

What is the difference between a calcium silicate board and a mica board?

Calcium silicate boards have a low density (200–1,000 kg/m³), low thermal conductivity (~ 0.05–0.35 W/m·K) and high temperature resistance of up to 1,000°C. They are used as structural insulators.

Mica boards (phlogopite or muscovite) have great dielectric strength (>20 kV/mm) and temperature resistance up to 500–1,000°C, depending on the type. It must be permanently compressed between 2 other boards to preserve its mechanical integrity (the silicon binder degrades at high temperature). Use of mica composite requires particular attention: please contact Final Advanced Materials for more information.

Can rigid composites be machined with a CNC machine?

Yes, the inorganic composites produced by Final Advanced Materials can be CNC machined. Machining of calcium silicate-based (CaSiO₃) refractories or derived materials of the insulating boards type involves specific aspects relating to their low density, high porosity and low mechanical cohesion. Although these composites are not hard, they pose a high risk of scaling and crumbling: loads must therefore be minimised, and stripping of material must be avoided. The resulting powder is very abrasive and it is therefore essential that a dust extraction system is installed on your machinery. We can machine these materials in our production shop.

What insulating technical composite should I choose for continuous thermal use of up to 1,000°C?

For continuous use at 1,000°C, Final Advanced Materials recommends composites made of ceramic fibres or calcium silicate. These materials have a low thermal conductivity (~0.08–0.35 W/m·K) and high dimensional stability. Nanoporous composites can go as low as 0.02–0.04 W/m·K but are more mechanically fragile. The choice depends on your requirements: thermal insulation or mechanical resistance. We require a complete description of the application and of the stresses before we can recommend the most suitable product.

What is the mechanical strength of compressed high-temperature composite panels?

Final Advanced Materials' high-temperature composite panels have resistances ranging from 1 to 40 MPa when compressed, depending on the density.

Light insulating materials (fibres and microporous materials) are limited (~1–5 MPa), while denser composites (reinforced silicate, zirconia) can resist up to 10–20 MPa and even as high as 40 MPa in the case of a calcium silicate with a density of 1,300 kg/m3.

Specifically: all inorganic composites which are capable of withstanding exposure to high temperatures (>300°C) have no elasticity and are therefore quite fragile.