ZYFB Zirconium Oxide Composite

Overview: ZYFB Zirconium Oxide 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 Zirconium Oxide Composite

  • High temperature insulation
  • Zone separator in directional solidification furnaces

Available ZYFB Zirconium Oxide 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.

ZYFB-3 & ZYFB-6

Dimensions

Square Board

from 152.4 x 152.4 x 6.4 mm
to 152.4 x 152.4 x 38.1 mm

from 304.8 x 304.8 x 6.4 mm
to 304.8 x 304.8 x 38.1 mm

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

Technical Data of ZYFB Zirconium Oxide Composite

Property

Unit

ZYFB-3

ZYFB-6

Composition

ZrO2*

Wt. % 

90

90

Y2O3

10

10

Typical Impurities

HfO2

Wt. %

1 to 2

1 to 2

SiO2

0.12

0.12

TiO2

0.14

0.14

CaO

0.09

0.09

MgO

0.03

0.03

Fe2O3

0.04

0.04

Al2O3

0.01

0.01

Na2O

0.01

0.01

Colour

white

white

Bulk Density

g/cm3

0.48

0.96

Porosity

%

92

84

Operating Temperature**

°C

1,800

1,800

Peak Temperature

°C

2,200

2,200

Melting Point

°C

2,590

2,590

Flexural Strength
(// to Fibre Plane)

MPa

0.60

2.10

Compressive Strength at 10 % compression 
(// to Fibre Plane)

MPa

0.29

1.59

Outgassing in Vacuum

None

None

Dilatometric Softening Temperature at 10 psi

°C

1,180

1,240

*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.

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