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.

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 Composite

Property		Unit	ZYFB-3	ZYFB-6
Composition	ZrO₂*	Wt. %	90	90
Composition	Y₂O₃	Wt. %	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.