Zirconia (ZrO2) Stabilised with Yttria - Supplier Data by Goodfellow

Background

Zirconia stabilised with Yttria has similar properties to those of Zirconia stabilised with Magnesia, although it is harder and tougher. It also has a finer grain structure.

The non-woven fabrics are felts fabricated by mechanically locking fibres, and firing at a high temperature.

The fabrics are flexible and chemically unreactive, being especially stable to hot caustic. The properties listed below are those of the sheet form.

Key Properties

The key properties of Zirconia stabilised with Yttria are tabulated below.

Applications

Applications of Zirconia stabilised with Yttria include thermal insulation, filtration and catalysis.

Table 1. Key properties

Mechanical Properties
Compressive strength ( MPa ) 2000
Hardness - Vickers ( kgf.mm-2 ) 1250
Tensile modulus ( GPa ) 200
Tensile strength ( MPa ) 300-600
Physical Properties
Density ( g.cm-3 ) 5.9
Thermal Properties
Coefficient of thermal expansion ( x10-6 K-1 ) 10 @ 20-1000
Melting point ( °C ) 2700
Specific heat ( J.K-1.kg-1 ) 400-500 @ 25
Thermal conductivity ( W.m-1.K-1 ) 2.5 @ 20
Upper continuous use temperature (°C ) 2200
Properties Zirconia - stabilised with Yttria Non-Woven Fabric
Property Value
Compressive Strength MPa 0.096
Density g.cm-3 0.24
Melting point °C 2590
Porosity % 96
Specific Heat @ 25 °C J.K-1.kg-1 545
Thermal Conductivity @ 20 °C W.m-1.K-1 0.5
Upper Continuous Use Temperature °C 1930

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