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Zirconia Ceramics

Zirconium Oxide is widely used and has superior high temperature properties. When combined with compounds of yttria, strength and fracture toughness can be significantly increased. This makes some grades of Zirconia superior to most materials for abrasion and wear resistance, brittleness, and thermal shock resistance. Zirconia is electrical conductive above 900 °C.

Zirconia engineered ceramic parts can be formed by single axis pressing, isostatic pressing, injection molding, slip casting, or extrusion. Parts can "green machined" to near net size before firing and then "hard" ground using diamond tooling to tolerances less than 0.0002" (0.005 mm). Special grades of Zirconia can be metallized and/or brazed to metal parts. Although the final properties of Alumina ceramics will be determined by the manufacturing method, they generally will have the following properties:

Crystalline Zirconia

CRYSTAL PSZ is tetragonal form for Zirconia crystal, a totally different type of partially stabilized Zirconia. It is tougher, has higher hot strength, is stronger and harder than ceramics or sapphire with lower friction for bearings, wear surfaces and cutting tools.

Download PSZ data sheet

CERAFLEX is a special, ultra thin Zirconia in fully or partially stabilized grades used for fuel cells, oxygensensors, substrates, and instruments.

Go to CEREFLEX Thin Ceramics Page

Zirconia Ceramics

PROPERTIES	Condition	Units	PSZMg	PSZYt	FSZYt
Mechanical
Stabilization			MgO	Y203	Y203
Stabilization Percent (mole)		%	5.0	3.0	8.0
Bulk Density	20°C	g/cm3	5.70	6.00	5.70
Flexural (bending) Strength	20°C	Mpa	620	850	140
Elastic Modulus	20°C	Gpa	200	200	-
Hardness	20°C	kg/mm2	11.5	12	-
Fracture Toughness	20°C	Mpa*m1/2	11	8	-
Porosity	20°C	%	0	0	0
Thermal
Max. Working temp	-	°C	500	2400	2400
Coef. Thermal Expansion	25-1000°C	10-6 /°C	10.1	10.3	10.5
Thermal Conductivity	20°C	W/m°K	2.7	2.2	2.2
Available Forms	IsoPres, Die Pres, SlipCast, InjMold

Zirconium(IV) oxide Chemical names and formulas: Formula  ZrO2 Compound formula  O2Zr Name  Zirconium (IV) oxide IUPAC name  Dioxozirconium