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Refractory Metals - Composites -Special Alloys - Ceramics -Tungsten - Titanium


Marketech's Metal Tech Group provides Refractory metals, composites and Special alloys for aerospace, oilfield, industrial, electronic, medical, and defense applications. We provide finished components, bar stock, sheet, tubes, wire, and rods of a wide range of compositions. For large production, we offer MIM, metal Injection molding.

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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
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
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

Structure diagram

3D structure

Basic properties
Molecular weight  123.223 g/mol
Phase  solid (at STP)
Melting point  2700° C
Boiling point  5000° C
Density  5.89 g/cm3

Chemical identifiers
GAS number  1314-23-4
PubChem CID  62395

NFPA label

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