Zirconium oxide (ZrO2 –also known as zirconia) is a material with very high resistance to crack propagation. Zirconium oxide ceramics also have very high thermal expansion and are therefore often the material of choice for joining ceramic and steel.

Zirconium Oxide (ZrO2) Properties:

• High thermal expansion (α=11 x 10-6/K, similar to some types of steel)
• Excellent thermal insulation/low thermal conductivity (2.5 to 3 W/mK)
• Very high resistance to crack propagation, high fracture toughness (6.5 to 8 MPam1/2)
• Ability to conduct oxygen ions

Zirconium Oxide (ZrO2) application:

• Technical Cutters
• Tubes and Pipes
• Zirconium Oxide-stabilized Substrates
• Bearing Technology in Automotive Engineering
• Seal Rings, Bearings and Sealing
• Components for Pumps