Xiamen Unipretec Ceramic Technology Co., Ltd.

China Manufacturer with main products: Alumina Ceramic, Zirconia Ceramic, Silicon Nitride, Boron Nitride, Ceramic Grinding Media, Ceramic Cutting Blade, Ceramic Dosing Pump,...

Home  >Products Catalog > Al2O3 Alumina Ceramic > Zirconia Ceramic Rings For Wearing And Sealing Application

Zirconia Ceramic Rings For Wearing And Sealing Application

FOB Price: 1.00 - 2.00 USD/Piece
Supply Ability: 10,000 Piece/Pieces per Month
Shipping: 30 days, Xiamen Port
Payment Terms: L/C, T/T, Western Union
In Stock
Export Markets: North America, South America, Eastern Europe, Southeast Asia, Mid East, Eastern Asia, Western Europe
Place of Origin: Fujian in China
Packaging Details: wooden case

Quick Details

  • Brand Name: UNIPRETEC
  • Model Number: N/A
  • Density: 6.05 g/cm3
  • Color: white
  • Compressive Strength: 2500 Mpa
  • Flexural Strength: 900 Mpa

Specifications

Zirconia is an extremely refractory material. It offers chemical and corrosion inertness to temperatures well above the melting point of alumina. The material has low thermal conductivity. It is electrically conductive above 600°C and is used in oxygen sensor cells and as the susceptor (heater) in high temperature induction furnaces. With the attachment of platinum leads, nernst glowers used in spectrometers can be made as a light emitting filament which operates in air.

Key Properties of Zirconium Oxide

- Use temperatures up to 1000°C
- High density
- Low thermal conductivity (20% that of alumina)
- Chemical inertness
- Resistance to molten metals
- Ionic electrical conduction
- Wear resistance
- High fracture toughness
- High hardness


Key Features of Some Advanced Technical Ceramics

Characteristics Unit 95 Al2O3 99 Al2O3  ZrO2 SSiC SiSiC B4C HPS3N4
Color white ivory white black black black dark gray
Density g/cm3 3.65 3.88 6.05 3.12 3.06 2.51  3.25
Young's Modulus Gpa 280 350 205 400 320 420 310
Vickers Hardness Gpa 14 20 12 25 22 36 22
Flexural Strength Mpa 280 300 900 400 300 370 850
Compressive Strength Mpa 1700 2000 2500 2200 2000 2900 2800
Thermal Conductivity W/(m?K) 25 30 2.2 100 130 35-40 27
Thermal shock resistance ΔT(C°) 220 180-200 400 350 220 130 450-650
Max. Working Temperature 1500 1700 850 1500 1300 1500 1200
Volume Resistivity ( 20  ) Ω?cm >10^15 >10^14 >10^12 >10^6 >10^6

_

>10^14

 


Typical Uses of ZrO2

- Precision ball valve balls and seats
- High density ball and pebble mill grinding media
- Rollers and guides for metal tube forming
- Thread and wire guides
- Hot metal extrusion dies
- Deep well down-hole valves and seats
- Powder compacting dies
- Marine pump seals and shaft guides
- Oxygen sensors
- High temperature induction furnace susceptors
- Fuel cell membranes

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