Material

The Right Composition for Each Application

For ceramic components, the composition of the material is crucial. With Technical Ceramics, these properties can be specifically modified and enhanced for specific cases. By choosing and adjusting the suitable material composition, the material can be perfectly adapted to the ambient conditions. The basic component of any Technical Ceramics product are the binding agents and the pure, fine powder, which are sintered in a high temperature furnace to become a finished component. By varying the powder and developing proprietary binding agents, CERIX has brought its materials to perfection.

Properties of CERIX Technical Ceramics

High Temperature Resistance

The heat resistance reaches far beyond 1000°C - Technical Ceramics are thus often the only alternative for high temperature applications.

High Wear Resistance

The excellent mechanical properties of Technical Ceramics ensure minimal abrasion and long service life, even under harsh conditions.

Hardness

The extreme hardness of Technical Ceramics makes them suitable for handling high pressure and adverse conditions.

Chemical Resistance

Technical Ceramics are resistant to many chemicals such as acids and brines, and are therefore noncorrosive.

Good Insulation Properties

Technical Ceramics display both electrical and thermal insulation properties.

Biocompatibility

Technical Ceramics are suitable both for the medical and food sectors: the materials are 100% compatible with the human body.

Available Materials

Aluminum Oxide
Zirconium dioxide
Alumina Toughened Zirconia (ATZ)
Zirkonia Toughened Alumina (ZTA)
Steatite

Aluminum Oxide

AI203

The material has a uniquely diversified range of applications because of its numerous degrees of purity. We offer aluminum oxide with a purity ranges from 96.0% to 99.8%.

Application

  • Wear parts for the textile and the machine engineering industry
  • Suitable for high temperatures and corrosive environments, e.g. in laboratories
  • Insulating parts for electronics and electrical engineering

Properties

  • Electrical insulation
  • Thermal resistance
  • Resistance to thermal shock
  • Hardness
  • Pressure resistance

Zirconium dioxide

ZrO2

Zirconium dioxide has the unique feature that it impedes the spread of cracks through the so-called transformation toughening mechanism. No other ceramic material shows such a high fracture toughness combined at the same time with such high stability.

Application

  • Sensor Technology (lambda sensors) for oxygen ion conduction
  • Components that face frequent temperature changes, e.g. draw dies and high-temperature insulating parts
  • In cases where high fracture toughness is required, e.g. for medical instruments

Properties

  • Thermal insulation
  • Thermal resistance
  • Flexural Strength
  • Electrical insulation
  • Fracture toughness

Alumina Toughened Zirconia (ATZ)

ATZ

With this kind of mixed ceramic, a small amount of aluminum oxide is added to the zirconium oxide to significantly improve the wear-resistance, elasticity and toughness.

Application

  • Bearings and guide parts for machine engineering
  • Medical implants

Properties

  • Thermal insulation
  • Flexural Strenth
  • Electrical insulation
  • Temperature and thermo shock resistance
  • Fracture toughness

Zirkonia Toughened Alumina (ZTA)

ZTA

With this mixture of ceramics, a small amount of zirconium dioxide is added to the aluminum oxide which significantly improves the hardness and stability and simultaneously increases the toughness.

Application

  • Schneidstoffe zur Zerspanung
  • Ventile, Zahnräder
  • Sensoren
  • Für höchste mechanische Belastungen

Properties

  • Hardness
  • Resistance to pressure
  • Resistance to thermal shock
  • Reistance to temperature
  • Flexural Strenth

Steatite

Steatite

Steatite belongs to a group of silicate ceramics and is composed of magnesium silicate. Because of its excellent processability, the material can be produced economically.

Application

  • Isolators and fuses
  • High frequency technology
  • Especially used in the electronics and automotive industry

Properties

  • Thermal insulation
  • Electrical insulation
  • Resistance to thermal shock

Material Development

Work with us to create the material that best suits your requirements. In cooperation with our partners in Research and Development, we are able to develop innovative materials with enhanced properties. Whether high insulation properties or special functional ceramics are desired, we will find the perfect material for you. We also offer composite materials: let us know your challenge and we will work with you to develop the ideal solution for your product.

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Overview of Material Properties

Material group Generic Aluminium oxide Zirconia Mixed ceramic Steatit
CERIX Nomenclature CX-A960-P CX-A997-C CX-A998-A CX-A999-A CX-PSZ-C CX-TZP-A CX-ATZ-C CX-ZTA-C CX-S221-P
Manufacturing Technique Pressing CIM AM AM CIM AM CIM CIM Pressing
Specification AI2O3 96,0% AI2O3 99,7% AI2O3 99,8% coarse-grained AI2O3 99,8% fine-grained ZrO2 3,7mol% Y2O3-PSZ ZrO2 3 Y2O3-TZP ATZ ZTA C221
Density (g/cm3) Mechanical 3,8 3,92 3,96 3,96 6,02 6,07 5,5 4,16 2,7
Hardness HV (GPa) 15 17 14,5 18 14 13 14,5 17,3 n.a.
Compressive Strength (MPa) 2000 3500 3800 4000 2000 2200 2300 5000 850
Flexural Strength 4-point (MPa) 400 380 360 (3-point) 430 1200 1000 1800 800 140
Fracture Toughness K1C (MPa*m1/2) 4 4,3 4,3 4,3 10 10,5 9 6 n.a.
Young’s Modulus (GPa) 310 380 300 380 205 205 260 410 110
Surface (µm) * depending on the state of the injection molding / pressing tool Rz 5,1* Rz 3,6* Ra 1,3 Ra 0,4 Rz 3,6* Ra 0,6 Rz 3,6* Rz 3,6* Rz 13,0*
Thermal Expansion Coefficient (10-6/K) Thermal 8 8 8 8 10 10 9,5 8 9
Thermal Conductivity (W/mK) 24 28 37 30 2 3 3 35 3
Electrical Resistance at 20°C (Ωm) Electric 1014 1014 1015 1015 1013 1013 1013 109 1011
Electrical Resistance at 600°C (Ωm) 106 106 106 106 106 106 105 105 105

The above are to be regarded as indicative values, which are transferable to real components only to a certain extent. We therefore cannot assume any liability for these parameters in practical application cases. The parameters of the end product depend on the production process, component geometry and powder particle size. We are glad to provide our expertise to assess the suitability of a material for your practical application.

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