MaterialsPhysical Properties

Our materials : Physical Properties

Assessment of chemical and physical properties of ceramics constitutes an essential step in their manufacture since they will decisively influence their final performances.

SOLCERA has a wide range of characterization techniques, from molecular to macroscopic scales

  • Spectrometry
  • Diffractometry
  • Microscopy
  • Laser diffraction analysis etc.

Alumina Zirconia Nitrides Boron carbide Transparent materials
Properties Units AF950 TS150 AF980 AF997 ZFME ZFYT Kersit HP B₄C MgF2 Spinel ZnS
Composition (mass %) 95% Al₂0₃ 97,6% Al₂0₃ 98% Al₂0₃ 99,7 % Al₂0₃ 97% Zr0₂ 95% Zr0₂ 91% Si₃N₄ 95%
B₄C
100% MgF₂ 100% MgAI₂0₄ 100% ZnS
Density g/cm³ 3,60 3,75 3,89 3,89 5,70 6,00 3,20 2,50 3,18 3,58 4,09
Hardness - Vickers GPa 15 15 15 18 11 13 16 28 6 13 2,9
3-point bending strength / biaxial (b) MPa 250 280 280 310 600 900 900 425 (4pts) 130 390 95 (b)
Elastic modulus GPa 250 330 330 310 210 220 315 440 140 270 90
Fracture toughness MPa (m)¹/² 3,8 3,8 4 4,8 8,5 10 7,5 3-4 2,2 0,6
Coefficient of thermal expansion x10⁶ 8,5 8,5 8 8,5 9,5 10 3,1 5 10 7,8 7,3
Thermal conductivity
(20° to 100°C)
W/mK 22 30 29 1,9 3 19 - 15,3 12
Thermal shock resistance ++ ++ + + +++ ++ +++ + ++ + +
Maximum use temperature °C 1500 1700 1500 1700 2000 1000 1400 - 600 1500 200
Electrical resistivity Ohm.cm > 10¹² > 10¹⁴ > 10¹⁴ > 10¹² > 10¹² > 10⁷ > 10¹⁰ > 10⁷ > 10⁷

This Chart is intended to illustrate typical properties of a selection of SOLCERA.
Property values may vary with method of manufacture, size and shape of part and may not be used as absolute values.

Typical properties of SOLCERA ceramics

Mechanical properties

High mechanical strength, low density, extreme hardness, toughness and great wear resistance.
Example :
Our boron carbide provides maximum ballistic protection efficiency with significant weight savings in military armor equipment.

Thermal properties

Our advanced ceramics remain stable even at very high temperatures, resist thermal shock and ageing and guarantee high resistance to climatic or chemical attack.
They show a low to moderate thermal conductivity and transparent / opaque properties other than for visible light.
Example :
Ceramic components for aircraft engines and propulsion systems for satellites. Magnesium fluoride infrared guidance windows for IR Seekers.

Electrical properties

Our ceramic components and hermetic ceramic-to-metal assemblies based on alumina guarantee optimal electrical insulation.
They are frequently used in high voltage applications with good dielectric strength, also called resistance to electrical breakdown.
Example :
Brazed high voltage electrical feedthroughs for medical imaging. Cathode and anode insulators for X-ray tubes.

Environmental characteristics

Ceramics are harmless to humans and eco-friendly due to their neutral and amorphous nature.
Example :
Hypoallergenic components based on zirconia for ceramic watches.

Transparence optique
électromagnétique
Transparence infra-rouge

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