Uncategorized - Céramique technique

SAPPHIRE

Basic properties

High mechanical strength
High thermal stability
High heat transmission
Chemically inert
Very high electrical insulation
Very high hardness
Very good wear resistance
Low friction coefficient
High temperature resistance
Good optical properties
Good resistance to acids
UV transparent, infrared and visible radiation.

Applications

Semi-conductor wafers
Watch windows
Electronical applications
Measuring tools.
Optical prisms and lenses
Pistons

Realisations

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CERAMIC PRECISION BALLS

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SHAPAL

Basic properties

Bexcellent workability
Can be used to make precision parts
Airtight in vacuum.
Very high thermal conductivity ( approx. five times higher than Alumina)
Very good mechanical resistance (Resistance to flexion = 30 kg/mm2) comparable to Alumina
Excellente electrical insulator
Low expansion coefficient
Resists to high temperatures
Low dielectric loss
Very high purity

Applications

Prototypes and small series
Parts for vacuum
Parts for electronics requiring electrical insulation and heat dissipation
Crucible for vapour deposition

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CERAMIC DISCS

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SIALON

Basic properties

Wear resistance
Consistency at high température
Hardness
Low thermal expansion coefficient
Resistance to corrosion and oxidation
Chemically inert
Low density compare to metals
Does not wet with molten metals

Applications

Excellent substitute of hard metals in industrial applications requiring strength at high temperature
Thermocouple protective tubing
Heating pipes
Industry of non ferrous metals: Aluminium melting…
Welding positioning slugs
Metal shaping tools

Realisations

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SILICON

Basic properties

Silicon material is a semi-conductor.
Its electrical conductivity is a lot inferior than metal ones.
It is not soluble in water (except at high temperature).
Silicon is attacked by hydrofluoric acid (HF) or mixed hydrofluoric and nitric (HNO3) depending on its phase.
The electrical conductivity of semi-conductor is between the insulators ones, and metal ones.

Applications

Semi-conductors
Photovoltaïc
Mechanical components
Aerospatial

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STEATITE

Basic properties

High electrical insulation at high temperature
Good mechanical resistance
Very low dielectric loss factor

Applications

Steatite properties are ideal for high frequency and high electrical insulation.
Steatite is an excellent material for electrical engineering because it can be easily and directly sintered in various shapes such as rings, spacers, beads…
Staetite has been used for many year in big industrial systems such as appliance, aviation, automotive…

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VITROCERAM

Basic properties

Vitroceram is a glass ceramic which outperforms thermal resistance standards.
Vitroceram has an expansion coefficient of virtually zero at temperature up to 800°C
It will resists to the strongest thermal shocks.
Vitroceram is ideal for heating systems, as it transmits 90% of radiation in the infra-red spectrum.
The contiunous working temperature of Vitroceram is 740°C.
It can be heated up to 800°C and dropped in water at 0°C with no risk of breakage.
Generally manufactured in thicknesses of 3 mm and 5 mm, it is also available in sheets:
20′” X 65″ (508 X 1650 mm)
30″ X 65″ (760 X 1650 mm)

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