ALUMINA C799

ALUMINA C799

ALUMINA C799

ALUMINA C799

Basic properties

Very hard Abrasion resistant Can be milled with great precision Can be polished Stable at high temperatures No open porosity Excellent electrical properties Chemically inert High corrosion resistant.

Applications

Mechanical components Pistons, pump stages Mechanical seals Sealing bushes Faucet keys and seats Electrical insulator Pyrometry Laboratory items, crucibles Vacuum items Welding nozzles.

Realisations

Chemical composition: Aluminium Oxide 99,7% / Silica: 0,05% / Magnesia 0,03 % Sodium Oxide 0,15% / Iron oxide 0,02% / Calcium Oxide 0,03% / Titanium Oxide <0,01 / Boron Oxide <0,02%

BORON CARBIDE

BORON CARBIDE

BORON CARBIDE

BORON CARBIDE (B4C)

Basic properties

Low thermal conductivity
Low density
Sensible to thermal shocks
Exceptionnal hardness
Very high resistance to compression
Excellent wear resistance
Good neutron absorption
High elastic modulus

Applications

Neutron absorption / radioactivity uptake
Buses pour boues abrasives
Nozzles for abrasive slurries
Balistic protection: amored plates, shielding…

Boron carbide (chemical formula approximately B4C) is an extremely hard boron–carbon ceramic material used in tank armor, bulletproof vests, and numerous industrial applications. With a Mohs hardness of about 9.497, it is one of the hardest materials known, behind cubic boron nitride and diamond.

B4C can be mirror polished and has a very good resistance to acids. It is refractory and chemically inert. However, it is less resistant to oxidation than Silicon Carbide.

Boron Carbide Production methods:
Hot pressing and Hot isostatic pressing are good means for producing such a ceramic.
B4C is fully dense and has a pure single phase shape.

Hot pressing has the inconvenient of limiting the available sizes and shapes that could be produced.
B4C is machined with diamond tools.

Realisations

associated products ↓

SILICON CARBIDE

SILICON CARBIDE

SILICON CARBIDE

SILICON CARBIDE

Basic properties

Low density
High thermal conductivity (close to Aluminium)
Good thermal shock resistance
Liquid and gaz proof
High refractoriness (can be used at 1450°C in air and 1800°C in neutral atmosphere)
It is not affacted by corrosion and do not wet with melted aluminium or melted zinc.
High hardness
Low friction coefficient
Abrasion resistance
Resists to basic and strong acids
Polisheable
High mechanical strength

Applications

Mechanical components
Rotating joints
Plain bearings, bases, pads
Pump components
Chemical components
Mirors
Balistic protection
Heat exchanger

Realisations

CARSIC INFILTRATED

CARSIC INFILTRATED

CARSIC INFILTRATED

CARSIC INFILTRATED

Basic properties

Impervious material (no porosity)
Tubes used for high temperature with heavier load
Strong resistance to oxidation

Big sizes coponents available
Good resistance to acids and strong alcali

Applications

Tubes and rollers for furnaces
Profiled beam and support

associated products ↓

BORON NITRIDE

BORON NITRIDE

BORON NITRIDE

BORON NITRIDE

Unique Properties for High-Performance
Industrial Applications

Combat®, a hot-pressed hexagonal Boron Nitride, exhibits a unique combination of chemical, electrical, mechanical and thermal properties, making it suitable for a wide range of high-performance industrial applications.

Combat Boron Nitride’s characteristics depend on the type and amount of binder, overall composition and the type of bond between layers. Backed with industry leading international technical support from Saint-Gobain, Combat provides a full spectrum of solutions in machinable blanks as well as custom finished shapes.

COMBAT AX05 – Does not use any binder and is self bonded, offering the highest purity for high temperature applications. Non-wet by almost all molten metals, AX05 is recommended for applications such as extreme high-temperature insulators and crucibles for high-purity processing.

COMBAT M AND M26 – Combine the moisture resistance of silica with unique properties of boron nitride. Differentiated by the amount of SiO2, Combat M offers unparalleled resistance to thermal shock while Combat M26 offers higher thermal conductivity. M and M26 are ideal for applications requiring extreme and exacting dielectric properties.

COMBAT ZSBN – Combines the non-wetting properties of boron nitride with extreme refractory and wear resistance of zirconia. ZSBN is widely used in a variety of molten metal contact applications.

COMBAT A – Uses boron oxide as a binder to create a hard, dense yet easily machinable product best used in inert and dry environments. It is ideal for general purpose high-performance applications.

COMBAT HP – Leverages Boron Nitride’s outstanding thermal shock resistance with Calcium Borate glass’s moisture resistance. HP is ideal for light metal processing application such as aluminum, magnesium and zinc, particularly electrical insulation applications for up to 1000°C.

BASIC PROPERTIES

Easily machinable to desired shapes and sizes
Exceptional Heat Resistance
High thermal conductivity
Low thermal expansion, excellent thermal shock resistance
Outstanding electrical insulation – even at high temperatures
High wet resistance to molten metals, slags and glass
Extreme corrosion and wear resistance

Applications

MOCVD setters and components
Insulators for high-temperature furnaces
Muffles and crucibles for Nitride and Sialon firing
Nozzles for powder metal atomization
Side dams for twin-roll casting
Continuous casting break rings
High temperature mechanical components such as bearings, valves, spacers
Crucibles and molds for molten metal processing

Target Markets

High Temperature Furnace construction
Ceramic Manufacturing
Semiconductor Industry
PVD coating
Microwave

Copyright ©Saint-Gobain

Realisations

associated products ↓

MULLITE C530

MULLITE C530

MULLITE C530

MULLITE C530

Basic Properties

Resists to high temperature
Porous
Good thermal shock resistance
High refractivity

Applications

Pipes for furnaces
Heating element supports
Hobs and hot plates

Chemical composition : Alumina 84,10% / Silica: 14,6% / Iron oxide 0,56% / Titanium oxide 0,24% / Calcium oxide 0,15%

Realisations

Pipes for furnaces
Heating element supports
Hobs and hot plates

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