Ceradyne Ceralloy® 147-1B Reaction Bonded Silicon Nitride (Si3N4)

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Ceradyne Ceralloy® 147-1B Reaction Bonded Silicon Nitride (Si3N4) (discontinued **)
Categories:	Ceramic; Nitride
Material Notes:	Ceralloy® 147 Reaction Bonded Silicon Nitride (RBSN) is a high purity grade of silicon nitride. RBSN has excellent thermal shock resistance and outstanding compatibility with non-ferrous molten metals. This lower cost alternative to the fully dense silicon nitride grades can be manufactured to close tolerance without the need for expensive diamond grinding. Features: High Purity Net Shape Fabrication Applications: Industrial Applications Electrical Insulators Sputtering Targets Information provided by Ceradyne, Inc. Ceradyne was acquired by 3M in 2012. The product line has been extensively renamed and reconfigured.
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Physical Properties	Original Value	Comments

Porosity	30 %
Weibull Modulus	10

Mechanical Properties	Original Value	Comments
Vickers Microhardness	800	HV (0.3); kg/mm²
Abrasive Hardness	360	Abrasive Wear Resistance Parameter
Modulus of Elasticity	175 GPa
Flexural Strength	190 MPa
Poissons Ratio	0.21
Fracture Toughness	2.50 MPa-m½
Shear Modulus	72.3 GPa	Calculated

Electrical Properties	Original Value	Comments
Electrical Resistivity	1.00e+14 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	3.20 µm/m-°C @Temperature 20.0 - 1000 °C
Thermal Conductivity	14.0 W/m-K

Descriptive Properties
Purity, %	>98
Theoretical Density, %	70
Thermal Shock Parameter, °C	330

**
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CCERDN40 / 718

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