Why is Duocel® silicon carbide foam so special?

The matrix of cells and ligaments is completely repeatable, regular, and uniform throughout the entirety of the material. Duocel® silicon carbide (SiC) foam is a rigid, highly porous and permeable structure.

Physical Characteristics of Duocel® Silicon Carbide Foam* (8% Nominal Density)

Compression Strength200 psi(1.38 MPa)
Flexural Strength400 psi(2.76 MPa)
Shear Strength100 psi(.69 MPa)
Mohs Hardness9 Mohs
Young’s Modulus4 × 105 psi(2.76 MPa)
Knoop Hardness (100gm)2500
Poisson’s Ratio0.22
Bulk Thermal Conductivity
· 482°F (250°C)3.05 BTU/ft · hr · °F(5.28 W/m · °C)
· 1832°F (1000°C) 1.07 BTU/ft · hr · °F(1.85 W/m · °C)
· 2642°F (1450°C) .77 BTU/ft · hr · °F(1.34 W/m · °C)
Coefficient of Thermal Expansion3.4 BTU/ft-hr-F(5.8 W/m-C)
· Room Temperature 1.22 × 10-6 in/in · °F(2.2 × 10-6 m/m · °C)
· 392°F (200°C) 2.06 × 10-6 in/in · °F(3.7 × 10-6m/m · °C)
· 932°F (500°C) 2.56 × 10-6 in/in · °F(4.6 × 10-6 m/m · °C)
· 1292°F (700°C) 2.72 × 10-6 in/in · °F(4.9 × 10-6 m/m · °C)
Bulk Resistivity at Room Temperature · 4 × 105 ohm · in(1.016 × 105 ohm · cm)
Sublimation Point4892°F(2700°C)
Max Continuous Use (Inert)3992°F (2200°C)
Oxidation Resistance3002°F(1650°C)

Silicon carbide (SiC) has high thermal conductivity. Because of the high surface area of Duocel® foam, heat transfer to/from fluids flowing through the foam is greatly accelerated.

Duocel® silicon carbide foam is also ideal for use with phase change materials (PCM) because of the large amount of surface area, which increases coupling to PCM.

Please visit our thermal conductivity page in the technical data section for a more in depth explanation of how materials and properties effects the thermal conductivity of Duocel® foam.

Duocel® silicon carbide (SiC) foamcan be used in electrochemical processes that require low electrical and fluid flow resistance. This is in stark contrast to most ceramics, which do not conduct electricity. Duocel® SiC supplements its strength in this type of application with its increased ability to withstand extreme temperatures.

Please visit our electrical conductivity page in the technical data section for a more in depth explanation of how materials and properties effects the electrical conductivity of Duocel® foam.

For Duocel® silicon carbide (SiC) foams weight it is exceptionally strong. This strength is also extended to high temperatures. On top of that SiC is is very scratch resists at 9 Mohs.

Duocel® silicon carbide (SiC) foam is structurally stable at elevated temperatures. It has a very low coefficient of thermal expansion and is resistant to thermal shock.

Duocel® silicon carbide (SiC) foam can be made up to 1” thick at 100 PPI. Larger pore sizes can be made thicker. Please contact us for more info.

Duocel® silicon carbide (SiC) foam resists oxidation up to 3002F. SiC also has high resistance to acid corrosion.

It has a hardness that reduces the mechanical wear of the surface of Duocel® SiC foam.

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