Porous Ceramics Properties

In this section you will find some of the properties presently available for our foams. Properties in grey colour were taken from the literature, averaging Si-SiC materials properties with a similar microscopic structure

ErbiSiC-R Foam Properties

Computed tomograpy 3D rendering of ErbisicR (20×20x20mm) foam. (Courtesy of RX Solutions)

Porosity 10 PPI	Low density	Medium density	High density
Foam density [g/cm3]	0.253	0.323	0.407
Normalized density	0.09	0.114	0.144
Av. Strut Thickness [mm]	0.766	0.912	1.012
Flexural strength [MPa]	1.083	2.388	3.267
Compression strength [MPa]	2.552	-	7.275
Thermal conductivity [W/mK]	4	6	9

Foam properties 10 PPI

Bulk material density [g/cm3]

Macroporosity [%]

Microporosity [%]

Surface area [m2/m3]

Medium density

2,830

> 87%

< 1%

551,862

Residual flexural strength of low density ErbisiR foams ageing into a flat burner @ 25 kW power

	After 10 h	After 100 h	After 1′000 h	After 10′000 h
Av. Residual M.O.R .	60 %	76%	67%	30%

Bulk Properties

Density	2.83 g/cm3
Open Porosity	0.0 %

Mechanical Properties
Flexural Stress	203 MPa
Young’s modulus	264 GPa

Thermal Properties
CTE, linear	4.30 µm/m-°C (@RT)
Specific Heat Capacity	0.94 J/Kg-K (@RT)
Thermal Conductivity	85.1 W/m-K (@RT)
Maximum Service Temperature, Air	1450 °C

Bulk Composition

XRD analysis: blue line for Erbisic foam, red line for liquid phase sintered SiC

As a result of XRD analysis the Erbisic foam is composed by alfa SiC and metallic Si.