Refractory Open-Cell Foams: Carbon, Ceramic, and MetalBroad variety of materials and pore sizes with 70-97% open porosity

Refractory Open-Cell Foams: Carbon, Ceramic, and Metal

The four foam pics below below were recently taken and are higher resolution than the four that are currently on the websiteI provided earlier. I believe the plan is to use these to replace the header for all of the sections pages under Refractory Open-cell Foams.

Ultramet fabricates RVC foam in pore sizes of 3,3, 10, 20, 30, 45, 65, 80, and 100 ppi. In addition, Ultramet can fabricate can fabricate compressed RVC foam, which provides anisotropic properties.


  • High temperature insulation
  • Filled with aerogel (non-ablating)
  • Filled with carbon/phenolic (ablating)
  • Cryogenic temperature insulation (filled with aerogel)
  • Furnace fixturing and tooling
  • Core for lightweight, high stiffness sandwich panel
  • Catalyst support


  • Extremely lightweightlow density (0.045 g/cc)
  • High surface area
  • Thermally insulating
  • Electrically conductive
  • Easily machinable to near-net-shape
  • Stable at high temperatures
  • Resistant to thermal shock
  • Chemically iner
  • Variable pore size
  • Low thermal expansion
  • Ability to apply thin carbon/carbon facesheets to create lightweight sandwich panels

Single-ply C/C facesheet processed directly on surface of RVC foam

On the Ceramic and Metal Foams page, we need to make the changes shown in red below.


  • Energy storage devices
  • Heat sinks and heat exchangers
  • High-temperature insulation
  • Filled with aerogel (non-ablating)
  • Filled with carbon/phenolic (ablating)
  • Biomedical devices
  • Core for lightweight, high stiffness sandwich panel
  • Furnace fixturing and tooling
  • Molten metal filtration
  • Noise reduction
  • Lightweight mirrors
  • Fuel vaporizers/injectors
  • Hot gas filters
  • Catalyst support
  • Lightweight armor
  • Rocket engines


  • Resistant to thermal shock
  • High specific stiffness
  • High surface area
  • Low pressure drop
  • Tailorable pore size and foam density
  • Ability to apply solid ceramic or metal facesheets to create actively cooled structures
  • Fabrication from various ceramics and metals

Foam-core sandwich structure in which fully dense silicon carbide facesheets are integrally bonded to 80-90 vol% porous, open-cell silicon carbide foam (both 5x). Refractory metal foam/facesheet structures are also feasible.

The Properties of Foam Materials, Noise Reduction, Thermal Management, Mirrors, and Fuel Injectors pages don’t need content changes but they didn’t covert well from the old site to the new site (jumbled info, font size of captions, location of figures), so formatting of the new site should be compared to that of the old site.

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Learn More about related products and services.

Fabrication of Refractory Open-Cell Foam

Reticulated Vitreous Carbon Foam

Ceramic and Metal

Properties of Foam