UHTCs Archives | The American Ceramic Society

UHTCs

Superior carbide surface may provide sufficient ultra-high temperature ceramic for hypersonic aircraft

By Faye Oney / July 18, 2017

Researchers have created a carbide material that outperforms conventional UHTCs. Their discovery could lead to new coatings on hypersonic aircraft that can withstand extreme temperatures at Mach 5 speeds.

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Extreme testing: Mechanical testing of UHTCs at ultrahigh temperatures

By Eileen De Guire / December 11, 2012

These CT scans showing the formation of microcracks in ceramic composites under applied tensile loads at 1,750 degrees Celsius were obtained at Berkeley Lab’s Advanced Light Source using a unique mechanical testing rig. Credit: Ritchie; LBNL. “Failure is not an option” applies to ultrahigh temperature ceramics and ceramic composites for extreme environments. UHTC materials are…

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Video simulation shows violent fluid mechanics of hypersonic flight

By Eileen De Guire / May 26, 2012

Supercomputers were used to simulate exhaust temperature fluctuations in a scramjet engine operating at hypersonic velocities. Credit: Stanford University; YouTube. There is a lot of work exciting work being done on developing materials for hypersonic vehicles, such as the DARPA Falcon HTV-2. The cover story of the January-February issue of the Bulletin described work on…

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DARPA says hypersonic vehicles need better high-temp materials data; UCSB team shows how to measure strain at high-temps

By Eileen De Guire / April 24, 2012

Distributions of surface height and in-plane strain of an angle interlock C/SiC composite at 1,200°C, measured by DIC. Line scans (in red) are used to correlate strains with the underlying fiber weave. (Material provided by D.B. Marshall, Teledyne Scientific.) Credit: Frank Zok; UCSB. Last August DARPA conducted the second test flight of its hypersonic technology…

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