Fiber reinforced UHTCs for extreme environments

Although research has successfully produced UHTCs with flexural strength up to 1 GPa, fracture toughness and thermal shock resistance still represent major concerns for the application of these ceramics in aerospace or in highly stressed environments. To address these issues, novel processing methods have been implemented to introduce elongated reinforcements (such C or SiC fibers) into UHTC-based matrices.

Short fiber reinforced composites:
A simple technology is applied to obtain reinforced ceramics using conventional powder milling techniques and sintering.

Continuous fiber reinforced:
Different technologies such as infiltration, lamination, sintering are combined to obtain incorporation of long fibers into UHTC matrices.