Chemical vapor infiltration

Composite number

Engineering

Pyrolysis

Materials science

Ceramic

Thermal conductivity

Carbon fibers

Porosity

Polymer

Waste management

Oxidizing agent

Matrix (chemical analysis)

Organic chemistry

Reinforced carbon–carbon

Fracture toughness

Composite material

Fiber

Chemistry

Ceramic matrix composite

Toughness

Ceramics International

Recent studies on carbon fiber-reinforced ultra-high temperature ceramic matrix (C/UHTC) composites fabricated by hot-pressing, chemical vapor infiltration, polymer impregnation and pyrolysis, and melt infiltration (MI) are reviewed. Various efforts have been made to improve these preparation processes and to combine two or more of these because they have both the advantages and disadvantages in terms of the processing time, operating temperature, and the porosity of the resulting C/UHTC composites. In addition, the parameters governing the fracture toughness, thermal conductivity, and recession behavior (in oxidizing environments) of these composites have been discussed. This review demonstrates that C/UHTC composites with Zr- or Hf-based UHTC matrices fabricated via MI are potential candidates for advanced heat-resistant structural materials.

Carbon fiber reinforced ultra-high temperature ceramic matrix composites: A review