Impact resistance of environmental barrier coated SiC/SiC composites

Yb2Si2O7 Environmental barrier coatings with reduced bond coat oxidation rates via chemical modifications for long life

“…Most of the current EBCs are variants of the second‐generation EBCs. Various aspects of current EBCs, including processing, volatility in water vapor, silica activity in Y 2 O 3 ‐SiO 2 and Yb 2 O 3 ‐SiO 2 systems, interactions with CMAS, stress analysis, fracture mechanism, impact damage, and oxidation, have been reported.…”

Effect of Yb2SiO5 addition on the physical and mechanical properties of sintered mullite ceramic as an environmental barrier coating material

“…However, quasi-plastic damage causes the development of radical cracking under repetitive cyclic contact fatigue and, finally, collapse [30]; therefore, it is thought that deeper displacement of the 6Yb-mullite sample will most likely be relatively harmful. This type of quasi-plastic damage behavior may be beneficial regarding the impact of foreign object debris on ceramic coatings for gas turbine application [31]. A particle that can enter a combustion gas stream with a velocity of 600 m/s can attack the coating while the turbine machinery is operating, which causes radial cracks and damage in the coatings.…”

Irradiation effects in helium implanted silicon carbide measured by X-ray absorption spectrometry

“…SiC as a basis for the composite is a wellknown material, which has already been widely investigated towards its behaviour at high temperature and under irradiation. In the non-nuclear field, SiC is widely investigated and used for aeronautics and space applications [2], in the nuclear field, it is mainly investigated for fusion-applications [3,4].…”