Thermal cycling failure mechanism and damage quantification of PS-PVD sprayed Yb2Si2O7 environmental barrier coating

Key Points

• Damage quantification reveals critical insights into thermal cycling failure mechanisms affecting Yb2Si2O7 coating.
• Thermal cycling tests showed significant degradation patterns indicating a failure rate of over 40%.
• Assessment using thermal cycling simulations elucidates specific failure mechanisms and their impacts on coating integrity.
• Research supports the need for enhanced environmental barrier coatings to improve durability under thermal stress.