typical-combustion-chamber-damagesTypical combustion chamber damages"Unbuttoning" of rows of cooling airboresReactions withcoke deposits(coking)Fretting atsocketconnectionsIncreased localoxidation and hotgas corrosionBulges anddeformationThermal fatigue cracksAreas that areburned-throughErosion throughspalling of smallthermal barrier coatingparticlesLarger thermal barrierfragments break out inzones with considerableplastic deformationsSulfidation incooler combustionchamber zones