Thermal cycling behavior of EBPVD TBC systems deposited on doped Pt-rich γ-γ′ bond coatings made by Spark Plasma Sintering (SPS)

► TBC systems have been made with Pt rich γ-γ′ bond coatings fabricated by SPS and YPSZ top coat deposited by EBPVD. ► Most of the TBC systems with γ-γ′ bond coatings have survived 1000-1 h cycles at 1100 °C under air without any spalling. ► Al and Pt contents in the γ continuous layer under the TGO have a strong correlation with the life span of the TBC system.