X. L. Jiang, C. B. Liu, Central South University, Changsha, China; F. Lin, Beijing General Research Institute of Mining and Metallurgy, beijing, China
In this paper, thermal barrier coating (TBC) materials and TBC deposition methods such as air plasma spray (APS), electron beam physical vapor deposition (EB-PVD), laser assisted chemical vapor deposition (LACVD) are briefly reviewed. Nanostructured 7-8wt.% yttria stabilized zirconia (7-8YSZ) TBC by air plasma spraying of powder and new TBC with novel structure deposited by solution precursor plasma spray (SPPS) are compared. Plasma spray conditions, coating forming mechanisms, microstructures, phase compositions, thermal conductivities, and thermal cycling lives of the APS nanostructured TBC and the SPPS nanostructured TBC are discussed. Future works on these two kinds of TBCs are presented.
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