The Influence of Reactive PS-PVD Process Parameters on the Microstructure and Thermal Properties of YbZrO Thermal Barrier Coating.

Ytterbium zirconate (YbZrO) is one of the most promising materials for yttria-stabilized zirconia (YSZ) replacement as a thermal barrier coating (TBCs) application. In the presented report, the experimental synthesis of YbZrO coating using novel Reactive Plasma Spray Physical Vapor Deposition (Reactive PS-PVD) is described. The obtained coating, irrespective of the power current (1800, 2000 and 2200 A), was characterized by a hybrid structure and a thickness of about 80-110 μm.

Degradation of nonmodified and rhodium modified aluminide coating deposited on CMSX 4 superalloy.

The Ni-base superalloy CMSX 4 used in the turbine blades of aircraft engines was coated with rhodium layer (0.5-μm thick). Next coated CMSX 4 superalloy was aluminized by the CVD method.