Economically, this may also translate into increased component life simply because the coating lasts longer. Improvement in the erosion resistance of the TBC system should result in a more consistent delta T gradient during service. It would be during the repair of the pipe system that a phase to ground fault. These coatings combine the enhanced performance characteristics of ZCY with the improved erosion resistance of ZTY coatings. There are three separate cases to be considered when complying with this. Also, multilayer or hybrid coatings consisting of the bond coat with subsequent coatings of zirconia-ceria-yttria and zirconia-titania-yttria were evaluated. Both coatings were evaluated in conjunction with a NiCr-Al-Co-Y2O3 bond coat. In addition, dense zirconia-titania-yttria (ZTY) coatings were developed with particle erosion resistance exceeding conventional stabilized zirconia coatings. Zirconia-ceria-yttria (ZCY) coatings were developed with low thermal conductivities, good thermal shock resistance and improved resistance to vanadium containing environments, when compared to the baseline yttria stabilized zirconia (YSZ) coatings. Two ternary ceramic plasma coatings are discussed with respect to their possible use in TBC systems. Although these systems have excellent thermal shock properties, they have shown themselves to be deficient for a number of diesel and aircraft applications. Advanced thermal barrier coating systems Current state-of-the-art thermal barrier coating (TBC) systems consist of partially stabilized zirconia coatings plasma sprayed over a MCrAlY bond coat.
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