Search Results for YSZ thermal barrier coatings

This article discusses the influence of water vapor on the performance of YSZ thermal barrier coatings, particularly the oxidation resistance of the bond coat.

This article presents a brief overview of thermally sprayed thermal barrier coatings (TBCs) used in gas turbines that generate electrical power.

Thermal barrier coatings (TBCs) with segmented or cracked microstructures exhibit enhanced thermal cyclic behavior and erosion resistance, along with improved application economics, over conventional TBCs.

This article describes the development and evaluation of a novel atmospheric plasma spray torch designed to overcome limitations in coating internal diameter surfaces. A case study demonstrates the torch's effectiveness in producing high-quality thermal barrier coatings (TBCs) for turbine components, applying NiCoCrAlY+HfSi bond coats and 8 wt% YSZ topcoats with appropriate porosity levels. Analysis results confirm that this torch delivers comparable performance to conventional torches while enabling the critical capability of operating in confined geometries, addressing a significant gap in thermal spray applications for gas turbine engine components subjected to extreme operating conditions.

This article discusses some of the newer thermal barrier coating materials being considered for use in gasified coal-based turbines and how they compare with conventional materials in terms of bond coat oxidation and topcoat damage due to particle erosion and molten ash deposits.

This article describes work to develop a cost-efficient plasma gun capable of high deposition rates. Engineers analyzed both gun components and gas flow dynamics to design a gun that improves plasma stability. Considerable effort was spent on characterizing the use of the gun for spraying yttria-stabilized zirconia (YSZ) for thermal barrier applications.

New thermal and cold spray technologies are being developed to extend the lifespan of thermal barrier coating (TBC) systems at elevated temperatures. This article describes the relevant attributes of coating technologies such as high velocity air fuel, high velocity air plasma spray, and high pressure cold spray for use in TBC systems.

This article describes work being done at the University of Limoges to develop thermal spray coatings for use in new nuclear power plant designs.

The use of coatings to enhance the performance of components is one of the most powerful tools in materials engineering. This article highlights some examples of how thermal spray technologies are used to enhance surface properties for selected applications and industries.

What needs to be discovered, learned, and understood to advance thermal spray beyond existing practices? Is revenue a realistic indicator of progress and advancement or is it just a framework for a much bigger picture? This article reviews some past successes, failures, and unrealized potentials of industrial and manufacturing outcomes and provides details of the knowns and unknowns of the thermal spray portfolio.