Diesel, gas and turbine engines are being operated at increasingly higher temperatures to improve combustion performance and reduce environmental impact, especially in the aerospace and land-based power industries. To maintain system reliability at these higher temperatures, ceramics protective coatings are part of the design and operation.
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Coatings
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Market-leading array of zirconium dioxide powdersZirconia-based ceramic coatings, usually stabilized with dopants like yttria, have demonstrated superior performance in providing the best combination of thermal insulation, wear, oxidation and corrosion resistance. In addition to their chemical properties, these ceramic thermal barrier coatings are capable of forming the microstructure and porosity necessary to achieve optimum performance.
Saint-Gobain ZirPro offers a comprehensive range of zirconium oxide powders to meet the needs of the coating process:
- Monoclinic Zirconias from the CC, CS, and CF families offer a combination of chemical purity, particle size distribution and reactivity. In addition to fine particle size distributions, CZ and CZP grades offer higher chemical purity (>99,9%) for increased durability of the ceramic coatings.
- Yttrium pre-stabilized zirconias are fully stabilized by 8wt% Y2O3 homogeneously distributed within the zirconia crystallographic lattice. They are obtained by chemical processes to meet the highest chemical purity standards. For more information, please contact us.
All coatings technologies can be addressed with ZirProZirPro powders are suitable for the three major methods of coating:
- Air plasma spray using zirconia-based hollow spheres, fused and crushed grains, or agglomerated and sintered granules
- Electron beam physical vapor deposition (EBPVD) using pre-sintered ingots
- Suspension plasma spray uses stable suspensions of sub-micron zirconium oxide powders
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