Solar Processing for the Glazing of ZrO2-Y2O3 Thermal Barrier Coatings: Reduction of Crack Initiation
Author:
Ferriere and Alain1, Lestrade Laurent1
Affiliation:
1. CNRS-IMP, Centre du four solaire Felix Trombe, BP5, 66125 Odeillo, France
Abstract
The glazing of thermal barrier coatings using concentrated solar energy has already been demonstrated, but crack initiation appeared as a major drawback of this processing. In this paper, the thermo-mechanical effects resulting from the fast heating at high temperature were modeled. Crack initiation was found to result from high temperature gradients in the ceramic coating. Experiments performed on plasma-sprayed ZrO2-Y2O3 layer showed that a significant reduction of crack initiation was achieved when the specimen was preheated at temperatures in the range 500°C-800°C. The potential of the solar processing was improved and this technique becomes competitive with conventional laser processes.
Publisher
ASME International
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
Reference20 articles.
1. Stecura, S.
, 1977, “Two-layer Thermal Barrier Coating for High Temperature Components,” Ceram. Bull., 56(12), pp. 1082–1085. 2. Bratton, R. J., and Lau, S. K., 1981, “Zirconia Thermal Barrier Coatings,” Advances in Ceramics, A. H. Heuer and L. W. Hobbs (eds.), American Ceramic Society, Colombus, OH, 3, pp. 226–240. 3. Lackey, W. J., Stinton, D. P., Cerny, G. A., and Schaffhauser, A. C., 1987, “Ceramic Coatings for Advanced Heat Engines—A Review and Projection,” Adv. Ceram. Mater., 2(1), pp. 24–30. 4. Petitbon, A., Boquet, L., and Delsart, D., 1991, “Laser Surface Sealing and Strengthening of Zirconia Coatings,” Surf. Coat. Technol., 49, pp. 57–61. 5. Mohammed, Jasim K., Rawlings, R. D., and West, D. R. F., 1992, “Pulsed Laser Sealing of Plasma-Sprayed Layers of 8wt% Yttria Stabilized Zirconia,” J. Mater. Sci., 27, pp. 3903–3910.
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|