A Review on Thermal Barrier Coatings | ||
| The Egyptian International Journal of Engineering Sciences and Technology | ||
| Article 5, Volume 36, Issue 1, December 2021, Pages 1-6 PDF (629.28 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/eijest.2021.79363.1070 | ||
| Authors | ||
| khaled Omran* 1; Mona Sayed Ahmed2; Mohamed Elmeniawi1; Hossam sallam3; Salma Naga2 | ||
| 1Zagazig University, Faculty of Engineering, Materials Engineering Dept, 44519 - Zagazig, Egypt | ||
| 2National Research Center, Ceramics Dept, El-Bohous Str., 12622 - Cairo, Egypt | ||
| 3Faculty of Engineering, Zagazig University, Zagazig, Egypt | ||
| Abstract | ||
| To protect the hot parts of the engine turbines, thermal barrier coatings (TBCs) are exceedingly applied. TBC decrease the temperature of the turbines during operation and hence enhanced the engine performance. Recently, researchers have concentrated on developing and processing TBCs for turbine parts. Promote the thermal barrier coatings will authorize the gas turbines to serve at elevated temperatures. TBCs mostly consists of 2 layers, the bond coat, and the topcoat. The top-coat is mainly composed of ceramic materials that possess low thermal conductivity properties and its main job is to protect the metallic parts from high temperatures. Apparent attempts are being carried out to figure new materials having beneficial fulfillments. To defeat the yttria partially stabilized zirconia (YSZ) troubles, pyrochlore rare-earth zirconate ceramics (A2B2O7) have been suggested as most of them are refractory and thermally stable. Hexaaluminates are another suggestion that meets the current requirements of TBCs. The present review summarizes and reviews the novel advance of the materials suitable for Thermal Barrier Coatings, their selection criteria, and their processing techniques. | ||
| Keywords | ||
| 1st coating; 2nd TBC materials; 3rd Processing techniques | ||
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