About this Research Topic
High-temperature surface protection is a key technology in the pursuit of engine efficiency and safety. In the aviation and aerospace field, superalloys, ceramic matrix composites (CMCs), and polymer matrix composites are the most frequently used components, all of which rely on ceramic coatings to protect them from harsh environments. Thermal barrier coatings (TBCs) are designed to provide thermal insulation to the superalloy parts or polymer matrix composites, while environmental barrier coatings (EBCs) are developed to protect CMCs from water vapor. In more aggressive designs an additional TBC top coat will be deposited on CMCs to build thermal/environmental barrier coatings (T/EBC). A durable T/EBC system should perform to enable higher-temperature operating conditions, protect against erosion and corrosion, and reduce mechanical loading.
The increasingly improved temperature comes with new coating challenges - higher stresses, increased materials phase instability, thermal oxidation and degradation from various forms of hot corrosion (especially calcium—aluminum—magnesium silicates (CMAS)). All of these factors can lead to premature failure of ceramic coating systems. Novel ceramic coating chemistries, creative ceramic coating designs, and robust processes are required to extend coating durability and reliability. The aim of this Research Topic is to present significant developments in both thermal barrier coatings (TBCs) and environmental barrier coatings (EBCs). As CMCs with excellent high-temperature capability and low density are replacing Ni-based superalloys for further gas turbines, reports on the CMCs with the novel or substantially improved performance are also suitable in this Research Topic.
High-quality Original Research and Review articles in this field are all welcomed for submission to this Research Topic. Research interests include but are not limited to the following areas:
- New thermal barrier coatings (TBCs) materials that can be operated above 1200ºC; New TBCs (both metallic bond coat and ceramic top coat) processing technology; TBCs testing and evaluation; Failure mechanism of TBCs under molten salts corrosion (especially CMAS) and its mitigation
- Environmental barrier coatings (EBCs) materials, the development of the EBCs processing technology, as well as the performance of EBCs under classical engine operation conditions
- Ultra-high temperature ceramics and coatings; The coating processing technology; Coating performance testing and evaluation
- Thermal protection coatings for polymer matrix composites, aluminum alloys and magnesium alloys
The increasingly improved temperature comes with new coating challenges - higher stresses, increased materials phase instability, thermal oxidation and degradation from various forms of hot corrosion (especially calcium—aluminum—magnesium silicates (CMAS)). All of these factors can lead to premature failure of ceramic coating systems. Novel ceramic coating chemistries, creative ceramic coating designs, and robust processes are required to extend coating durability and reliability. The aim of this Research Topic is to present significant developments in both thermal barrier coatings (TBCs) and environmental barrier coatings (EBCs). As CMCs with excellent high-temperature capability and low density are replacing Ni-based superalloys for further gas turbines, reports on the CMCs with the novel or substantially improved performance are also suitable in this Research Topic.
High-quality Original Research and Review articles in this field are all welcomed for submission to this Research Topic. Research interests include but are not limited to the following areas:
- New thermal barrier coatings (TBCs) materials that can be operated above 1200ºC; New TBCs (both metallic bond coat and ceramic top coat) processing technology; TBCs testing and evaluation; Failure mechanism of TBCs under molten salts corrosion (especially CMAS) and its mitigation
- Environmental barrier coatings (EBCs) materials, the development of the EBCs processing technology, as well as the performance of EBCs under classical engine operation conditions
- Ultra-high temperature ceramics and coatings; The coating processing technology; Coating performance testing and evaluation
- Thermal protection coatings for polymer matrix composites, aluminum alloys and magnesium alloys
Keywords: thermal barrier coating, environmental barrier coating, preparation technology, hot corrosion, CMAS attack
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.
