A new high temperature resistant glass�?�ceramic coating for gas turbine engine components

Bulletin of materials science

Sumana Das¹  Someswar Datta¹ 

[1] Glass-Ceramic Coating Division, Central Glass and Ceramic Research Institute, Kolkata 700 032, India$$Glass-Ceramic Coating Division, Central Glass and Ceramic Research Institute, Kolkata 700 032, IndiaGlass-Ceramic Coating Division, Central Glass and Ceramic Research Institute, Kolkata 700 032, India$$

关键词: Coatings;    glassâ€�?�ceramic;    hot corrosion;    abrasion;    vitreous enameling;    high temperature resistance.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

A new high temperature and abrasion resistant glassâ€�?�ceramic coating system (based on MgOâ€�?�Al₂O₃â€�?�TiO₂ and ZnOâ€�?�Al₂O₃â€�?�SiO₂ based glass systems) for gas turbine engine components has been developed. Thermal shock resistance, adherence at 90°-bend test and static oxidation resistance at the required working temperature (1000°C) for continuous service and abrasion resistance are evaluated using suitable standard methods. The coating materials and the resultant coatings are characterized using differential thermal analysis, differential thermogravimetric analysis, X-ray diffraction analysis, optical microscopy and scanning electron microscopy. The properties evaluated clearly showed the suitability of these coatings for protection of different hot zone components in different types of engines. XRD analysis of the coating materials and the resultant coatings showed presence of a number of microcrystalline phases. SEM micrographs indicate strong chemical bonding at the metalâ€�?�ceramic interface. Optical micrographs showed smooth glossy impervious defect free surface finish.

【 授权许可】

Unknown