In-Flight Analysis and Microstructural Evaluation of CoNiCrAlY Coatings Deposited by HVPS

• Autor(a) principal: Caliari, F. R.
• Data de Publicação: 2018
• Outros Autores: Miranda, F. S., Filho, G. P., Essiptchouk, A. [UNESP], Reis, D. A. P., Azarmi, F., Balani, K., Eden, T., Hussain, T., Lau, Y. C., Li, H., Shinoda, K., Toma, F. L., Veilleux, J.
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/195529

The plasma torch design affects the particle-plasma interaction, in-flight properties and the coating microstructure. When spraying metallic powders, the in-flight oxidation as well as the particle velocity and temperature determine the mechanical, corrosion and oxidation properties, which have a major impact on the in-service degradation of bond coats. This study aims to determine the microstructural and mechanical properties of as-sprayed CoNiCrAlY coatings deposited on the Inconel 718 alloy. Depositions were made using a High Velocity Plasma Spray Process (HVPS), which is based on a special plasma torch design. In-flight particle characteristics were determined to elucidate the kinetic and thermal regime of HVPS process.