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

Autor(es):Mostrar menos -

Caliari, F. R. ; Miranda, F. S. ; Filho, G. P. ; Essiptchouk, A. ; Reis, D. A. P. ; Azarmi, F ; Balani, K ; Eden, T ; Hussain, T ; Lau, YC ; Li, H ; Shinoda, K ; Toma, FL ; Veilleux, J

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL THERMAL SPRAY CONFERENCE AND EXPOSITION (ITSC 2018); v. N/A, p. 4-pg., 2018-01-01.

Resumo

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. (AU)

• Processo FAPESP: 12/24851-7 - Desenvolvimento de processo de deposição a plasma e estudo de fluência de materiais cerâmicos e metálicos em substrato de liga de titânio para aplicações aeroespaciais.
• Beneficiário: Felipe Rocha Caliari
• Modalidade de apoio: Bolsas no Brasil - Doutorado