Thermal spray alumina coatings: benefits of segmented torches for the future of plasma spraying industry?
Résumé
Industries favor plasma spraying because of its combined efficiency and flexibility. Segmented plasma torches offer distinct advantages: reduce the continuous back-and-forth movement of the arc and improve the homogeneity of powder treatment. These features make them a compelling alternative to conventional turbulent torches like the F4 and 9MB.
Motivated by this potential, this paper reports a study on the microstructure of alumina coatings deposited using a segmented plasma torch. The characterization focuses on porosity, hardness, deposition efficiency and thickness. Initial results show that the segmented torch may reduce energy consumption and gas flow rate while maintaining or even improving the microstructure compared to traditional torches.
Domaines
Physique [physics]| Origine | Fichiers produits par l'(les) auteur(s) |
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