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Microstructure of plasma sprayed Al2O3-3wt%TiO2 coating using freeze granulated powder

Yiming Yao (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; Ola Lyckfeldt ; Aurélien Tricoire ; Dennis Lundström ; Uta Klement (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik)
Journal of Materials Science and Chemical Engineering (2327-6045). Vol. 4 (2016), 7, p. 8-14.
[Artikel, refereegranskad vetenskaplig]

This study is aiming at controlling the microstructure of plasma sprayed Al2O3-TiO2 composite coatings using freeze granulated powders. As sprayed and sintered Al2O3+3wt%TiO2 powders were air plasma spayed with industry process parameters and compared with a commercial powder. The resulting coatings were investigated with respect to powder flowability, porosity and microstructure of the granules. The results showed that microstructure and melting fraction in the coatings could be tailored with the freeze granulation process and heat treatment conditions.

Nyckelord: Al2O3-TiO2, freeze granulation, plasma spray, microstructure



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Denna post skapades 2016-08-18.
CPL Pubid: 240403