Mullite and Mullite/ZrO2-7wt.%Y2O3 Powders for Thermal Spraying of Environmental Barrier Coatings

Abstract

Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Mullite and mullite/ZrO₂-7wt%Y₂O₃ powders for thermal spraying of environmental barrier coatings Garcia, E.; Mesquita-Guimaraes, J.; Miranzo, P.; Osendi, M. I.; Wang, Y.; Lima, R. S.; Moreau, C.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=18398983&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=18398983&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1007/s11666-009-9420-4Journal of Thermal Spray Technology, 19, 1-2, pp. 286-293, 2010-01-01 Mullite and Mullite/ZrO 2 -7wt. Mullite and mullite/ZrO 2 -7wt.%Y 2 O 3 coatings could be thought among the main protective layers for environment barrier coatings (EBCs) to protect Si-based substrates in future gas turbine engines. Considering that feedstock of the compound powder is not commercially available, two powder processing routes Spray Drying (SD) and Flame Spheroidization (FS) were implemented for both types of powders. For each method the particle size, the morphology, and microstructure of the powder particles was determined. In addition, the effect of the heat treatment on the powder crystallinity and microstructure of FS powders was also investigated. To evaluate their suitability as feedstock materials, the powders were plasma sprayed and their in-flight particle characteristics monitored for coatings production. The powder morphology was correlated to the in-flight particle characteristics and splat morphology to gain insight about into the influence of powder characteri...

Highly Electrically Conducting Glass-Graphene Nanoplatelets Hybrid Coatings

“…Similarly, the YAS-GNP powders were FS into a metal container filled with liquid N 2 for attaining flame spheroidized beads. 39 These beads helped to understand changes occurring in the YAS-GNP granules throughout the spraying process.…”

Phase Composition and Microstructural Responses of Graded Mullite/YSZ Coatings Under Water Vapor Environments

“…Suspensions with 30 wt.% of solid contents of mullite and mullite/Y-ZrO 2 mixtures were prepared and spray dried (SD), in the same way as described in a previous work (Ref 11), to get the feedstock powders with a particle size of À60/+5 lm. Alternatively, a batch of mullite was prepared following a CSIC proprietary freeze-granulation (FG) method from the same starting powders; the particle size of the FG feedstock was À150/+32 lm.…”

Optimizing Adhesion Strength of Environment Barrier Coating Using Slurry Spray Technique

“…The literature survey has revealed that there are number of environment barrier coating techniques such as HVOF, APS and EV-PVD Techniques (5,6). But an advancement of wet powder spray, Slurry Spray Technique (SST) has been emerged as a low cost, simple and effective technique (5).The Slurry Spray Technique (SST) utilizes traditional wet powder spraying methods to deposit coating materials onto a target substrate to produce a functional coating.…”