Spray drying of nanometric SYSZ powders to obtain plasma sprayable nanostructured granules

Mohammad Reza Loghman-Estarki; Hossein Edris; R. Shoja Razavi; Hossein Jamali; Reza Ghasemi; Mousa Pourbafrany; Mohammad Erfanmanesh; Mazaher Ramezani

doi:10.1016/j.ceramint.2013.05.062

Spray drying of nanometric SYSZ powders to obtain plasma sprayable nanostructured granules

Mohammad Reza Loghman-Estarki, Hossein Edris, R. Shoja Razavi, Hossein Jamali, Reza Ghasemi, Mousa Pourbafrany, Mohammad Erfanmanesh, Mazaher Ramezani

Research output: Journal Publication › Article › peer-review

53 Citations (Scopus)

Abstract

This study addresses the correlation between the feedstock agglomerates with their resulting coating microstructure and thermal insulation capability. To this end, the Y₂O₃ and Sc₂O₃ codoped in ZrO₂ (SYSZ) nanopowders were synthesized by the polymeric sol-gel method, their suspensions were agglomerated into plasma sprayable feedstock by the spray drying method, and finally, the effect of feedstock morphology on the microstructures and thermal insulation capability of APS coatings was investigated. The coating microstructure consisted of semi-molten feedstock agglomerates surrounded by fully molten particles that acted as binders. Solid irregular SYSZ granules yielded coatings with lower porosity and thermal insulation capability than the porous spherical YSZ ones.

Original language	English
Pages (from-to)	9447-9457
Number of pages	11
Journal	Ceramics International
Volume	39
Issue number	8
DOIs	https://doi.org/10.1016/j.ceramint.2013.05.062
Publication status	Published - Dec 2013
Externally published	Yes

Keywords

Agglomerate
APS
Granules
Nanostructure
Plasma sprayable feedstocks
Spray drying

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2013.05.062

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title = "Spray drying of nanometric SYSZ powders to obtain plasma sprayable nanostructured granules",

abstract = "This study addresses the correlation between the feedstock agglomerates with their resulting coating microstructure and thermal insulation capability. To this end, the Y2O3 and Sc2O3 codoped in ZrO2 (SYSZ) nanopowders were synthesized by the polymeric sol-gel method, their suspensions were agglomerated into plasma sprayable feedstock by the spray drying method, and finally, the effect of feedstock morphology on the microstructures and thermal insulation capability of APS coatings was investigated. The coating microstructure consisted of semi-molten feedstock agglomerates surrounded by fully molten particles that acted as binders. Solid irregular SYSZ granules yielded coatings with lower porosity and thermal insulation capability than the porous spherical YSZ ones.",

keywords = "Agglomerate, APS, Granules, Nanostructure, Plasma sprayable feedstocks, Spray drying",

author = "Loghman-Estarki, \{Mohammad Reza\} and Hossein Edris and Razavi, \{R. Shoja\} and Hossein Jamali and Reza Ghasemi and Mousa Pourbafrany and Mohammad Erfanmanesh and Mazaher Ramezani",

year = "2013",

month = dec,

doi = "10.1016/j.ceramint.2013.05.062",

language = "English",

volume = "39",

pages = "9447--9457",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

number = "8",

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TY - JOUR

T1 - Spray drying of nanometric SYSZ powders to obtain plasma sprayable nanostructured granules

AU - Loghman-Estarki, Mohammad Reza

AU - Edris, Hossein

AU - Razavi, R. Shoja

AU - Jamali, Hossein

AU - Ghasemi, Reza

AU - Pourbafrany, Mousa

AU - Erfanmanesh, Mohammad

AU - Ramezani, Mazaher

PY - 2013/12

Y1 - 2013/12

N2 - This study addresses the correlation between the feedstock agglomerates with their resulting coating microstructure and thermal insulation capability. To this end, the Y2O3 and Sc2O3 codoped in ZrO2 (SYSZ) nanopowders were synthesized by the polymeric sol-gel method, their suspensions were agglomerated into plasma sprayable feedstock by the spray drying method, and finally, the effect of feedstock morphology on the microstructures and thermal insulation capability of APS coatings was investigated. The coating microstructure consisted of semi-molten feedstock agglomerates surrounded by fully molten particles that acted as binders. Solid irregular SYSZ granules yielded coatings with lower porosity and thermal insulation capability than the porous spherical YSZ ones.

AB - This study addresses the correlation between the feedstock agglomerates with their resulting coating microstructure and thermal insulation capability. To this end, the Y2O3 and Sc2O3 codoped in ZrO2 (SYSZ) nanopowders were synthesized by the polymeric sol-gel method, their suspensions were agglomerated into plasma sprayable feedstock by the spray drying method, and finally, the effect of feedstock morphology on the microstructures and thermal insulation capability of APS coatings was investigated. The coating microstructure consisted of semi-molten feedstock agglomerates surrounded by fully molten particles that acted as binders. Solid irregular SYSZ granules yielded coatings with lower porosity and thermal insulation capability than the porous spherical YSZ ones.

KW - Agglomerate

KW - APS

KW - Granules

KW - Nanostructure

KW - Plasma sprayable feedstocks

KW - Spray drying

UR - https://www.scopus.com/pages/publications/84883760916

U2 - 10.1016/j.ceramint.2013.05.062

DO - 10.1016/j.ceramint.2013.05.062

M3 - Article

AN - SCOPUS:84883760916

SN - 0272-8842

VL - 39

SP - 9447

EP - 9457

JO - Ceramics International

JF - Ceramics International

IS - 8

ER -

Spray drying of nanometric SYSZ powders to obtain plasma sprayable nanostructured granules

Abstract

Keywords

ASJC Scopus subject areas

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