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Thermal Cycling of Suspension Plasma Sprayed Alumina‐ YSZ Coatings Containing Amorphous Phases
Author(s) -
Tarasi Fariba,
Medraj Mamoun,
Dolatabadi Ali,
Lima Rogerio S.,
Moreau Christian
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05292.x
Subject(s) - yttria stabilized zirconia , cubic zirconia , materials science , temperature cycling , amorphous solid , composite number , suspension (topology) , composite material , chemical engineering , phase (matter) , thermal spraying , thermal , coating , ceramic , chemistry , organic chemistry , physics , mathematics , homotopy , meteorology , pure mathematics , engineering
Thermal cyclic test at 1080°C for various numbers of cycles was performed on suspension plasma‐sprayed coatings of alumina‐yttria‐stabilized zirconia composites and yttria‐stabilized zirconia ( YSZ ). The structural variations of composite coatings were studied to verify the possibility of production of nano‐composite coatings with nano‐dispersed oxides. The results showed that this composite exhibited a lower thermally grown oxide growth than that of the YSZ . New multi‐constituent composites formed of alternative regions of nano‐precipitates of alumina in zirconia matrix and nano‐precipitates of zirconia in alumina matrix were developed via phase transformation through thermal cyclic process of amorphous‐containing structure.