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Investigation of Plasma‐Sprayed Dysprosia Coatings
Author(s) -
Venkatachari Koththavasal R.,
Kriven Waltraud M.
Publication year - 1989
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.1151-2916.1989.tb06026.x
Subject(s) - monoclinic crystal system , materials science , thermal barrier coating , cubic zirconia , yttria stabilized zirconia , annealing (glass) , phase (matter) , plasma , metastability , thermal spraying , grinding , metallurgy , mineralogy , composite material , chemical engineering , crystallography , coating , crystal structure , chemistry , ceramic , physics , organic chemistry , quantum mechanics , engineering
Plasma‐sprayed coatings of dysprosia were made and characterized. The coatings consisted mostly of the metastable, monoclinic phase and minor amounts of the cubic phase. Grinding did not transform the high‐temperature monoclinic phase, but, on annealing in air at 800° for 5 h, 50% reversion to the cubic phase occurred. Commercial yttria‐stabilized zirconia thermal barrier coatings out‐performed unannealed plasma‐sprayed dysprosia coatings in terms of wear resistance.