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Phase analysis of plasma-sprayed zirconia-yttria coatings

Journal Article · · Ceram. Eng. Sci. Proc.; (United States)
Phase analysis of plasma-sprayed 8 wt pct-yttria-stabilized zirconia (YSZ) thermal barrier coatings and powders was carried out by X-ray diffraction. Step scanning was used for increased peak resolution. Plasma spraying of the YSZ powder into water or onto a steel substrate to form a coating reduced the cubic and monoclinic phases with a simultaneous increase in the tetragonal phase. Heat treatment of the coating at 1150 C for 10 h in an Ar atmosphere increased the amount of cubic and monoclinic phases. The implications of these transformations on coating performance and integrity are discussed.
Research Organization:
New York State Univ., Stony Brook
OSTI ID:
6231539
Journal Information:
Ceram. Eng. Sci. Proc.; (United States), Journal Name: Ceram. Eng. Sci. Proc.; (United States) Vol. 4; ISSN CESPD
Country of Publication:
United States
Language:
English