Investigation of Plasma-Sprayed Dysprosia Coatings |
| |
Authors: | Koththavasal R. Venkatachari Waltraud M. Kriven |
| |
Affiliation: | Department of Materials Science and Engineering, University of Illinois at UrbanA&Mdash;Champaign, Urbana, Illinois 61801 |
| |
Abstract: | 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. |
| |
Keywords: | plasma spraying dysprosia coatings phase transformations annealing |
|
|