Nanostructured zirconia coating has been fabricated by atmospheric plasma spraying. The microstructure of the coating has been characterized with SEM and XRD and the microhardness has been measured. The results show ZnO_(2) coating possessed two kinds...
Nanostructured zirconia coating has been fabricated by atmospheric plasma spraying. The microstructure of the coating has been characterized with SEM and XRD and the microhardness has been measured. The results show ZnO_(2) coating possessed two kinds of structure. One was the poorly consolidatedly structure. which was composed of nanosized particles. The other was an over lapping structure. which consisted of micrometer size particles. The former was the main structure in the coating. The airconia coating had the same phase composition as the starting powder and the thickness of coating ,was quite heterogencous. The as-sprayed nano zirconia coating had a similar microhardness to sintered ZnO_(2) which was much higher than the conventional couterpart.