简介：Yttria-stabilizecl-zirconia（YSZ）hollowspheresarewidelyutilizedfortheirnovelphysicalandchemicalproperties.However,developingasimpleandlow-costmethodforpreparingsuchhollowspheresstillremainsagreatchallenge.Inthispaper,anatmosphericplasmaspray（APS）methodisintroduced,andtheformationmechanismofhollow7YSZ（ZrO2-7wt%Y2O3）spheresispresented.Thehollowspheremorphologywasobservedbyscanningelectronmicroscopy（SEM）whenagglomeratedandsintered7YSZpowderswereused.Additionally,additivecompositionchanges,phasetransformations,andthethermalbehaviorof7YSZpowderswereanalyzedbyenergydispersivespectroscopy（EDS）,X-raydiffractometry（XRD）,thermogravimetricanalysis（TG）anddifferentialscanningcalorimeteranalysis（DSC）.Furthermore,thephasetransformationsofagglomeratedandsintered7YSZpowders,7YSZhollowspheresthatannealedatvarioustemperaturesfordifferenttimesareanalyzed.