Traditional　and　modified　Y2O3　stabilised　zirconia　(YSZ)　thermal　barrier　coatings　(TBCs)　on　nicked　based　superalloy　DZ125　were　produced　by　atmospheric　plasma　spray.　In　addition　to　the　thermal　properties,　the　mechanical　properties　of　ceramics　are　also　very　important　for　superior　TBCs.　The　mechanical　properties　of　the　sprayed　coatings　at　room　temperature,　including　microhardness,　Young＇s　modulus,　fracture　toughness　and　tensile　strength,　were　evaluated.　The　Young＇s　modulus　and　microhardness　of　the　segmented　coating　were　measured　to　be　about　72　and　8　GPa,　relatively　higher　than　those　of　the　non-segmented　coating　respectively.　The　fracture　toughness　was　determined　by　an　indentation　technique.　The　values　of　1.7-2.0　MPa　m(1/2)　for　the　traditional　YSZ　coatings　are　relatively　lower　than　the　values　for　the　modified　YSZ　coatings　2.0-2.3　MPa　m(1/2).　The　lower　porosity　and　better　lamellar　bonding　of　the　segmented　coating　could　be　responsible　for　the　improvement　of　the　mechanical　properties.