Influences of evaluation methods and testing load on microhardness and Young's modulus of ZTA and ATZ ceramics
Articolo
Data di Pubblicazione:
2013
Abstract:
In thiswork,microindentationtestsunderdifferentconditionswereperformedtodeterminetheinfluenceofindentationloadon
Young's modulusandmicrohardnessofZrO2 reinforced withAl2O3 particles (ATZ)andAl2O3 reinforced withZrO2 particles (ZTA).
Microhardness ofATZandZTAmaterialswasmeasuredusingtraditionalVickersandinstrumentedmicrohardnessmethodsat500,
1000, 1500and2000mNloads.Asfortheinstrumentedmethod,Vickersmicrohardnesswascalculatedfromtheforce-indentationdepth
curves byanalyzingtheunloadingsegments,accordingtotheOliver-Pharrmethod.Inthiswaythepossibledifferencesbetweenthetwo
methods werecalculated.Furthermore,Young'smodulusateachloadwascalculatedusingtheinstrumentalmethod.
The maindifferencesbetweenthetwomethodswereanalyzed,andtheinfluenceoftheloadonthedefinitionofYoung'smodulusin
the caseoftheinstrumentalmethodwasstudied.Theresultsindicatedanindentationloadeffectforbothmaterials,ashardnessand
Young's modulusincreasebydecreasingtheindentationload
Tipologia CRIS:
01.01 Articolo in rivista
Keywords:
Ceramic composites;Microhardness;Young'smodulus;Martenshardness
Elenco autori:
GAUTIER DI CONFIENGO, GIOVANNA MARIA; Tebaldo, Vincenzo
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