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Instrumented Micro‐indentation of Zirconia Ceramics
Author(s) -
Alcalá Jorge
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01500.x
Subject(s) - indentation , materials science , ceramic , cubic zirconia , composite material , vickers hardness test , modulus , penetration depth , penetration (warfare) , hardening (computing) , finite element method , structural engineering , optics , mathematics , microstructure , engineering , layer (electronics) , operations research , physics
Instrumented micro‐indentation experiments are conducted with Vickers and spherical indenters in Y‐TZP and two different Mg‐PSZ ceramics. The load ( P )–depth of penetration ( h ) curves from Vickers indentation can be fitted to P = Ch n with n ∼ 1.8. It is shown that within the micro‐indentation range, measurements of Young's modulus ( E ) can be conducted in zirconia ceramics using sharp indenters, and that the results are consistent with those from spherical indentation. Quantification of piling‐up and sinking‐in is accomplished from P – h curves. Results from finite element computations are used to assess pressure‐sensitivity and plastic‐hardening coefficient from indentation experiments.