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Stress Relief Mechanisms in Magnesia‐ and Yttria‐Stabilized Zirconia
Author(s) -
KING ALAN G.,
YAVORSKY PAUL J.
Publication year - 1968
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.1151-2916.1968.tb11825.x
Subject(s) - materials science , cubic zirconia , indentation hardness , hardening (computing) , yttria stabilized zirconia , stress relief , stress (linguistics) , grain boundary , composite material , magnesium , deformation (meteorology) , mineralogy , metallurgy , ceramic , microstructure , geology , layer (electronics) , linguistics , philosophy
Stabilized zirconias exhibit pronounced photoelastic effects when viewed with transmitted polarized light. Thin sections reveal stress concentrations around pores and inclusions and at grain boundaries. The yield point of these materials, at some high temperature, is exceeded and plastic deformation tends to relieve these stress concentrations. The microhardness measurements of magnesia‐stabilized zirconia indicate both solution hardening and solute segregation and help to explain the physical behavior of this system as the amount of MgO is varied.