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Method of Fabricating Ceria‐Stabilized Tetragonal Zirconia Polycrystals
Author(s) -
Bhaduri Sarit B.,
Chakraborty Amitavo,
Rao R. Mohan
Publication year - 1988
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.1151-2916.1988.tb06424.x
Subject(s) - materials science , sintering , fabrication , ball mill , cubic zirconia , tetragonal crystal system , fracture toughness , ceramic , composite material , pressing , particle size , toughness , toughening , chemical engineering , crystallography , crystal structure , medicine , chemistry , alternative medicine , pathology , engineering
Most zirconia‐based toughened ceramics need specialized processes to achieve their desired properties. In this paper, we report the fabrication of toughened ceria‐stabilized tetragonal zirconia polycrystal by conventional processing, i.e., ball milling and cold‐pressing followed by sintering. We believe that ball milling works here because a somewhat coarser particle size is actually beneficial in this case. Although the samples were not fully dense (they need not be), a composition of ZrO 2 ‐12 mol% CeO 2 yielded a fracture toughness value of 14.1 MPa·m 1/2 . This is comparable to values reported for materials processed by specialized techniques and can be rationalized in terms of R‐curve behavior.