STUDY OF THE FERROELASTIC TRANSFORMATION IN ZIRCONIA BY NEUTRON-DIFFRACTION
UNSPECIFIED. (1994) STUDY OF THE FERROELASTIC TRANSFORMATION IN ZIRCONIA BY NEUTRON-DIFFRACTION. PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 69 (3). pp. 499-507. ISSN 0141-8637Full text not available from this repository.
Neutron diffraction studies of tetragonal zirconia polycrystals subjected to various applied uniaxial stresses indicate that a ferroelastic crystalline transformation occurs within the bulk of the material. The critical coercive stress is determined to be 1.65+/-0.03 GPa. The results agree well with previous reports concerning the ferroelasticity of tetragonal zirconia, but they are the first direct evidence indicating that the anomalies observed using the first X-ray diffraction studies originate from the bulk of the ceramic and not solely from the surface. The preferred orientation observed in the tetragonal crystallites was measured as a function of applied uniaxial stress and interpreted via a resolved stress criterion. It is believed that the ferroelastic transformation can act as an energy-absorbing mechanism and hence toughen zirconia or ceramics containing dispersed zirconia.
|Item Type:||Journal Article|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Q Science > QC Physics
|Journal or Publication Title:||PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES|
|Publisher:||TAYLOR & FRANCIS LTD|
|Number of Pages:||9|
|Page Range:||pp. 499-507|
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