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STUDY OF THE FERROELASTIC TRANSFORMATION IN ZIRCONIA BY NEUTRON-DIFFRACTION
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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 0141-8637.
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Abstract
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 | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery Q Science > QC Physics |
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Journal or Publication Title: | PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | ||||
Publisher: | TAYLOR & FRANCIS LTD | ||||
ISSN: | 0141-8637 | ||||
Official Date: | March 1994 | ||||
Dates: |
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Volume: | 69 | ||||
Number: | 3 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 499-507 | ||||
Publication Status: | Published |
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