Phase Transformation Introduced by Mechanical and Chemical Surface Preparations of Tetragonal Zirconia Polycrystals |
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| Authors: | Nibedita Mitra Kalyani Vijayan B N Pramila Bai S K Biswas |
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| Affiliation: | Department of Mechanical Engineering, Indian Institute of Science, Bangalore, India;Materials Science Division, National Aeronautical Laboratory, Bangalore, India |
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| Abstract: | Cutting of Y2O3-doped TZP rods by a low-speed diamond saw introduces an unidentified, metastable phase X (x -ZrO2) coexisting with the tetragonal ( t -ZrO2) and the monoclinic ( m -ZrO2) phases initially present in the sample. Further mechanical deformation of the cut surface by indentation or polishing sustains the x -ZrO2. Chemical etching removes the x -ZrO2 and increases the m -ZrO2content. |
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