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Effect of chemical and heat treatment on the tetragonal-to-monoclinic transformation of zirconia
- Source :
- Journal of Materials Research. 8:163-168
- Publication Year :
- 1993
- Publisher :
- Springer Science and Business Media LLC, 1993.
-
Abstract
- A rapid in situ diffraction technique, synchrotron radiation–energy dispersive diffraction, has been used to obtain direct information on the kinetics of the tetragonal-to-monoclinic transformation temperatures for zirconia synthesized by heating the hydroxide up to temperatures between 900 and 1300 °C. In all cases the monoclinic phase appears only during the cooling stage. The effects of chemical (hydroxide preparation–pH) and heat treatments (top dwell temperature and dwell time) have been investigated. The transformation temperature increases with both top temperature and dwell time. For the lesser heat treatments (generally temperatures 1000) the low-pH material displays the higher transformation temperatures. These data do now give reliable indications on how to design a required metastability into the final room temperature product.
- Subjects :
- Diffraction
Materials science
Mechanical Engineering
Analytical chemistry
Mineralogy
Condensed Matter Physics
Tetragonal crystal system
Dwell time
chemistry.chemical_compound
chemistry
Mechanics of Materials
Phase (matter)
Metastability
Hydroxide
General Materials Science
Cubic zirconia
Monoclinic crystal system
Subjects
Details
- ISSN :
- 08842914
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Research
- Accession number :
- edsair.doi...........469ac92781ef21cf485bbd12b9bdd4d6