Characteristics and comparison of metastability of alkoxy-derived tetragonal ZrO2 powders, gels and films

Huey Chang Wang, Kwang-Lung Lin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The metastability of t-ZrO2 in the form of ZrO2 powders, gels and films prepared by hydrolysis of zirconium n-butoxides using different techniques, including the sol-gel process, was investigated. The morphologies of the powders, gels and films were observed by the scanning electron microscopy. Differential thermal analysis and differential thermal gravimetric curves were used to determine the crystallization temperatures and thermal behavior of the materials. The experimental results indicated that the metastability of t-ZrO2, investigated in terms of relative content and crystalline size by X-ray diffraction, could not be explained simply by the effect of crystallite size, the existence of impurities or unpaired electrons. In this work it is proposed that the strain energy existing among the crystallites is an important factor in determining the metastability of t-ZrO2.

Original languageEnglish
Pages (from-to)171-178
Number of pages8
JournalMaterials Science and Engineering A
Volume136
Issue numberC
DOIs
Publication statusPublished - 1991 Apr 30

Fingerprint

metastable state
Powders
Gels
gels
Crystallite size
Crystallization
Strain energy
Crystallites
Zirconium
Differential thermal analysis
Sol-gel process
Hydrolysis
Impurities
sol-gel processes
Crystalline materials
X ray diffraction
Scanning electron microscopy
crystallites
hydrolysis
Electrons

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Characteristics and comparison of metastability of alkoxy-derived tetragonal ZrO2 powders, gels and films",
abstract = "The metastability of t-ZrO2 in the form of ZrO2 powders, gels and films prepared by hydrolysis of zirconium n-butoxides using different techniques, including the sol-gel process, was investigated. The morphologies of the powders, gels and films were observed by the scanning electron microscopy. Differential thermal analysis and differential thermal gravimetric curves were used to determine the crystallization temperatures and thermal behavior of the materials. The experimental results indicated that the metastability of t-ZrO2, investigated in terms of relative content and crystalline size by X-ray diffraction, could not be explained simply by the effect of crystallite size, the existence of impurities or unpaired electrons. In this work it is proposed that the strain energy existing among the crystallites is an important factor in determining the metastability of t-ZrO2.",
author = "Wang, {Huey Chang} and Kwang-Lung Lin",
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Characteristics and comparison of metastability of alkoxy-derived tetragonal ZrO2 powders, gels and films. / Wang, Huey Chang; Lin, Kwang-Lung.

In: Materials Science and Engineering A, Vol. 136, No. C, 30.04.1991, p. 171-178.

Research output: Contribution to journalArticle

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