The improvement in the corrosion resistance of alumina in caustic alkaline solutions obtained by dispersing ceria-doped tetragonal zirconia particles

Tsugio Sato; Sigeki Sato; Akitsugu Okuwaki

doi:10.1016/0010-938X(92)90206-I

The improvement in the corrosion resistance of alumina in caustic alkaline solutions obtained by dispersing ceria-doped tetragonal zirconia particles

Tsugio Sato, Sigeki Sato, Akitsugu Okuwaki

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

In order to improve the corrosion resistance and mechanical properties of Al₂O₃ in caustic alkaline solutions, ceria-doped tetragonal zirconia particles were dispersed at the grain boundaries of Al₂O₃. The fracture toughness and fracture strength of Al₂O₃/ceria-doped tetragonal zirconia composites greatly increased with increasing content of the ceria-doped tetragonal zirconia particles. Alumina ceramics were susceptible to attack by concentrated NaOH solutions above 150°C, whereas no noticeable corrosion was observed for ceria-doped tetragonal zirconia polycrystals (Ce-TZP) below 250°C. The degree of weight loss of Al₂O₃/Ce-TZP composites in NaOH solutions appreciably decreased with increasing Ce-TZP content up to 40 mol%.

Original language	English
Pages (from-to)	581-585
Number of pages	5
Journal	Corrosion Science
Volume	33
Issue number	4
DOIs	https://doi.org/10.1016/0010-938X(92)90206-I
Publication status	Published - 1992 Apr
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/0010-938X(92)90206-I

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title = "The improvement in the corrosion resistance of alumina in caustic alkaline solutions obtained by dispersing ceria-doped tetragonal zirconia particles",

abstract = "In order to improve the corrosion resistance and mechanical properties of Al2O3 in caustic alkaline solutions, ceria-doped tetragonal zirconia particles were dispersed at the grain boundaries of Al2O3. The fracture toughness and fracture strength of Al2O3/ceria-doped tetragonal zirconia composites greatly increased with increasing content of the ceria-doped tetragonal zirconia particles. Alumina ceramics were susceptible to attack by concentrated NaOH solutions above 150°C, whereas no noticeable corrosion was observed for ceria-doped tetragonal zirconia polycrystals (Ce-TZP) below 250°C. The degree of weight loss of Al2O3/Ce-TZP composites in NaOH solutions appreciably decreased with increasing Ce-TZP content up to 40 mol%.",

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AU - Sato, Tsugio

AU - Sato, Sigeki

AU - Okuwaki, Akitsugu

PY - 1992/4

Y1 - 1992/4

N2 - In order to improve the corrosion resistance and mechanical properties of Al2O3 in caustic alkaline solutions, ceria-doped tetragonal zirconia particles were dispersed at the grain boundaries of Al2O3. The fracture toughness and fracture strength of Al2O3/ceria-doped tetragonal zirconia composites greatly increased with increasing content of the ceria-doped tetragonal zirconia particles. Alumina ceramics were susceptible to attack by concentrated NaOH solutions above 150°C, whereas no noticeable corrosion was observed for ceria-doped tetragonal zirconia polycrystals (Ce-TZP) below 250°C. The degree of weight loss of Al2O3/Ce-TZP composites in NaOH solutions appreciably decreased with increasing Ce-TZP content up to 40 mol%.

AB - In order to improve the corrosion resistance and mechanical properties of Al2O3 in caustic alkaline solutions, ceria-doped tetragonal zirconia particles were dispersed at the grain boundaries of Al2O3. The fracture toughness and fracture strength of Al2O3/ceria-doped tetragonal zirconia composites greatly increased with increasing content of the ceria-doped tetragonal zirconia particles. Alumina ceramics were susceptible to attack by concentrated NaOH solutions above 150°C, whereas no noticeable corrosion was observed for ceria-doped tetragonal zirconia polycrystals (Ce-TZP) below 250°C. The degree of weight loss of Al2O3/Ce-TZP composites in NaOH solutions appreciably decreased with increasing Ce-TZP content up to 40 mol%.

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The improvement in the corrosion resistance of alumina in caustic alkaline solutions obtained by dispersing ceria-doped tetragonal zirconia particles

Abstract

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