PHASE RELATIONSHIPS IN SOME ZrO//2 SYSTEMS.

V. S. Stubican, G. S. Corman, J. R. Hellmann, G. Senft

Research output: Chapter in Book/Report/Conference proceedingConference contribution

44 Citations (Scopus)

Abstract

The phase relationships in the system //2-CaO were with those in the system HfO//2-CaO. Two ordered phases, CaZr//4O//9 and Ca//6Zr//1//9O //4//4, were found in the system ZrO//2-CaO. CaZr//4O//9 seems to be metastable, and the Ca//6Zr//1//9O//4//4 phase, which is an equilibrium phase, disorders at 1355 degree plus or minus 15 degree C. In the system HfO//2-CaO, three ordered phases were found. The CaHf//4O//9 phase is metastable and decomposes into Ca//2Hf//7O//1//6 and a hafnia solid solution. Ca//2Hf//7O//1//6 and Ca//6Hf//1//9O//4//4 are equilibrium phases in the system HfO//2-CaO. It was confirmed that Zr//3Y//4O//1//2, which appears in the system ZrO//2-Y//2O//3, disorders at 1382 degree plus or minus 5 degree C into a fluorite-type solid solution. This result was used to refine the existing ZrO//2-Y//2O//3 phase diagram. 14 refs.

Original languageEnglish (US)
Title of host publicationAdvances in Ceramics
EditorsNils Claussen, Manfred Ruehle, Arthur Harold Heuer
PublisherAmerican Ceramic Soc Inc
Pages96-106
Number of pages11
ISBN (Print)0916094642
StatePublished - Dec 1 1984

Publication series

NameAdvances in Ceramics
Volume12
ISSN (Print)0730-9546

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Phase equilibria
Solid solutions
Metastable phases
Fluorspar
Phase diagrams

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Stubican, V. S., Corman, G. S., Hellmann, J. R., & Senft, G. (1984). PHASE RELATIONSHIPS IN SOME ZrO//2 SYSTEMS. In N. Claussen, M. Ruehle, & A. H. Heuer (Eds.), Advances in Ceramics (pp. 96-106). (Advances in Ceramics; Vol. 12). American Ceramic Soc Inc.
Stubican, V. S. ; Corman, G. S. ; Hellmann, J. R. ; Senft, G. / PHASE RELATIONSHIPS IN SOME ZrO//2 SYSTEMS. Advances in Ceramics. editor / Nils Claussen ; Manfred Ruehle ; Arthur Harold Heuer. American Ceramic Soc Inc, 1984. pp. 96-106 (Advances in Ceramics).
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Stubican, VS, Corman, GS, Hellmann, JR & Senft, G 1984, PHASE RELATIONSHIPS IN SOME ZrO//2 SYSTEMS. in N Claussen, M Ruehle & AH Heuer (eds), Advances in Ceramics. Advances in Ceramics, vol. 12, American Ceramic Soc Inc, pp. 96-106.

PHASE RELATIONSHIPS IN SOME ZrO//2 SYSTEMS. / Stubican, V. S.; Corman, G. S.; Hellmann, J. R.; Senft, G.

Advances in Ceramics. ed. / Nils Claussen; Manfred Ruehle; Arthur Harold Heuer. American Ceramic Soc Inc, 1984. p. 96-106 (Advances in Ceramics; Vol. 12).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - The phase relationships in the system //2-CaO were with those in the system HfO//2-CaO. Two ordered phases, CaZr//4O//9 and Ca//6Zr//1//9O //4//4, were found in the system ZrO//2-CaO. CaZr//4O//9 seems to be metastable, and the Ca//6Zr//1//9O//4//4 phase, which is an equilibrium phase, disorders at 1355 degree plus or minus 15 degree C. In the system HfO//2-CaO, three ordered phases were found. The CaHf//4O//9 phase is metastable and decomposes into Ca//2Hf//7O//1//6 and a hafnia solid solution. Ca//2Hf//7O//1//6 and Ca//6Hf//1//9O//4//4 are equilibrium phases in the system HfO//2-CaO. It was confirmed that Zr//3Y//4O//1//2, which appears in the system ZrO//2-Y//2O//3, disorders at 1382 degree plus or minus 5 degree C into a fluorite-type solid solution. This result was used to refine the existing ZrO//2-Y//2O//3 phase diagram. 14 refs.

AB - The phase relationships in the system //2-CaO were with those in the system HfO//2-CaO. Two ordered phases, CaZr//4O//9 and Ca//6Zr//1//9O //4//4, were found in the system ZrO//2-CaO. CaZr//4O//9 seems to be metastable, and the Ca//6Zr//1//9O//4//4 phase, which is an equilibrium phase, disorders at 1355 degree plus or minus 15 degree C. In the system HfO//2-CaO, three ordered phases were found. The CaHf//4O//9 phase is metastable and decomposes into Ca//2Hf//7O//1//6 and a hafnia solid solution. Ca//2Hf//7O//1//6 and Ca//6Hf//1//9O//4//4 are equilibrium phases in the system HfO//2-CaO. It was confirmed that Zr//3Y//4O//1//2, which appears in the system ZrO//2-Y//2O//3, disorders at 1382 degree plus or minus 5 degree C into a fluorite-type solid solution. This result was used to refine the existing ZrO//2-Y//2O//3 phase diagram. 14 refs.

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Stubican VS, Corman GS, Hellmann JR, Senft G. PHASE RELATIONSHIPS IN SOME ZrO//2 SYSTEMS. In Claussen N, Ruehle M, Heuer AH, editors, Advances in Ceramics. American Ceramic Soc Inc. 1984. p. 96-106. (Advances in Ceramics).