Solid-state phase relationships in the calcia-titania-zirconia system at 1200°C

Douglas Swenson; Tai-Gang Nieh; John H. Fournelle

doi:10.1111/j.1151-2916.1998.tb02763.x

Solid-state phase relationships in the calcia-titania-zirconia system at 1200°C

Douglas Swenson
, Tai-Gang Nieh
, John H. Fournelle

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

15 Citations (Scopus)

Abstract

Phase relationships were investigated in the CaO-TiO₂-ZrO₂ system at 1200°C for compositions containing <50 mol% CaO using X-ray diffraction and electron probe microanalysis. The existence of two previously reported ternary phases, zirconolite (CaZrTi₂O₇) and calzirtite (Ca₂Zr₅Ti₂O₁₆), was confirmed. Each of these phases exhibited a significant range of homogeneity between TiO₂ and ZrO₂, while maintaining a nearly constant concentration of CaO. The ternary solubilities of the constituent binary phases were found to be small (typically <1 mol%), with the exceptions of the perovskites (CaTiO₃ and CaZrO₃). These latter phases displayed mutual solubilities of at least 22 mol% but exhibited significant variations in composition from grain to grain. Thermodynamic equilibrium was clearly not established in several samples, although most of the phase relationship information obtained was self-consistent.

Original language	English
Pages (from-to)	3249-3252
Journal	Journal of the American Ceramic Society
Volume	81
Issue number	12
DOIs	https://doi.org/10.1111/j.1151-2916.1998.tb02763.x
Publication status	Published - Dec 1998
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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@article{a3648938a6eb47ad94563ad746f13270,

title = "Solid-state phase relationships in the calcia-titania-zirconia system at 1200°C",

abstract = "Phase relationships were investigated in the CaO-TiO2-ZrO2 system at 1200°C for compositions containing <50 mol\% CaO using X-ray diffraction and electron probe microanalysis. The existence of two previously reported ternary phases, zirconolite (CaZrTi2O7) and calzirtite (Ca2Zr5Ti2O16), was confirmed. Each of these phases exhibited a significant range of homogeneity between TiO2 and ZrO2, while maintaining a nearly constant concentration of CaO. The ternary solubilities of the constituent binary phases were found to be small (typically <1 mol\%), with the exceptions of the perovskites (CaTiO3 and CaZrO3). These latter phases displayed mutual solubilities of at least 22 mol\% but exhibited significant variations in composition from grain to grain. Thermodynamic equilibrium was clearly not established in several samples, although most of the phase relationship information obtained was self-consistent.",

author = "Douglas Swenson and Tai-Gang Nieh and Fournelle, \{John H.\}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "1998",

month = dec,

doi = "10.1111/j.1151-2916.1998.tb02763.x",

language = "English",

volume = "81",

pages = "3249--3252",

journal = "Journal of the American Ceramic Society",

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TY - JOUR

T1 - Solid-state phase relationships in the calcia-titania-zirconia system at 1200°C

AU - Swenson, Douglas

AU - Nieh, Tai-Gang

AU - Fournelle, John H.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 1998/12

Y1 - 1998/12

N2 - Phase relationships were investigated in the CaO-TiO2-ZrO2 system at 1200°C for compositions containing <50 mol% CaO using X-ray diffraction and electron probe microanalysis. The existence of two previously reported ternary phases, zirconolite (CaZrTi2O7) and calzirtite (Ca2Zr5Ti2O16), was confirmed. Each of these phases exhibited a significant range of homogeneity between TiO2 and ZrO2, while maintaining a nearly constant concentration of CaO. The ternary solubilities of the constituent binary phases were found to be small (typically <1 mol%), with the exceptions of the perovskites (CaTiO3 and CaZrO3). These latter phases displayed mutual solubilities of at least 22 mol% but exhibited significant variations in composition from grain to grain. Thermodynamic equilibrium was clearly not established in several samples, although most of the phase relationship information obtained was self-consistent.

AB - Phase relationships were investigated in the CaO-TiO2-ZrO2 system at 1200°C for compositions containing <50 mol% CaO using X-ray diffraction and electron probe microanalysis. The existence of two previously reported ternary phases, zirconolite (CaZrTi2O7) and calzirtite (Ca2Zr5Ti2O16), was confirmed. Each of these phases exhibited a significant range of homogeneity between TiO2 and ZrO2, while maintaining a nearly constant concentration of CaO. The ternary solubilities of the constituent binary phases were found to be small (typically <1 mol%), with the exceptions of the perovskites (CaTiO3 and CaZrO3). These latter phases displayed mutual solubilities of at least 22 mol% but exhibited significant variations in composition from grain to grain. Thermodynamic equilibrium was clearly not established in several samples, although most of the phase relationship information obtained was self-consistent.

UR - https://www.scopus.com/pages/publications/0032292428

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0032292428&origin=recordpage

U2 - 10.1111/j.1151-2916.1998.tb02763.x

DO - 10.1111/j.1151-2916.1998.tb02763.x

M3 - RGC 21 - Publication in refereed journal

SN - 0002-7820

VL - 81

SP - 3249

EP - 3252

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 12

ER -

Solid-state phase relationships in the calcia-titania-zirconia system at 1200°C

Abstract

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