Phase equilibria in the Li–Ti–O system and physical properties of Li2TiO3

Kleykamp, H.

doi:10.1016/s0920-3796(02)00120-5

Cited by 126 publications

(88 citation statements)

References 14 publications

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“…Such non-stoichiometry towards both Li and Ti rich compositions has frequently been reported in studies in the Li 2 O-TiO 2 system [31,36]. Additionally the recrystallization of orthosilicate was not clearly observed upon cooling from a composition of γ-Li 2 TiO 3 +liquid down to room temperature for intermediate compositions (samples 2-7).…”

Section: Phase Stabilitysupporting

confidence: 66%

“…LT samples fabricated by this method exhibit a single phase monoclinic β-Li 2 TiO 3 composition subsequent to firing at 900°C, while samples with increasing Si content exhibit some Li deficiency evident by the presence of a metasilicate secondary phase alongside the orthosilicate target phase. It should be noted that Li excess in Li 2 TiO 3 is a known phenomenon and thus some deviation from the projected LT-L2S tie-line is expected [29,31,36].…”

Section: Xrdmentioning

confidence: 99%

“…As both endpoints are congruently melting phases, the Li 2 TiO 3 -Li 4 SiO 4 composition range is considered to be a quasi-binary system. A summary of phase equilibria reported in the literature for the Li 2 O-TiO 2 -SiO 2 (LTS) ternary system is shown in Figure 1 [30][31][32][34][35][36][37]. In this figure the liquidus temperatures are taken from the most recent available references.…”

mentioning

confidence: 99%

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Solution based synthesis of mixed-phase materials in the Li2TiO3–Li4SiO4 system

Hanaor

Kolb

Gan

et al. 2015

Journal of Nuclear Materials

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Abstract:As candidate tritium breeder materials for use in the ITER helium cooled pebble bed, ceramic multiphasic compounds lying in the region of the quasi-binary lithium metatitanate-lithium orthosilicate system may exhibit mechanical and physical advantages relative to single phase materials. Here we present an organometallic solution-based synthesis procedure for the low-temperature fabrication of compounds in the Li 2 TiO 3 -Li 4 SiO 4 region and investigate phase stability and transformations through temperature varied X-ray diffraction and scanning calorimetry. Results demonstrate that the metatitanate and metasilicate phases Li 2 TiO 3 and Li 2 SiO 3 readily crystallise in nanocrystalline form at temperatures below 180°C. Lithium deficiency in the region of 5% results from Li sublimation from Li 4 SiO 4 and/or from excess Li incorporation in the metatitanate phase and brings about a stoichiometry shift and product compounds with mixed lithium orthosilicate/ metasilicate content towards the Si rich region and predominantly Li 2 TiO 3 content towards the Ti rich region. Above 1150°C the transformation of monoclinic to cubic γ-Li 2 TiO 3 disordered solid-solution occurs while the melting of silicate phases indicates a likely monotectic type system with a solidus line in the region 1050°-1100°C. Synthesis procedures involving a lithium chloride precursor are not likely to be a viable option for breeder pebble synthesis as this route was found to yield materials with a more significant Li-deficiency exhibiting the crystallisation of the Li 2 TiSiO 5 phase at intermediate compositions.

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Section: Phase Stabilitysupporting

confidence: 66%

Section: Xrdmentioning

confidence: 99%

mentioning

confidence: 99%

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Solution based synthesis of mixed-phase materials in the Li2TiO3–Li4SiO4 system

Hanaor

Kolb

Gan

et al. 2015

Journal of Nuclear Materials

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“…The compound Li 2 TiO 3 exists in two structural modifications, [1] a cubic form of space group Fm3m, [1][2][3][4][5][6][7][8][9][10][11] and a monoclinic structure of space group C2/c.…”

Section: Introductionmentioning

confidence: 99%

“…[1, [8][9][10][11] At low temperatures, the monoclinic form is stable, but it transforms to the cubic modification above ca. 1155°C [1,[8][9][10][11][12] before melting at ca.…”

Section: Introductionmentioning

confidence: 99%

In‐situ Synchrotron X‐ray Diffraction Study of the Formation of Cubic Li₂TiO₃ Under Hydrothermal Conditions

et al. 2011

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Synchrotron powder X-ray diffraction (PXRD) has been used to study in-situ the hydrothermal intercalation of lithium ions in titania powder following the reaction TiO 2 + 2 LiOH Ǟ Li 2 TiO 3 + H 2 O. Syntheses were performed in a sapphire capillary at temperatures between 133 and 230°C. By sequential Rietveld refinement of the PXRD data, the particle growth of the metastable cubic α-Li 2 TiO 3 compound was determined as a function of the reaction time, as well as the transforma-

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Characterization of the Phase Composition of Nanosized Lithium Titanates Synthesized by Inductive Thermal Plasma

Quesnel¹,

Soucy²,

Veilleux³

et al. 2015

Characterization of Minerals, Metals, and Materials 2015

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Phase equilibria in the Li–Ti–O system and physical properties of Li2TiO3

Cited by 126 publications

References 14 publications

Solution based synthesis of mixed-phase materials in the Li2TiO3–Li4SiO4 system

Solution based synthesis of mixed-phase materials in the Li2TiO3–Li4SiO4 system

In‐situ Synchrotron X‐ray Diffraction Study of the Formation of Cubic Li₂TiO₃ Under Hydrothermal Conditions

Characterization of the Phase Composition of Nanosized Lithium Titanates Synthesized by Inductive Thermal Plasma

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Phase equilibria in the Li–Ti–O system and physical properties of Li2TiO3

Cited by 126 publications

References 14 publications

Solution based synthesis of mixed-phase materials in the Li2TiO3–Li4SiO4 system

Solution based synthesis of mixed-phase materials in the Li2TiO3–Li4SiO4 system

In‐situ Synchrotron X‐ray Diffraction Study of the Formation of Cubic Li2TiO3 Under Hydrothermal Conditions

Characterization of the Phase Composition of Nanosized Lithium Titanates Synthesized by Inductive Thermal Plasma

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In‐situ Synchrotron X‐ray Diffraction Study of the Formation of Cubic Li₂TiO₃ Under Hydrothermal Conditions