On the constitution and thermodynamic modelling of the system Ti–Ni–Sn

Gürth, M.; Grytsiv, A.; Vřešťál, Jan; Romaka, V.V.; Giester, Gerald; Bauer, E.; Rogl, P.

doi:10.1039/c5ra16074j

Cited by 46 publications

(36 citation statements)

References 45 publications

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“…from [22]. The schematic is reasonably consistent with the reported congruent melting of the fH phase at 1720K and the incongruent melting of hH at ~1455K [21].…”

Section: Discussionsupporting

confidence: 78%

“…The distinct dendritic shape of the fH regions clearly implies TiNi 2 Sn is the primary phase formed during solidification, even though the overall composition is much closer to TiNiSn. The behavior is consistent with the incongruent melting of the hH phase, as discussed elsewhere [21,22].…”

Section: Resultssupporting

confidence: 68%

“…Phase Evolution during Solidification: Understanding the phase and microstructure evolution during solidification requires a quantitative description of the liquidus and solidus surfaces in the Ni-Sn-Ti ternary, which has only recently become available [22]. The portion of the liquidus surface relevant to the present problem is depicted in Fig.…”

Section: Discussionmentioning

confidence: 99%

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Microstructure Evolution of Biphasic TiNi1+x Sn Thermoelectric Materials

Verma

Douglas

Krämer

et al. 2016

Metall Mater Trans A

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The effects of thermal treatment on the microstructure of bi-phasic materials comprising halfHeusler (hH) and full-Heusler (fH) phases, as well as on their associated thermal conductivity, are discussed. The focus is on a biphasic hH/fH alloy of nominal stoichiometry TiNi 1.2 Sn, synthesized by containerless (magnetic levitation) induction melting. The alloy samples were exposed to various heat treatments to generate microstructures containing second phase precipitates ranging from ~10 nm to a few micrometers. The materials were characterized with regard to morphology, size, shape and orientation relationship of the fH and hH phases, both of which are present as precipitates within larger regions of the counterpart phase. The solidification path of the alloy and its implications for the subsequent microstructure evolution during heat treatment were elucidated, and relationships with the ensuing thermal conductivity were characterized.

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“…from [22]. The schematic is reasonably consistent with the reported congruent melting of the fH phase at 1720K and the incongruent melting of hH at ~1455K [21].…”

Section: Discussionsupporting

confidence: 78%

Section: Resultssupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure Evolution of Biphasic TiNi1+x Sn Thermoelectric Materials

Verma

Douglas

Krämer

et al. 2016

Metall Mater Trans A

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“…A similarly large solubility region at 1123 K (850 °C) has recently been found in the system Ti-Ni-Sn that extends between TiNi-TiNi 2 Sn-TiNi 1.654 Sn [13] Table 1). Blue triangles mark the nominal composition of the sample and red diamonds mark the refined iHphase composition for that sample (sample with y = 0.1 contains two iH phases).…”

mentioning

confidence: 94%

Ternary Phases (Heusler) in the System Ti-Co-Sn

Kosinskiy

Karlsen

Sørby

et al. 2016

Metallurgical and Materials Transactions E

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Some of the Heusler-phases (XY 2 Z and XYZ) are known to have large homogeneity ranges which can be useful for tuning material properties. In this work we have revised the isothermal section of the Ti-Co-Sn system at 973 K (700 °C). 29 ternary compositions, mostly in the regions TiCo 2-x Sn for 0 ≤ x ≤ 1 and Ti 1+y Co 2 Sn 1-y for 0 ≤ y ≤ 1, were prepared by arc-melting, then ball milled and annealed. The resulting annealed powder samples were studied by applying the Rietveld method to X-ray and neutron powder diffraction data.

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“…They presented isothermal section at 773 K. Two type of compounds halfHeusler and Heusler were found in the system. Recently the system was investigated from Gürth et al (2015) by isothermal section and phase equilibria and Berche et al (2016) using three binary systems. The binary systems were thermodynamically investigated and used in the calculations.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic investigation of liquid properties of the Ni–Sn–Ti ternary system using CALPHAD method and geometric models

Gandova

2016

jaar

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Predictions for the liquid Ni-Sn-Ti alloys thermodynamic properties (molar excess Gibbs energy) are presented. The calculations were performed in the temperature range 1000-2000 K. Geometric models (using data from the binary end-systems) were used and the respective calculated molar excess Gibbs energy values were compared to CALPHAD method assessments. The concentration dependences of the liquid phase thermodynamic properties along different vertical sections Sn:Ti, Ni:Ti and Ni:Sn were estimated. Ternary interaction parameters (L 0 , L 1 and L 2 ) of the liquid phase were determined using General solution (geometric) model from thermodynamic data of the binary end-systems (Ni-Sn, Ni-Ti, Sn-Ti). Ternary parameters exhibit values: L 0 = -70360.5 -0.263*T; L 1 = -113023 -11.574*T; L 2 = -131755 -17.101*T. Negative molar excess Gibbs energies were obtained by all models.

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On the constitution and thermodynamic modelling of the system Ti–Ni–Sn

Abstract: Experimental and calculated phase equilibria for the system Ti–Ni–Sn.

Cited by 46 publications

References 45 publications

Microstructure Evolution of Biphasic TiNi1+x Sn Thermoelectric Materials

Microstructure Evolution of Biphasic TiNi1+x Sn Thermoelectric Materials

Ternary Phases (Heusler) in the System Ti-Co-Sn

Thermodynamic investigation of liquid properties of the Ni–Sn–Ti ternary system using CALPHAD method and geometric models

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