Enthalpies of formation of Mo–Pt alloys by high temperature direct reaction synthesis calorimetry

Benarchid, My.Y.; Nugent, David; Fiorani, J.M.; Vilasi, Michel; Benlaharche, T.

doi:10.1016/j.jct.2008.10.006

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Effective Heat Of Formation (Ehf) Model1

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Cited by 8 publications

(2 citation statements)

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“…Based on the known values of the heat of formation (DH°) for Pt-Mo phases [11], the effective heat of formation (DH 0 ) of PtMo phases is calculated using Eq. (1) and is presented in Fig.…”

Section: Effective Heat Of Formation (Ehf) Modelmentioning

confidence: 99%

Effect of annealing on phase sequence and their composition in the Pt-coated Mo system

Khumalo

Topić

Comrie

et al. 2014

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Effective Heat Of Formation (Ehf) Modelmentioning

confidence: 99%

Effect of annealing on phase sequence and their composition in the Pt-coated Mo system

Khumalo

Topić

Comrie

et al. 2014

Nuclear Instruments and Methods in Physics Research Section B:

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“…The observed transport of Pt 1Àx Mo x alloy involves three basic steps: (a) transfer of Pt and Mo atoms from their respective sources to the TEM sample, (b) diffusion of the metal atoms, and (c) formation of the Pt 1Àx Mo x alloy. Since the formation enthalpy for Pt-rich Pt 1Àx Mo x alloy is negative at these temperatures, 36 we rule out this process as the rate-limiting step. Mass transport can occur via diffusion on ZrB 2 surfaces, through the bulk of the ZrB 2 film, and/or along the ZrB 2 /C and ZrB 2 /Al 2 O 3 interfaces.…”

mentioning

confidence: 99%

In situ transmission electron microscopy studies of the kinetics of Pt-Mo alloy diffusion in ZrB2 thin films

Jouanny

Pališaitis

Ngo

et al. 2013

Applied Physics Letters

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Using in situ high-temperature (1073–1173 K) transmission electron microscopy, we investigated the thermal stability of Pt and Mo in contact with polycrystalline ZrB2 thin films deposited on Al2O3(0001). During annealing, we observed the diffusion of cubic-structured Pt1−xMox (with x = 0.2 ± 0.1) along the length of the ZrB2 layer. From the time-dependent increase in diffusion lengths, we determined that the Pt1−xMox does not react with ZrB2, but diffuses along the surface with a constant temperature-dependent velocity. We identify the rate-limiting step controlling the observed phenomenon as the flux of Mo atoms with an associated activation barrier of 3.8 ± 0.5 eV.

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Thermodynamics

Haug–Warberg

Chen

Kattner

et al. 2016

Handbook of Software Solutions for ICME

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Enthalpies of formation of Mo–Pt alloys by high temperature direct reaction synthesis calorimetry

Cited by 8 publications

References 12 publications

Effect of annealing on phase sequence and their composition in the Pt-coated Mo system

Effect of annealing on phase sequence and their composition in the Pt-coated Mo system

In situ transmission electron microscopy studies of the kinetics of Pt-Mo alloy diffusion in ZrB2 thin films

Thermodynamics

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