The Mg2NiH4 film on nickel substrate: synthesis, properties and kinetics of formation

Baraban, A. P.; Chernov, Ilya; Дмитриев, В. А.; Elets, D.I.; Gabis, I. E.; Кузнецов, В. Г.; Voyt, A.P.

doi:10.1016/j.tsf.2022.139556

Cited by 4 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For pressed samples the growth kinetics of the RF is fully consistent with that described in (Baraban et al 2022) for the same temperature of 450 o C for a planar evolving reaction, namely, linear growth after some delay time (incubation). The red line in the graph represents a linear approximation.…”

Section: Resultssupporting

confidence: 78%

“…The flat configuration of the substrate-film system allowed the growth mechanism to be established. The kinetics of the increasing amount of the reacted fraction (RF) and XRD results obtained in the present work using powders allow us to state that the mechanism of Mg 2 NiH 4 hydride synthesis is similar to that described in (Baraban et al 2022).…”

Section: Introductionsupporting

confidence: 71%

“…The red line in the graph represents a linear approximation. The cut-off on the abscissa in our case is 1.16 hours, while it was 1.2 hours in (Baraban et al 2022), which can be considered a very good match. On the whole, the detailed similarity of the kinetics of the increase Direct synthesis of Mg 2 NiH 4 from MgH 2 and Ni in the amount of synthesized Mg 2 NiH 4 hydride indicates that the mechanisms of synthesis probably coincide as well.…”

Section: Resultsmentioning

confidence: 50%

“…Then, at the Mg 2 Ni-Mg 2 NiH 4 interface the hydride Mg 2 NiH 4 is synthesized, through which Mg and H atoms arrive from MgH 2 via the vacancy mechanism. Following (Baraban et al 2022), we consider that the constant growth rate of the RF is limited by the constant diffusion rate of nickel atoms through the layer of intermetallic compound MgNi 2 .…”

Section: Resultsmentioning

confidence: 99%

“…In (Baraban et al 2022), the growth of hydride film Mg 2 NiH 4 on the flat surface of nickel foil at 450 °C was considered upon interaction with MgH 2 powder in hydrogen at pressures exceeding, as in the present study, the decomposition pressures of MgH 2 and Mg 2 NiH 4 . The flat configuration of the substrate-film system allowed the growth mechanism to be established.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Direct synthesis of Mg2NiH4 from MgH2 and Ni

Baraban,

Dmitriev,

Gabis

et al. 2023

PCS

View full text Add to dashboard Cite

We showed that the exposure of a pressed mixture of MgH 2 and Ni powders to a hydrogen atmosphere at 450 °C leads to the direct formation of Mg 2 NiH 4 . No pre-milling was used. The reaction was carried out at a hydrogen pressure exceeding the equilibrium over MgH 2 and Mg 2 NiH 4 . The pressure invariability during the synthesis evidences the absence of a separate stage of magnesium hydride decomposition and stabilization of the synthesized hydride. The amount of Mg 2 NiH 4 was determined by the XRD and TDS methods. SEM with EDX microanalysis was used to examine the morphology of the reaction products. The influence of the exposure time and the synthesis temperature on the reaction yield was studied.

show abstract

Section: Resultssupporting

confidence: 78%

Section: Introductionsupporting

confidence: 71%

Section: Resultsmentioning

confidence: 50%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations