Phase equilibria in the Ni–Co–Ga alloy system

Ducher, R.; Kainuma, Ryosuke; Ishida, K.

doi:10.1016/j.jallcom.2007.11.103

Cited by 14 publications

(4 citation statements)

References 29 publications

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“…predicted structural features on the atomic level in the liquid are consistent with the experimental observation of the formation of the NiAl-rich B2 phase in the CoFeMnNiAl alloy, the Ni-Mn-Ga rich B2-structured matrix in the CoFeMnNiGa alloy, and the Ni 2 MnSn-type L2 1 -structured compound in the CoFeMnNiSn alloy. Similar phenomena like an isomorphous solid solution of the B2 (Co,Ni)Al phase at 1,300 C in the ternary Al-Co-Ni and B2 (Co,Ni)Ga phase at 1,000 C in the ternary Co-Ga-Ni were reported by Kainuma et al[36] and by Ducher et al[37], respectively. The congruent formation of the L2 1 Ni 2 MnSn compound at 1,140 C in the ternary Mn-Ni-Sn with a wide compositional range at lower temperatures was reported by Laudise et al[38].…”

supporting

confidence: 84%

Tailoring magnetic behavior of CoFeMnNiX (X = Al, Cr, Ga, and Sn) high entropy alloys by metal doping

et al. 2017

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supporting

confidence: 84%

Tailoring magnetic behavior of CoFeMnNiX (X = Al, Cr, Ga, and Sn) high entropy alloys by metal doping

et al. 2017

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“…Noteworthily, it was found that compared with Ni 1.5 Al-LDO-700, the diffraction peaks of Ni 1.5 GaAl-LDO-700 downshifted to 44.15, 51.45, and 75.74°, attributed to the lattice expansion of Ni and the formation of Ni 3 Ga alloy (JCPDS 65-0141) referenced from the Ni−Ga binary phase diagram (Figure 1a). 16,25 All samples demonstrated type IV isotherms with a H3 hysteresis loop attributed to the mesoporous characteristics (Figures 1b and S2), which are also observed by the pore size distributions obtained by the BJH method (inset figures). As listed in Table S1, increasing the Ni/Al ratio resulted in a gradual reduction of both BET SSA and pore volume, probably because of metal agglomeration and/or an increase in the crystallinity of the structure, 26 consistent with XRD patterns (Figure S1a).…”

Section: Resultssupporting

confidence: 75%

“…Additionally, the intensity of Ni peaks increased dramatically, indicating the increase in the Ni phase amount and the possible increase in the crystallinity structure of the catalyst and/or Ni crystal size at higher temperatures, which is in agreement with the Ni crystal size obtained from the Scherrer equation (Table S1). Noteworthily, it was found that compared with Ni 1.5 Al-LDO-700, the diffraction peaks of Ni 1.5 GaAl-LDO-700 downshifted to 44.15, 51.45, and 75.74°, attributed to the lattice expansion of Ni and the formation of Ni 3 Ga alloy (JCPDS 65-0141) referenced from the Ni–Ga binary phase diagram (Figure a). , …”

Section: Resultsmentioning

confidence: 97%

On-Demand, Highly Tunable, and Selective 5-Hydroxymethylfurfural Hydrogenation to Furan Diols Enabled by Ni and Ni₃Ga Alloy Catalysts

et al. 2022

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Catalytic conversion of the biobased platform chemical 5hydroxymethylfurfural (HMF) into high-value-added products (e.g., diols) has attracted considerable attention, where controlling the products' selectivity is a crucial and challenging issue. Herein, a series of hydrotalcite-based Ni and Ni 3 Ga alloy catalysts were prepared for HMF hydrogenation into furan diols. By optimizing the loaded metal and reduction temperature, >99% BHMTHF and 95.6% BHMF yields were gained over Ni 1.5 Al-LDO-700 and Ni 1.5 GaAl-LDO-700, respectively, under mild conditions. Characterizations and DFT calculations showed that the doped Ga resulted in charge transfer from Ga to Ni and disrupted the Ni arrangement, which weakened the furan ring adsorption and favored its tilted adsorption on the Ni 3 Ga alloy, consequently inhibited deep hydrogenation, and selectively produced BHMF. These catalysts were also versatile for hydrogenation of other furan aldehydes, achieving high selectivity toward un-/saturated alcohols on demand. This study provides an advanced strategy for the rational design of superior catalysts for tuning product selectivity on demand, with practical potential for upgrading biomass-derived platform molecules.

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“…Ni 2 CoZ (Z = Al, Ga, Sn) compounds were investigated. In the reacted samples from the calorimeter, fcc (Co, Ni) solid solution (Ni 69 [31].…”

Section: Ni 2 Cozmentioning

confidence: 99%

Standard enthalpies of formation of selected Ni2YZ Heusler compounds

Yin

Nash

Chen

et al. 2016

Journal of Alloys and Compounds

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The standard enthalpies of formation (Δ f H°) of selected ternary Ni-based Heusler compounds Ni 2 YZ (Y = Co, Cu, Fe, Hf, Mn, Ti, V; Z = Al, Ga, In, Si, Ge, Sn) were measured using high temperature direct reaction calorimetry. The measured standard enthalpies of formation (in kJ/mole of atoms) of the Heusler structured (L2 1 , prototype Cu 2 MnAl, Pearson symbol cF16, space group Fm3 _ m) compounds are: Ni 2 MnGa (-29.8 ± 3.9); Ni 2 MnIn (-24.5 ± 2.0); Ni 2 MnSn (-29.7 ± 2.9); Ni 2 TiGa (-42.5 ± 2.2); Ni 2 TiIn (-28.5 ± 1.1); Ni 2 TiSn (-46.8 ± 2.0), for the B2 compound (prototype CsCl, Pearson cP2, space group Pm3 _ m): Ni 2 MnAl (-32.0 ± 2.8), for the inverse Heusler structured (i-L2 1 , prototype Li 2 AgSb, Pearson symbol cF16, space group F4 _ 3m) compound: Ni 2 CuSn (-12.5 ± 2.1), for the compounds of the L1 2 (prototype AuCu 3 , Pearson symbol cP4, space group Pm3 _ m) structure: Ni 2 CuAl (-38.9 ± 3.1); Ni 2 FeGe (-25.8 ± 3.0). Several off-stoichiometric alloys in the Ni-Mn-Sn system were also investigated: Ni 0.55 Mn 0.20 Sn 0.25 .7). Values are compared with those from first principles calculations in published papers and the Open Quantum Materials Database (OQMD). Lattice parameters were determined using X-ray diffraction analysis. Microstructures were characterized using scanning electron microscopy (SEM) with an energy dispersive spectrometer (EDS). Differential scanning © 2015. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/ 2 calorimetry (DSC) was used to measure the melting points of the compounds.

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Phase equilibria in the Ni–Co–Ga alloy system

Cited by 14 publications

References 29 publications

Tailoring magnetic behavior of CoFeMnNiX (X = Al, Cr, Ga, and Sn) high entropy alloys by metal doping

Tailoring magnetic behavior of CoFeMnNiX (X = Al, Cr, Ga, and Sn) high entropy alloys by metal doping

On-Demand, Highly Tunable, and Selective 5-Hydroxymethylfurfural Hydrogenation to Furan Diols Enabled by Ni and Ni₃Ga Alloy Catalysts

Standard enthalpies of formation of selected Ni2YZ Heusler compounds

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Phase equilibria in the Ni–Co–Ga alloy system

Cited by 14 publications

References 29 publications

Tailoring magnetic behavior of CoFeMnNiX (X = Al, Cr, Ga, and Sn) high entropy alloys by metal doping

Tailoring magnetic behavior of CoFeMnNiX (X = Al, Cr, Ga, and Sn) high entropy alloys by metal doping

On-Demand, Highly Tunable, and Selective 5-Hydroxymethylfurfural Hydrogenation to Furan Diols Enabled by Ni and Ni3Ga Alloy Catalysts

Standard enthalpies of formation of selected Ni2YZ Heusler compounds

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Product

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On-Demand, Highly Tunable, and Selective 5-Hydroxymethylfurfural Hydrogenation to Furan Diols Enabled by Ni and Ni₃Ga Alloy Catalysts