An investigation of some palladium-titanium and some palladium-titanium-hydrogen alloys

Evans, John; Harris, I.R.; Guzei, L.S.

doi:10.1016/0022-5088(79)90186-3

Cited by 19 publications

(3 citation statements)

References 11 publications

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“…None of these reflections originates from the fcc-type structure instead from an atomically ordered, intermetallic Pd 3 Ti phase. Indeed, the pXRD profiles of Pd 3 Ti/C are in good agreement with the simulated pXRD pattern of Pd 3 Ti (Cu 3 Au structure, Pm � 3m, a = 3.888 Å) [40]. The atomic arrangements of Pd and Ti in the crystal are shown in Figure 1b.…”

Section: Electrochemical Experimentssupporting

confidence: 78%

Intermetallic Pd₃X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media

Kodiyath

Ramesh

Manikandan

et al. 2020

Science and Technology of Advanced Materials

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Two highly active and stable Pd-based intermetallic nanocrystals with early d-metals Pd 3 Ti and Pd 3 Zr have been developed. The nanocrystals are synthesized by co-reduction of the respective salts of Pd and Ti/Zr. Hard X-ray photoemission Spectroscopy (HAXPES) analysis of the nanocrystals indicates that the electronic properties of Pd are modified significantly, as evident from the lowering of the d-band center of Pd. The intermetallic nanocrystals dispersed in Vulcan carbon, Pd 3 Ti/C and Pd 3 Zr/C, exhibit improved electrocatalytic activity towards methanol and ethanol oxidation in an alkaline medium (0.5 M KOH), compared to those of commercially available catalysts such as Pd/C, Pt/C, and Pt 3 Sn/C. In addition, Pd 3 Ti/C and Pd 3 Zr/C show significantly higher activity towards the oxidation of formic acid in an acidic medium (0.5 M H 2 SO 4), compared to those of Pd/C and Pt/C. The modification of the d-band center of Pd as a result of the alloying of Pd with the early d-metals Ti and Zr may be responsible for the enhanced catalytic activity.

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Section: Electrochemical Experimentssupporting

confidence: 78%

Intermetallic Pd₃X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media

Kodiyath

Ramesh

Manikandan

et al. 2020

Science and Technology of Advanced Materials

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“…[12] Unit-cell parameters for the fcc solid solution have been reported. [26][27][28] 6 11.640 4.00 Pd 90 Fe 10 11.556 4.00 Pd 85 Fe 15 11.311 4.00 Pd 80 Fe 20 11.049 3.98 Table I and for nickel from Section III-H.…”

Section: H Solid Solution Pd(ni)mentioning

confidence: 99%

“…[12] The composition dependece of the unit-cell parameters was measured in the previous works. [15,16] In the present investigation, bulk alloys in the composition range 0 Ͻ x Ti Ͻ 0.20 (and also pure palladium) were heat treated at 1073 K for 5 days; filed alloys were then annealed at 1073 K for 5 minutes and water quenched. Guinier patterns of these alloys showed the solid solution Pd(Ti) homogeneously.…”

Section: A Solid Solution Pd(sc)mentioning

confidence: 99%

Partial atomic volume and partial molar enthalpy of formation of the 3d metals in the palladium-based solid solutions

Ellner

2004

Metall Mater Trans A

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The composition dependence of the average atomic volume, as well as of the enthalpy of formation, was investigated for the palladium-containing binary systems with the 3d metals. The partial atomic volume and the partial molar enthalpy of formation of the 3d metals were determined for the palladiumbased solid solutions (Pearson symbol cF4, space group Fm3 -m, Cu type). The 3d early transition metals (scandium, titanium, and vanadium) as well as the 3d 10 4s 2 . . . 3d 10 4s 2 4p metals (zinc and gallium) show (1) the partial atomic volume for the palladium-based solid solutions smaller than is their atomic volume in the nonbonded state and (2) significantly large (negative) values of the partial molar enthalpy of formation indicating a strong bond energy between atoms of palladium and those of the 3d early transition metals (as well as a strong bond energy between atoms of palladium and zinc or gallium atoms). The 3d late transition metals (and chromium) show (1) the partial atomic volume for the palladium-based solid solutions larger than is their atomic volume in the nonbonded state and (2) low (negative) values of the partial molar enthalpy of formation indicating weak bond energy between atoms of palladium and those of the 3d late transition metals.

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In Situ Synchrotron X‐Ray Diffraction Characterization of Corrosion Products of a Ti‐Based Metallic Glass for Implant Applications

Gostin

Addison

Morrell

et al. 2018

Adv Healthcare Materials

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Ti-based bulk metallic glasses are under consideration for implants due to their high yield strength and biocompatibility. In this work, in situ synchrotron X-ray diffraction (XRD) is used to investigate the corrosion products formed from corrosion of Ti Zr Cu Pd Sn bulk metallic glass in artificial corrosion pits in physiological saline (NaCl). It is found that Pd nanoparticles form in the interior of the pits during electrochemical dissolution. At a low pit growth potential, the change in lattice parameter of the Pd nanoparticles is consistent with the formation of palladium hydride. In addition, a salt layer very close to the dissolving interface is found to contain CuCl, PdCl , ZrOCl ∙8H O, Cu, Cu O, and several unidentified phases. The formation of Pd nanoparticles (16 ± 10 nm at 0.7 V vs Ag/AgCl) containing small amounts of the other alloying elements is confirmed by transmission electron microscopy. The addition of albumin and/or H O does not significantly influence the nature of the corrosion products. When considering the biological compatibility of the alloy, the biological reactivity of the corrosion products identified should be explored.

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An investigation of some palladium-titanium and some palladium-titanium-hydrogen alloys

Cited by 19 publications

References 11 publications

Intermetallic Pd₃X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media

Intermetallic Pd₃X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media

Partial atomic volume and partial molar enthalpy of formation of the 3d metals in the palladium-based solid solutions

In Situ Synchrotron X‐Ray Diffraction Characterization of Corrosion Products of a Ti‐Based Metallic Glass for Implant Applications

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An investigation of some palladium-titanium and some palladium-titanium-hydrogen alloys

Cited by 19 publications

References 11 publications

Intermetallic Pd3X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media

Intermetallic Pd3X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media

Partial atomic volume and partial molar enthalpy of formation of the 3d metals in the palladium-based solid solutions

In Situ Synchrotron X‐Ray Diffraction Characterization of Corrosion Products of a Ti‐Based Metallic Glass for Implant Applications

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Intermetallic Pd₃X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media

Intermetallic Pd₃X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media