首页期刊导航|Journal of Alloys and Compounds
期刊信息/Journal information
Journal of Alloys and Compounds
Elsevier Science S.A.
Journal of Alloys and Compounds

Elsevier Science S.A.

0925-8388

Journal of Alloys and Compounds/Journal Journal of Alloys and CompoundsSCIISTPEI
正式出版
收录年代

    (165890)Corrigendum to: “In situ absorption synchrotron measurements, predictive modeling, microstructural analysis, and scanning probe measurements of laser melted Ti-6Al-4V single tracks for additive manufacturing applications” Journal of Alloys and Compounds 900 (2022) 163494

    Nicholas DerimowEdwin J. SchwalbachJake T. Benzing
    3页
    查看更多>>摘要：The authors regret that the printed version of the above article contained an error that propagated into the thermodynamic calculations. The laser spot size of 49.5 ?m, reported in Ref. [1], was the spot size at the focal plane, but the melting experiment was not conducted at the focal plane. The surface of the metal substrate, where melting occurred, was 2.8 mm below the focal plane as a defocused beam was desired. Therefore the correct laser spot size for these measurements is 122.5 ?m, based on a calculation of the beam diameter (1/e~2) and was recently published in a corrigendum to the original work [2].
      原文链接:
    • NSTL
    • Elsevier

    (165812)Equiaxed grain formation by intrinsic heterogeneous nucleation via rapid heating and cooling in additive manufacturing of aluminum-silicon hypoeutectic alloy

    Masayuki OkugawaYuta OhigashiYuya Furishiro
    6页
    查看更多>>摘要：The high strength of Al-Si hypoeutectic alloys additively manufactured by powder-bed fusion is of great scientifc interest. To date, the mechanism of grain refnement near the fusion line, which contradicts conventional Hunt's columnar-equiaxed transition criteria, remains to be elucidated. Here we present the frst report on the mechanism of grain refnement. When a laser was irradiated on cast Al-Si alloy consisting of coarse α-Al grain and α-Al/Si eutectic regions, grain refnement occurred only near the eutectic regions. This strongly suggests that the Si phase is crucial for grain refnement. Multi-phase-feld simulation revealed that rapid heating due to the laser irradiation results in unmelted Si particles even above the liquidus temperature and that the particles act as heterogeneous nucleation sites during the subsequent re-solidi-fcation. These results suggest the feasibility of a novel inoculant-free grain refnement that is applicable to eutectic alloys comprising phases with a signifcant melting point difference.
      原文链接:
    • NSTL
    • Elsevier

    Phase relations, structure, properties and DFT study of compounds in the Sc-rich part of the systems Sc-{Mn,Fe,Co,Ni}-Ga

    Rogl P.Binder G.Michor H.Bursik J....
    27页
    查看更多>>摘要：? 2022 The AuthorsPhase relations have been derived for the Sc-rich parts of the ternary systems Sc-T-Ga at 850 °C (T = Mn,Fe,Co,Ni) as well as for the corresponding regions of the pertinent binary systems. "Sc4Mn" was not observed, but hexagonal Sc2Ga (space group P63mc, unique type) is a binary phase (at 29–31 at% Ga) with a peritectic decomposition temperature (at 1075 °C) close to the corresponding eutectic with scandium at 1065 °C and 17.5 at% Ga. Electron microprobe analyses (EPMA) revealed very limited solid solubilities at 850 °C of T-elements in Sc (<2 at% T). Although the maximal solubility of Ga in Sc at 850 °C is about 1 at% Ga, it renders the Sc-phase brittle. An X-ray single crystal structure analysis and TEM investigation defined Sc2+xNi1?x (x = 0.15) as a highly disordered Ti2Ni-type related to the type of disorder known for Dy5Pd2. Whereas the isothermal ternary sections for Sc-{Mn,Fe}-Ga are characterized by one ternary compound, Sc54{Mn,Fe,Ga}17 with the orthorhombic Hf54Os17-type (space group Immm), the systems with Co, Ni contain a so-called kappa (κ) phase, Sc10(Co1?xGax)3Co and Sc10(Ni1?xGax)3Ni. Both phases are occupation variants of the κ-Hf9Mo4B-type (space group P63/mmc). Besides that, the Sc-Co-Ga system at 850 °C comprises also a hitherto unknown representative of the Hf54Os17-type as well as two further ternary solid solution phases: Sc15?x?y□yCo3+x?zGa1+z (unique structure type, space group Immm; x = 1.60, y = 0.58; 0 ≤z ≤ 0.82) and Sc50+xCo13?zGa3+z (ε-Mg26?xAg7+x type, space group Fm-3; x = 0.84; 0 ≤z ≤ 1). For all compounds the crystal structures were derived from X-ray single crystal studies, some even at several compositions. The characteristic features of all structure types are non-regular Sc-icosahedra centered by (T,Ga) atoms. Whereas κ-Sc10(T1?xGax)3T phases (T = Co,Ni) form a typical network of corner-connected empty octahedra Sc6, which encompass Sc-centered icosahedra Sc6Ga6 and T-centered trigonal prisms T[Sc6], the Sc54(T,Ga)17 phases are made of (T,Ga)-centered defect icosahedron-clusters (T = Mn,Fe,Co). The ternary compounds exhibit remarkable large homogeneity regions mainly at practically constant Sc-contents i.e. deviating only slightly from T/Ga exchange pointing towards Sc-richer limits: at 850 °C from 12 to 14.6 at% Ga for the Co-κ-phase and from 2.1 to 15.4 at% Ga for the Ni-κ-phase; from about 6–12 at% for the phases Sc54{Mn,Co,Ga}17, but from 2.8 to 12.3 at% Ga in the case of Sc54{Fe,Ga}17. It should be mentioned that Sc54{Fe,Ga}17 as well as κ-Sc10(Ni,Ga)4 approach the corresponding binary system almost joining with binary cubic Sc29Fe6 or at least indicating a vanishing instability for the binary hypothetical kappa phase “Sc10Ni4”. Physical properties have been studied for the compounds richest in Sc: specific heat and electrical conductivity measurements infer metallic behavior for the Sc54(T,Ga)17 phases. Whereas Sc54Fe9.4Ga7.6 and Sc54Co7.3Ga9.7 are almost temperature independent paramagnets, Sc54Mn8.5Ga8.5 exhibits an approximate Curie-Weiss behavior: χ0 = 1.03 × 10?3 emu/mol; Θp = 15.8 K, μeff = 2.23 μB/Mn. At low temperatures it reveals a weakly interacting spin glass system with a spin-freezing anomaly at around 8 K. Hardness and elastic moduli are in the range of typically polar intermetallics. Chemical bonding and charge transfer is elucidated from DFT calculations and eDOS for the kappa phases, Sc10(Co1?xGax)3Co (x = 0, 0.67, 1), Sc10(Ni1?xGax)3Ni (x = 0.67), as well as for the compounds with selected composition Sc54{Mn,Fe,Co}10Ga7 and showed high electron localization inside the empty Sc6 octahedra for all studied compounds and related kappa phases, which may attract small and highly electronegative elements.
      原文链接:
    • NSTL
    • Elsevier

    Pseudocapacitive enhancement for layered PI@MXene porous organic cathode in advanced lithium-ion batteries

    Huang X.-W.Liao S.-Y.Li Y.-Z.Liu C.-S....
    10页
    查看更多>>摘要：? 2022 Elsevier B.V.Polyimide (PI) organic cathode has recently gained popularity, but the insufficient utilization of the redox-active sites restricts its applications due to the poor ionic and electronic transporting performances. A new layered porous organic cathode was designed/fabricated by using few-layered MXene as the matrix, and porous polyimide (PI) as the coating to activate the active carbonyl groups (PI@MXene). The bonding structures of the as-synthesized samples were tested by FT-IR spectroscopy. The existence of few-layered MXene in the sample was confirmed by XRD and XPS analysis. By adjusting the ratio of MXene, PI@MXene with 5 wt% MXene (PI@5%MXene) shows the surface morphology of thin layered porous structure. Due to the existence of few-layered MXene, PI@ 5%MXene porous cathode can provide multiple channels for fast electronic and ionic transporting inside the composite, resulting in the enhanced pseudocapacitive effect. Therefore, the PI@ 5%MXene cell deserves excellent electrochemical performances. This work may provide a promising strategy for the development of high-performance polyimide hybrid electrodes.
      原文链接:
    • NSTL

    Alloying and mechanical properties of W-Fe-B ternary system

    Gao Q.Lu Z.Jia L.Zhang Y....
    6页
    查看更多>>摘要：? 2022 Elsevier B.V.In this work, W-Fe-B ternary system alloy was prepared using W, FeB and Fe powders and the pressure-free sintering route. The phase transformation, thermodynamic behavior, microstructure and mechanical properties of alloy from 700 to 1500 ℃ are systematically investigated. After sintering, the microstructure of alloy was composed W2FeB2 hard phase and W-Fe binder phase. The formation of W2FeB2 phase during solid-state sintering occurred by the reactions of 2 W+ 2FeB = W2FeB2 +Fe and 2 W+ 2Fe2B = W2FeB2 + 3Fe. During liquid-phase sintering, two liquid phases appeared, which were sequentially generated by the reactions of γ-Fe + Fe2B + W2B = L1 and δ-Fe + L1 + W2FeB2 = L2, respectively. The alloy exhibited excellent comprehensive mechanical properties with hardness of 438.9HV and compressive strength of 702 MPa at 1300 ℃ sintering. In summary, these findings looked promising for future preparation and application of high-performance W-Fe-B system hard alloy.
      原文链接:
    • NSTL
    • Elsevier

    Heterointerface engineering of hierarchical SnS/ZnS with Rich Phase Boundaries rich phase boundaries for superior sodium storage performance

    Bian D.Cheng X.Li H.Qiao S....
    9页
    查看更多>>摘要：? 2022 Elsevier B.V.SnS has been extensively studied as an anode material for sodium storage owing to its high capacity and unique layer spacing. However, the rapid capacity decay and sluggish reaction kinetics result in SnS exhibiting poor electrochemical performance, which prevents its practical application. Herein, the hollow SnS/ZnS nanoboxes (ZSS@NC) with rich phase boundaries have been constructed and utilized as the anode material of SIBs. The in-situ XRD analysis clearly illustrates the structural transformation of the electrode material during sodium storage and the regeneration of the heterointerface. Furthermore, kinetic analysis combined with ex-situ tests show that the excellent properties of heterostructure composites are inextricably linked to the synergistic effect of heterojunction surfaces. As expected, the ZSS@NC heterostructure provides a reversible capacity of 553.5 mA h g?1 at 0.2 A g?1 and good rate capability with an average capacity of 62.3% at 5 A g?1 compared to 0.1 A g?1. The elevated Na-storage properties indicate that the heterointerface engineering strategy has a broad promise for improving the application of electrode materials.
      原文链接:
    • NSTL
    • Elsevier

    High responsivity and broadband polarized photodetectors based on InSe/ReSe2 van der Waals heterostructures

    Du C.Gao H.Du W.Li J....
    7页
    查看更多>>摘要：? 2022Van der Waals (vdWs) heterostructures constructed by different two dimensional materials provides excellent platforms to fulfill superior capabilities and multiple functionalities in high-performance optoelectronic devices. Herein, a novel InSe/ReSe2 vdWs p-n junction heterostructure for broadband linear-polarized photodetection ranging from ultraviolet (UV) to infrared (IR) spectrum is demonstrated. Owing to the enhanced light absorption and the intralayer transition of electron-hole pairs companied with interlayer transition in the InSe/ReSe2 vdW heterostructures with type-II band alignment, the photodetector exhibits extraordinary photoresponsivity about 53.29 A/W at 300 nm, 16.01 A/W at 638 nm, and 3.54 A/W at 980 nm, which is beyond the photoresponse cutoff of the corresponding individual InSe and ReSe2 devices. Meanwhile, the maximum detectivity D* reaches up to 1.33 × 1011 Jones, 4.00 × 1010 Jones, and 8.87 × 109 Jones at 300 nm, 638 nm, and 980 nm, respectively. Moreover, the response speed of rise/decay times reaches to 0.36/0.39 ms, which are two orders of magnitude faster than the currently reported values. These results suggest that the ReSe2 related vdW heterostructures offer an opportunity to develop next-generation high performance broadband ultra-fast polarized photodetectors.
      原文链接:
    • NSTL
    • Elsevier

    Heterostructured MXene-derived oxides as superior photocatalysts for MB degradation

    Liu T.Yang C.Zhang X.Lin X....
    13页
    查看更多>>摘要：? 2022 Elsevier B.V.This work offers a simple and effective strategy to design a two-dimensional layer heterostructure of carbon/Ti-based oxide nanocomposites via a long-term oxidation process of MXene (Ti3C2Tx). Oxidation kinetics parameters concluded that MXene initially reacted with oxygen by forming the carbon layer and nanostructured Ti-based oxides with a homogeneous distribution, including TiOF2 and TiO2, whereas the further oxidation process was governed by oxygen diffusion. It suggested that lower oxidation temperature and longer time (300 °C/1 h) facilitated to fabricate carbon-supported TiO2 @TiOF2 heterojunction nanocomposites with a unique 2D layer structure, which achieved a 90 % removal of methylene blue (MB) at 1 h under visible light illumination, owning to its large specific surface area, good electronic conductivity, narrowed band-gap, enhanced absorption in the visible range and high charge separation efficiency. Hence, the designed MXene-derived oxides were considered as promising candidates for wide-range responsive photocatalytic degradation of pollutants.
      原文链接:
    • NSTL
    • Elsevier

    Tin (Sn) at high pressure: Review, X-ray diffraction, DFT calculations, and Gibbs energy modeling

    Deffrennes G.Faure P.Oudot B.Bottin F....
    20页
    查看更多>>摘要：? 2022 Elsevier B.V.An assessment of the Sn unary system is presented. First, the literature on phase equilibria, the thermodynamic properties, the volume and related properties, and shock compression of tin is thoroughly reviewed. Second, the Sn system is investigated by means of synchrotron X-ray diffraction in a diamond-anvil cell up to pressures and temperatures of 57 GPa and 730 K. New information is obtained on the thermal stability and thermal expansion coefficient of the γ (I4/mmm) and γ’’ (Im3ˉm) phases. Third, density functional theory calculations are conducted on the six allotropic phases of tin observed in experiments using both a local density approximation (LDA) and a generalized gradient approximation (GGA) functional. This combined experimental and theoretical investigation provides further insights on the pronounced metastable nature of Sn in the 30–70 GPa range. Last, a Gibbs energy modeling is conducted using the recently proposed Joubert-Lu-Grover model which is compatible with the CALPHAD method. Special emphasis is placed on discussing extrapolations to high pressures and temperatures of the volume and of the thermodynamic properties. While the description of the heat capacity is approximate at moderate pressure, all available data are closely reproduced up to 2500 K, which is 5 times higher than the atmospheric pressure melting point of tin, and 150 GPa, which is almost 3 times the standard bulk modulus of β-Sn.
      原文链接:
    • NSTL
    • Elsevier

    An ultra-high power density supercapacitor: Cu(II) phthalocyanine tetrasulfonic acid tetrasodium salt doped polyaniline

    Arvas M.B.Sahin Y.Yazar S.
    13页
    查看更多>>摘要：? 2022 Elsevier B.V.In this study, an excellent electrode and supercapacitor performance with aqueous electrolyte exhibiting high operating voltage was obtained. Cu(II) phthalocyanine tetrasulfonic acid tetrasodium salt (CuPcTs) was used as a dopant in the polymerization of aniline on carbon felt electrode (CFt) by one-step hydrothermal method. Scanning electron microscopy (SEM) was used to analyze the morphological structure of PANI and CuPcTs doped PANI electrodes. Chemical analysis of the electrodes was performed using X-Ray diffractometry (XRD) and Fourier transform infrared spectroscopy (FT-IR); thermal properties of the electrodes were investigated using thermogravimetric analysis (TG/DTA). The surface area and pore volume of the electrodes were investigated using Brunauer-Emmett-Teller (BET) analysis. The electrochemical properties of the electrodes were investigated using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) methods. With the addition of CuPcTs and the use of graphite plate (GP) as the counter electrode, an asymmetrical supercapacitor was created for pseudocapacitive supercapacitors, in which the properties of redox materials were improved. CuPcTs doped PANI electrode showed a high specific capacitance of 982.2 F g?1 at 5 mV s?1 and showed excellent rate capability at different current densities of charge-discharge tests. Furthermore, wide operating-voltage of 3.2 V exhibited an ultra-high energy density value of 12800 W kg?1 and had an energy density of 764.4 Wh kg?1. The electrode and supercapacitor displayed retention of capacitance performances of 91.4% and 79.7% after 1000 and 5000 cycles in aqueous electrolyte, respectively.
      原文链接:
    • NSTL
    • Elsevier