Intermetallics最新文献_第10页

Study of microstructural evolution in NiAl-Steel laminate composite after shock wave loading and heat treatment NiAl-Steel层合复合材料冲击波加载及热处理后组织演变研究

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-27 DOI: 10.1016/j.intermet.2025.109097

A. Yu Malakhov , S.A. Seropyan , I.V. Denisov , I.V. Saikov , D.V. Shakhray

The paper presents a comparative study of two methods for the fabrication of Ni/Al-based metal-intermetallic laminate (MIL) composites within a steel matrix: shock wave loading (SWL) and a combined SWL/heat treatment (HT) method. Initiating the reaction in self-propagating high-temperature synthesis (SHS) mode under shock wave loading resulted in the formation of an intermetallic layer (IL) with an average microhardness of 500 HV. This IL exhibited both non-uniform thickness and cracking. The reaction initiated at the sample's end, where conditions conducive to SHS were established, and then propagated towards the top. At the top of the sample, the reaction products were quenched because heat removal exceeded heat generation. The two-step SWL/HT method ensured the formation of a multiphase IL (NiAl, Ni₂Al₃, Ni₃Al) without cracks, but it was accompanied by gas evolution, causing deformation and delamination. The microhardness varied from 370 to 850 HV, with an average of 530 HV. Optimizing the process by removing gases maintained the interface's integrity but resulted in localized transverse cracks. The average microhardness of the IL was 590 HV, with a range of 450–900 HV. The heating rate during HT significantly affected the completeness of the transformation: slow heating (11.5 °C/min) promoted more complete NiAl formation compared to rapid heating (23 °C/min). Recommendations for minimizing defects in each method were developed. The results obtained are of interest for fabricating composites with improved mechanical and thermal properties, which are in demand in the aerospace and energy industries.

本文比较研究了在钢基体中制备Ni/ al基金属间层压（MIL）复合材料的两种方法：激波加载（SWL）和激波加载/热处理（HT）相结合的方法。在激波载荷下以自传播高温合成（SHS）模式引发反应，形成平均显微硬度为500 HV的金属间层（IL）。该IL具有厚度不均匀和开裂的特点。反应开始于样品的末端，在那里建立了有利于SHS的条件，然后向顶部传播。在样品的顶部，反应产物被淬火，因为热量的释放超过了热量的产生。两步SWL/HT法确保了多相IL （NiAl, Ni2Al3, Ni3Al）的形成没有裂纹，但伴随着气体的析出，导致变形和分层。显微硬度为370 ~ 850 HV，平均为530 HV。通过去除气体来优化工艺，保持了界面的完整性，但导致了局部横向裂纹。IL的平均显微硬度为590 HV，范围为450 ~ 900 HV。高温过程中的加热速率显著影响转变的完整性：与快速加热（23°C/min）相比，缓慢加热（11.5°C/min）促进了更完整的NiAl形成。提出了将每种方法中的缺陷最小化的建议。所获得的结果对制造具有改进的机械和热性能的复合材料感兴趣，这在航空航天和能源工业中是有需求的。

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引用次数: 0

Microstructure and wear properties of (AlxCoCrFeNi)N0.5 dual-phase high-entropy alloy thin films prepared by magnetron sputtering 磁控溅射制备（AlxCoCrFeNi）N0.5双相高熵合金薄膜的显微组织和磨损性能

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-27 DOI: 10.1016/j.intermet.2025.109067

Yupeng Cao , Yingxian Ma , Shicheng Wei , Bo Wang , Haidong Bao , Yujiang Wang , Rui Zhou

The microstructure and wear properties of (Al_xCoCrFeNi)N_0.5 (x = 0.3, 0.5, 0.7) high-entropy alloy thin films deposited on the surface of E690 steel by magnetron sputtering were investigated herein. Transmission electron microscopy combined with energy-dispersive spectroscopy was employed to analyze the microstructural evolution and formation mechanisms. Scanning electron microscopy was coupled with nanoindentation and friction-wear tests to evaluate the effects of the microstructure on the properties (i.e., hardness, elastic modulus, friction coefficient, and wear rate). Finally, a conceptual model of the underlying physical phenomena was proposed to illustrate the observations and explain the relationship between the microstructure and wear properties. The results indicated that increasing the Al content promotes amorphous transformation in the films. When x = 0.5, the film exhibited a nanocrystalline-amorphous dual-phase structure, which alleviated agglomeration and promoted film growth. The (Al_0.5CoCrFeNi)N_0.5 film exhibited the highest average thickness (2.73 μm), as well as the highest hardness and elastic modulus (9.54 and 187.76 GPa, respectively), at this time, the wear performance is also the best, and the friction coefficient and wear rate are 0.101 and 0.739 × 10⁻¹⁵ m³/(N·m) respectively, which are reduced by 64.4 % and 54.4 % compared with the substrate; under the given deposition conditions. Ultimately, an appropriate mixture of nanocrystalline and amorphous regions can hinder dislocation movement and grain rotation, inhibit grain boundary sliding, and improve the wear resistance of the film. The research results provide insights for the preparation of dual-phase high-entropy alloy thin films with high wear resistance.

研究了磁控溅射沉积在E690钢表面的（AlxCoCrFeNi）N0.5 （x = 0.3, 0.5, 0.7）高熵合金薄膜的显微组织和磨损性能。采用透射电子显微镜结合能量色散光谱分析了其微观组织演变及形成机理。采用扫描电子显微镜、纳米压痕和摩擦磨损试验相结合的方法，评价微观结构对材料性能（硬度、弹性模量、摩擦系数和磨损率）的影响。最后，提出了一个潜在物理现象的概念模型来说明观察结果并解释微观结构与磨损性能之间的关系。结果表明，Al含量的增加促进了薄膜的非晶态转变。当x = 0.5时，薄膜呈现纳米晶-非晶双相结构，有利于减缓团聚，促进薄膜生长。（Al0.5CoCrFeNi）N0.5膜的平均厚度最高（2.73 μm），硬度和弹性模量最高（分别为9.54和187.76 GPa），此时的磨损性能也最好，摩擦系数和磨损率分别为0.101和0.739 × 10−15 m3/(N·m)，分别比基体降低了64.4%和54.4%；在给定沉积条件下。最终，纳米晶和非晶区域的适当混合可以阻碍位错运动和晶粒旋转，抑制晶界滑动，提高薄膜的耐磨性。研究结果为制备高耐磨性的双相高熵合金薄膜提供了参考。

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引用次数: 0

Effect of mechanical training on Ni-Mn-Ga-Cu-B porous shape memory alloy 机械训练对Ni-Mn-Ga-Cu-B多孔形状记忆合金的影响

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-27 DOI: 10.1016/j.intermet.2025.109096

Kunyu Wang , Zhiqiang Wang , Yunlong Li , Jie Zhu

Ni-Mn-Ga-Cu-B porous alloy was prepared via powder metallurgy using NaCl as a pore-forming agent. The influence of mechanical training on the phase transformation behavior of porous shape memory alloy was studied. The results revealed that cyclic compression induced residual martensite phases and saturated dislocations in the porous alloy, reducing the incompatibility between martensite and austenite. Higher applied stresses promoted the formation of martensite phases with c-axes perpendicular to the stress direction. The interplay between stress distribution during compression and phase transformation mechanisms were systematically explored.

以NaCl为成孔剂，采用粉末冶金法制备了Ni-Mn-Ga-Cu-B多孔合金。研究了机械训练对多孔形状记忆合金相变行为的影响。结果表明：循环压缩引起多孔合金中残余马氏体相和饱和位错，降低了马氏体与奥氏体的不相容；较高的外加应力促进了垂直于应力方向的c轴马氏体相的形成。系统探讨了压缩过程中应力分布与相变机理之间的相互作用。

引用次数: 0

Phase stability in a SiC/Mo5SiB2 (T2) diffusion couple at 1700 °C SiC/Mo5SiB2 （T2）扩散偶联1700℃时的相稳定性

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-27 DOI: 10.1016/j.intermet.2025.109100

J.R. Becker , L. Liu , C. Zhang , M. Niezgoda , J.H. Perepezko

To evaluate the phase stability, a diffusion couple experiment of Mo₅SiB₂ (T₂) and SiC in contact was conducted at 1700 °C for 150 h. The post-anneal bonded interface was examined by high-resolution scanning transmission electron microscopy (STEM). The results show no formation of other compounds and minimal interdiffusion between the two phases, indicating that T₂ and SiC are in thermodynamic equilibrium. A CALPHAD model phase diagram of T₂ in contact with SiC shows the predicted formation of MoB, Mo₂BC, and Mo₅Si₃C phases that were not seen. The discrepancy between the model prediction and the observed equilibria was due to the T₂ phase being treated as a line compound, when it really contains a homogeneity range. When accounting for the T₂ compositional variance, the model matched the experimental results. This was further confirmed by annealing a Mo-Si-B-C alloy at 1700 °C for 150 h, which showed a microstructure of T₂, SiC, Mo₅Si₃C, and MoB phases that matched the predicted phase equilibria in the improved thermodynamic model.

为了评价Mo5SiB2 （T2）与SiC在1700℃下接触150 h的扩散偶实验，通过高分辨率扫描透射电子显微镜（STEM）观察了退火后的键合界面。结果表明，T2和SiC处于热力学平衡状态，没有形成其他化合物，两相之间的相互扩散极小。T2与SiC接触时的CALPHAD模型相图显示了未见的MoB、Mo2BC和Mo5Si3C相的预测形成。模型预测与观测平衡之间的差异是由于T2相被视为线状化合物，而实际上它包含一个均匀性范围。考虑T2成分方差后，模型与实验结果吻合。在1700℃下退火150 h， Mo-Si-B-C合金的T2、SiC、Mo5Si3C和MoB相的微观结构与改进的热力学模型中预测的相平衡相匹配。

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引用次数: 0

Unraveling the mechanism underlying hydrogen storage improvement in TiZrNbCrFe high-entropy alloy via (Ti,Nb)/(Cr,Fe) stoichiometric ratio control 通过控制(Ti,Nb)/(Cr,Fe)化学计量比揭示TiZrNbCrFe高熵合金储氢性能改善机理

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-26 DOI: 10.1016/j.intermet.2025.109053

Sibo Wang , Hongkui Zhang , Zhen Wen , Yue Li , Tong Zhang , Yingdong Qu , Guanglong Li

TiZrNbCrFe is mainly composed of C14 Laves phase and has good kinetic performance. However, due to the low content of BCC phase, the maximum hydrogen storage capacity of this alloy is relatively low. To address the issue of low maximum hydrogen storage capacity of alloys, in this paper, high-entropy alloys (TiNb)_20+xZr₂₀(FeCr)_20-x (x = 0,5,10,15) were prepared by adjusting the ratio of type a elements (Ti, Nb) to type b elements (Cr, Fe). The results show that the proportion of BCC phase increases from 21.34 % to 92.52 % by adding Ti and Nb elements. The active hydrogen absorption and peak hydrogen storage capacity of the alloy are the best when the proportion of BCC phase is 86.92 %, that is, Ti₃₀Nb₃₀Zr₂₀Fe₁₀Cr₁₀ alloy. The first activation hydrogen absorption capacity of this alloy is as high as 1.88 wt %, which is 1.29 wt % higher than that of TiZrNbCrFe alloy. When the hydrogen pressure is 3 MPa and the temperature is 100 °C, the saturated hydrogen absorption is 2.04 wt %, which is 0.9 wt % higher than that of TiZrNbCrFe alloy. With the increase of Ti and Nb content, the dehydrogenation temperature increases from 218 °C to 419 °C, the stability of the hydride increases, and the difficulty of dehydrogenation increases. This paper provides a design idea for the composition control of high-entropy hydrogen storage materials.

TiZrNbCrFe主要由C14 Laves相组成，具有良好的动力学性能。然而，由于BCC相含量低，该合金的最大储氢容量相对较低。为解决合金最大储氢容量低的问题，本文通过调整a型元素（Ti, Nb）与b型元素（Cr, Fe）的比例，制备了高熵合金（TiNb）20+xZr20(FeCr)20-x （x = 0,5,10,15）。结果表明：加入Ti和Nb元素后，BCC相的比例由21.34%提高到92.52%；当BCC相含量为86.92%时，合金的活性吸氢量和峰值储氢容量最佳，即Ti30Nb30Zr20Fe10Cr10合金。该合金的第一次活化吸氢量高达1.88 wt %，比TiZrNbCrFe合金高1.29 wt %。当氢压力为3 MPa，温度为100℃时，饱和氢吸收率为2.04 wt %，比TiZrNbCrFe合金高0.9 wt %。随着Ti和Nb含量的增加，脱氢温度从218℃升高到419℃，氢化物的稳定性提高，脱氢难度增大。本文为高熵储氢材料的成分控制提供了一种设计思路。

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引用次数: 0

Enhanced Fenton-like catalytic performance of Fe-based metallic glass by nitrogen microalloying 氮微合金化增强铁基金属玻璃类fenton催化性能

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-26 DOI: 10.1016/j.intermet.2025.109099

Lansong Yang , Peixin Fu , Chen Yang, Shixin Tan, Shun-Xing Liang, Yuanzheng Yang

Metallic glasses (MGs) have attracted extensive attention in functional applications due to their long-range disordered atomic arrangement, making them as promising Fenton-like catalysts for wastewater treatment. However, due to the compositional limitations imposed by glass-forming ability, promoting catalytic degradation ability of MGs while retaining their disordered structure becomes challenging in alloy design. Inspired by the regulation function of electronic structure combined with atomic size-dependent structural disordering by nitrogen (N), herein, the microalloying of 0.2 at.% N in Fe₇₈Si₉B₁₃ MG is reported to show a significantly improved catalytic efficiency and stability for the degradation of rhodamine B (RhB) dye. Mechanistic investigations suggest that N microalloying effectively regulates the electron transfer efficiency and suppresses the surface coverage of oxides on Fe₇₈Si₉B₁₃ MG, thereby exposing abundant active sites (Fe⁰) for degradation reaction. In addition, the refinement of post-reaction surface products contributes to a strong diffusion and capture of reactants (e.g. H₂O₂ and dye molecules), facilitating the H₂O₂ activation and radical generation for enhanced degradation stability. This study provides a new perspective for material design in MG catalysts.

金属玻璃（MGs）由于其远距离无序原子排列，在功能应用方面受到了广泛的关注，成为废水处理中很有前途的类fenton催化剂。然而，由于玻璃形成能力的限制，在保持镁合金无序结构的同时提高其催化降解能力成为合金设计的挑战。受氮(N)对电子结构的调控作用和与原子尺寸相关的结构无序性的启发，本文提出了0.2 at的微合金化。fe78si9b13mg中的% N对罗丹明B （RhB）染料的降解效率和稳定性有显著提高。机制研究表明，N微合金化有效调节了fe78si9b13mg的电子传递效率，抑制了氧化物的表面覆盖，从而暴露出丰富的活性位点（Fe0）进行降解反应。此外，反应后表面产物的细化有助于反应物（如H2O2和染料分子）的强扩散和捕获，促进H2O2的活化和自由基的生成，从而增强降解稳定性。本研究为MG催化剂的材料设计提供了新的思路。

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引用次数: 0

The regulatory effect of Nb element on the oxidation performance and microstructure of AlCoCrFeNi2.1 high-entropy alloy Nb元素对AlCoCrFeNi2.1高熵合金氧化性能和组织的调控作用

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-24 DOI: 10.1016/j.intermet.2025.109091

Yinghui Dong , Zhaobing Cai , Juanjuan Hu , Bingxu Wang , Mengmeng Liu , Le Gu

In this study, an AlCoCrFeNb_0.4Ni_2.1 high-entropy alloy sample (HEAs) was developed to investigate the influence of Nb addition on the microstructure and high-temperature oxidation behavior of the AlCoCrFeNi_2.1 HEAs. The as-cast AlCoCrFeNi_2.1 HEAs exhibited a layered eutectic microstructure consisting of FCC and BCC phases. Upon the addition of 0.4 mol of Nb, grain refinement of both FCC and BCC phases was observed, along with an increase in the volume fraction of the BCC phase. Additionally, a (Fe, Cr, Co)₂Nb-type Laves phase was formed, and FCC precipitates were detected within the BCC matrix. Isothermal oxidation tests conducted at 800 °C for durations ranging from 5 to 50 h demonstrated that the AlCoCrFeNb_0.4Ni_2.1 HEAs exhibited superior oxidation resistance compared to the AlCoCrFeNi_2.1 HEAs. Specifically, the former showed a lower weight gain and a slower growth rate of the oxidation layer (4.81 μm after 50 h, compared to 6.48 μm for the latter). The primary oxidation products of AlCoCrFeNi_2.1 HEAs were Al₂O₃, accompanied by minor amounts of Fe₂O₃ and Cr₂O₃. In contrast, the AlCoCrFeNb_0.4Ni_2.1 HEAs formed a dense composite oxide layer composed of Cr₂O₃-Nb₂O₅ due to the presence of Nb. This research provides a novel approach for the design of materials suitable for high-temperature industrial applications.

本研究制备了AlCoCrFeNb0.4Ni2.1高熵合金样品（HEAs），研究Nb添加对AlCoCrFeNi2.1高熵合金显微组织和高温氧化行为的影响。铸态AlCoCrFeNi2.1 HEAs表现出由FCC相和BCC相组成的层状共晶组织。添加0.4 mol Nb后，FCC相和BCC相晶粒细化，BCC相体积分数增大。形成了（Fe, Cr, Co） 2nb型Laves相，并在BCC基体中检测到FCC析出物。在800℃下进行的5 ~ 50 h等温氧化试验表明，与AlCoCrFeNi2.1 HEAs相比，AlCoCrFeNb0.4Ni2.1 HEAs具有更好的抗氧化性。具体来说，前者的增重较低，氧化层的生长速度较慢（50 h后为4.81 μm，后者为6.48 μm）。AlCoCrFeNi2.1 HEAs的主要氧化产物为Al2O3，并伴有少量的Fe2O3和Cr2O3。相反，由于Nb的存在，AlCoCrFeNb0.4Ni2.1 HEAs形成了由Cr2O3-Nb2O5组成的致密复合氧化层。本研究为设计适合高温工业应用的材料提供了一种新的途径。

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引用次数: 0

Unravelling phase evolutions in gas atomized CoCrFeNiTi high-entropy alloy powders 气雾化CoCrFeNiTi高熵合金粉末的解旋相演化

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-24 DOI: 10.1016/j.intermet.2025.109017

Rasim Eriş , Ashok Meghwal , Richard F. Webster , Christopher C. Berndt , Andrew Siao Ming Ang , Paul Munroe

In the CoCrFeMnNi ‘Cantor’ high-entropy alloy (HEA), the substitution of Mn with the larger atomic radius element Ti, together with the rapid cooling rates achieved through gas atomization, results in intriguing phase transformations. This study presents a comprehensive microstructural analysis of gas atomized CoCrFeNiTi HEA powders, along with an evaluation of their nano-hardness properties. The predominantly spherical and homogeneous powders feature dendritic/interdendritic solidification, with Cr and Fe concentrating in the dendrites, while Ni and Ti segregate into the interdendrites. In contrast, Co shows more uniform distribution throughout the powders. Within the dendrites, two distinct phases—tetragonal σ and rhombohedral R—are identified, as their lattice structures undergo symmetry modifications due to elemental distributions and lattice distortions. In addition, the interdendritic region contains B2, B19' (or a variant), and R phases, displaying martensitic transformations. Exhibiting remarkable nano-hardness performance, this HEA feedstock holds significant potential for manufacturing technologies such as thermal spray.

在CoCrFeMnNi ‘ Cantor ’高熵合金（HEA）中，用更大原子半径的元素Ti取代Mn，再加上通过气体雾化实现的快速冷却速度，导致了有趣的相变。本研究对气雾化CoCrFeNiTi HEA粉末进行了全面的微观结构分析，并对其纳米硬度性能进行了评价。粉末以球状和均匀为主，具有枝晶/枝晶间凝固特征，Cr和Fe集中在枝晶中，而Ni和Ti偏析到枝晶间。相比之下，Co在粉末中的分布更为均匀。在枝晶内部，由于元素分布和晶格畸变导致晶格结构发生对称性改变，可以识别出两种不同的相——四方相σ和菱形相r。此外，枝晶间区含有B2、B19′（或其变体）和R相，表现为马氏体相变。这种HEA原料具有优异的纳米硬度性能，在热喷涂等制造技术中具有巨大的潜力。

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引用次数: 0

Structure and hydrogen storage properties of AB2-type (A = Ti, Zr; B = Cr, Mn, Fe, Co, Ni) C14 Laves phase high-entropy alloys ab2型（A = Ti, Zr; B = Cr, Mn, Fe, Co, Ni） C14 Laves相高熵合金的结构和储氢性能

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-22 DOI: 10.1016/j.intermet.2025.109089

Bingjie Liu , Hanfeng Sun , Shihai Guo , Zhenyu Hou , Xing Mu , Lihong Xu , Dongliang Zhao

The development of high-entropy alloys (HEAs) for hydrogen storage is hopeful for addressing critical limitations of conventional metal hydrides, such as high activation barriers, limited capacity, and poor cycling stability. Here, we report the novel AB₂-type (A = Ti, Zr; B = Cr, Mn, Fe, Co, Ni) C14 Laves phase HEAs, namely TiZrCrFeCoNi, TiZrCrMnFeCo, and TiZrCrMnFeNi, integrating thermodynamic calculations, arc-melting synthesis, microstructural characterization, hydrogen storage testing, and first-principles calculations. It is shown TiZrCrFeCoNi has very low affinity for hydrogen, which is mainly attributed to the relatively small cell volume. TiZrCrMnFeCo is able to absorb and release 0.94 wt% hydrogen rapidly at room temperature after a 400 °C thermal activation. Replacing Co with Ni atoms has a significant effect of improving hydrogen storage capacity. Strikingly, TiZrCrMnFeNi alloy, with outstanding kinetic and excellent cycling performance, can reversibly absorb and desorb hydrogen at room temperature with a capacity of 1.66 wt% without any activation treatment. Additionally, the ground-state structural and electronic properties of AB₂-type HEAs were clarified by first-principles calculations.

用于储氢的高熵合金（HEAs）的开发有望解决传统金属氢化物的关键局限性，如高激活障碍、有限的容量和较差的循环稳定性。本文报道了一种新型ab2型（A = Ti, Zr; B = Cr, Mn, Fe, Co, Ni） C14 laaves相HEAs，即TiZrCrFeCoNi， TiZrCrMnFeCo和TiZrCrMnFeNi，结合热力学计算，弧熔合成，显微结构表征，储氢测试和第一性原理计算。结果表明，TiZrCrFeCoNi对氢的亲和力很低，这主要是由于细胞体积相对较小。经过400℃的热活化后，tizrcrmnnfeco能够在室温下快速吸收和释放0.94 wt%的氢气。用Ni原子代替Co原子对提高储氢能力有显著效果。引人注目的是，TiZrCrMnFeNi合金具有优异的动力学和循环性能，在室温下，无需任何活化处理即可可逆吸氢和解吸氢，容量为1.66 wt%。此外，通过第一性原理计算澄清了ab2型HEAs的基态结构和电子性质。

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引用次数: 0

Novel Ti-based metallic glass coating free of toxic elements for bio-implant applications 新型无有毒元素钛基金属玻璃涂层用于生物植入物

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-11-20 DOI: 10.1016/j.intermet.2025.109085

Rongqiang Yan , Peng Du , Rongtao Zhu , Haoyang Xuan , Runchi Li , Zhiheng Jiang , Zhongyuan Suo , Jindong Liu , Liang Zhang , Guoqiang Xie

Despite the promising potential of Ti-based metallic glass (MG) coatings as biomaterials, their clinical applications are severely limited due to the presence of toxic elements, such as Al, Ni, Be. In this context, the novel Ti-Zr-Cu-Pd-Sn MG coatings without toxic elements was first prepared on a 316L stainless steel (SS) substrate by laser powder bed fusion (L-PBF) in this work. The resulting Ti-Zr-Cu-Pd-Sn MG coating exhibited a low dilution rate between coating and substrate, thereby alleviating issues related to decreased amorphous content and reduced interfacial strength caused by epitaxial growth of columnar crystals. With its high amorphous content and superior forming quality, the microhardness of coating reached 642.6 HV, significantly improved compared to 276.5 HV for the 316L SS substrate. Furthermore, exceptional corrosion resistance was demonstrated in Hanks' solution. The corrosion current density (I_corr) significantly decreased from 1.67 × 10⁻⁶ A/cm² for 316L SS to 1.29 × 10⁻⁷ A/cm² for Ti-Zr-Cu-Pd-Sn MG coating. Meanwhile, The MG coating can increase the corrosion potential of the substrate from −591V to −0.126V and the pitting potential from 0.086V to 0.566V at most. This novel high-performance MG coatings are expected to demonstrate tremendous application potential in the medical field.

尽管钛基金属玻璃（MG）涂层作为生物材料具有广阔的潜力，但由于存在Al、Ni、Be等有毒元素，其临床应用受到严重限制。在此背景下，本文首次在316L不锈钢（SS）基体上采用激光粉末床熔合（L-PBF）法制备了新型无有毒元素的Ti-Zr-Cu-Pd-Sn MG涂层。得到的Ti-Zr-Cu-Pd-Sn MG涂层在涂层和衬底之间的稀释率较低，从而缓解了柱状晶体外延生长导致的非晶含量减少和界面强度降低的问题。非晶含量高，成形质量好，涂层显微硬度达到642.6 HV，较316L SS基体的276.5 HV有显著提高。此外，汉克斯的溶液还具有优异的耐腐蚀性。腐蚀电流密度（Icorr）从316L SS涂层的1.67 × 10−6 A/cm2显著降低到Ti-Zr-Cu-Pd-Sn MG涂层的1.29 × 10−7 A/cm2。同时，MG涂层可使基体的腐蚀电位从−591V提高到−0.126V，点蚀电位从0.086V提高到0.566V。这种新型高性能MG涂料在医疗领域具有巨大的应用潜力。

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引用次数: 0