Rare Metals最新文献

{"title":"Recent advances in green H2O2 production via metal-based functional materials: applications, strategies, and catalytic mechanisms","authors":"Dan-Hua Jiao,&nbsp;Ying Li,&nbsp;Xiao-Dong Cai,&nbsp;Qi-Zhao Wang,&nbsp;Yue Wang","doi":"10.1007/s12598-025-03285-z","DOIUrl":"10.1007/s12598-025-03285-z","url":null,"abstract":"<div><p>Hydrogen peroxide (H₂O₂) is highly required in various applications. The development of catalysts exhibiting elevated catalytic activity, selectivity, and stability is essential for H₂O₂ production technology. Metal-based catalysts are widely used for 2e⁻ ORR (oxygen reduction reaction) because of their adjustable structure, chemical stability, and availability. However, due to competition with the 4e⁻ ORR, modifications are often conducted to balance activity and selectivity. Common techniques include altering the surface electronic structure of catalysts and the interaction between active sites and intermediates. This review discusses diverse catalyst types (including precious and transition metals, single-atom catalysts, and MOFs/COFs) along with modification strategies (such as morphological control, electronic structure tuning, conductivity enhancement, and wettability improvement). The objective is to elucidate catalyst design and associated reaction mechanisms, as well as the relationship between catalyst structure and activity, in order to provide an insight for producing H₂O₂ in an efficient, highly selective, and stable manner.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"3593 - 3621"},"PeriodicalIF":9.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulating fracture behaviors and mechanical properties of sintered Nd–Fe–B magnet by reconstructing grain boundaries","authors":"Xiao-Qian Bao,&nbsp;Ying Yu,&nbsp;Zi-Hao Wang,&nbsp;Shuo Gao,&nbsp;Hai-Jun Yu,&nbsp;Sheng-En Guan,&nbsp;Ji-Heng Li,&nbsp;Ming-Li Qin,&nbsp;Xue-Xu Gao","doi":"10.1007/s12598-025-03259-1","DOIUrl":"10.1007/s12598-025-03259-1","url":null,"abstract":"<div><p>In this paper, the fracture behaviors and interface stresses of sintered Nd–Fe–B magnets were investigated. It was revealed that cracks propagated along the interfaces of Nd₂Fe₁₄B/Nd₂Fe₁₄B, Nd₂Fe₁₄B/Nd-rich phases and within Nd-rich phases. The misfits between 2:14:1 and Nd-rich phases were quantitatively determined, reflecting the concentration of interface stresses in magnet. Grain boundaries of magnet were reconstructed by diffusing Tb-containing and Tb-free sources, respectively. The Tb-rich shells at extensive layers of 2:14:1 grains caused lattice distortion, i.e., internal stresses, resulting in the crack mode changing from intergranular to transgranular in near surfaces of Tb-containing diffused magnets. Therefore, the bending strengths were deteriorated although the coercivities were apparently enhanced. In the case of Tb-free Pr–Cu diffused magnet, the Pr and Cu elements were enriched at grain boundaries, and the misfits between 2:14:1 and Nd-rich phases were declined, lowering interface stresses and strengthening grain boundaries. The mechanical and magnetic properties of Pr–Cu diffused magnet were simultaneously improved.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3351 - 3361"},"PeriodicalIF":9.6,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced perovskite solar cell performance via low-temperature ALD-Al2O3 interface modification","authors":"Yao Xiao,&nbsp;Zong-Cun Liang,&nbsp;Bang-Qi Jiang,&nbsp;Xuan-Fei Kuang,&nbsp;Zi-Yue Rao,&nbsp;Zhen-Jia Wang,&nbsp;Yu-Sen Lin,&nbsp;Zhi Xu","doi":"10.1007/s12598-025-03346-3","DOIUrl":"10.1007/s12598-025-03346-3","url":null,"abstract":"<div><p>Inverted perovskite solar cells, which nickel oxide (NiO_<i>x</i>) has been widely employed as a hole transport layer, have shown promise for perovskite–silicon tandem solar cells. However, the deficient quality of perovskite/NiO_<i>x</i> interface has constrained the performance and stability of the solar cells. In this paper, low-temperature atomic layer deposition (ALD) was employed to prepare a nanometer aluminum oxide (Al₂O₃) layer that effectively blocks carriers recombination, facilitates carriers transport by improving the valence band maximum (VBM) alignment between HTL and perovskite and enhances the morphology of self-assembled monolayer (SAM). The interface between NiO_<i>x</i> and perovskite was modified by the embedded Al₂O₃ layer, achieving an open current voltage (<i>V</i>_oc) of 1.19 V and a short-circuit current density (<i>J</i>_sc) of 22.98 mA cm⁻². The efficiency of the champion cell was 22.22% at 1.5 AM (0.2 cm²), which was a notable enhancement compared to solar cells of average power conversion efficiency (PCE) 20.33% without Al₂O₃ passivation layer. The passivated perovskite solar cell exhibits enhanced stability in degradation tests, retaining 85.70% of the initial PCE after storage in ambient air (40%–60% relative humidity (R.H.)) at 25 °C for 100 h. The results show the potential of low-temperature ALD-Al₂O₃ in inverted perovskite solar cells as well as perovskite–silicon tandem solar cells.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3060 - 3068"},"PeriodicalIF":9.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of Mn in the stabilization of adiabatic temperature changes of LaFe11.2−xMnxCo0.7Si1.1 alloys in an alternating magnetic field","authors":"Adler Gamzatov,&nbsp;Nurizhat Abdulkadirova,&nbsp;Kamil Kamilov,&nbsp;Akhmed Batdalov,&nbsp;Akhmed Aliev,&nbsp;Piotr Gebara,&nbsp;Hu Zhang","doi":"10.1007/s12598-025-03266-2","DOIUrl":"10.1007/s12598-025-03266-2","url":null,"abstract":"<div><p>The results of the study of the effect of partial substitution of Fe by Mn in the LaFe_{11.2−<i>x</i>}Mn_<i>x</i>Co_0.7Si_1.1 system on magnetization, specific heat, magnetostriction and magnetocaloric effect are presented. Direct measurements of the adiabatic temperature change (∆<i>T</i>_ad) were carried out in alternating magnetic fields (AMF) using the magnetic field modulation method. Partial substitution of Fe atoms by Mn atoms leads to a shift in the Curie temperature (<i>T</i>_C) towards lower temperatures without a noticeable deterioration in magnetic properties. A correlation was found between the structural component of the magnetocaloric effect and the stability of the frequency of the ∆<i>T</i>_ad in the AMFs—an increase in the manganese concentration leads to a decrease in magnetostriction and to a lower dependence of ∆<i>T</i>_ad on the frequency of the magnetic field. Estimates of the specific cooling power <i>Q</i>_C as a function of the frequency of the AMF showed that the highest value of <i>Q</i>_C at <i>f</i> = 20 Hz in a magnetic field of 12 kOe is 26.3 W g⁻¹ and is observed for the composition with <i>x</i> = 0.1. This value is higher than that of Gd, for which, under the same conditions, <i>Q</i>_C = 21.6 W g⁻¹. All the samples studied show stability of the value of Δ<i>T</i>_ad without any sign of deterioration of the effect up to 60,000 cycles of switching on/off of the magnetic field of 12 kOe. The discovered frequency and cyclic stability of <i>ΔT</i>_<i>ad</i> of the studied samples increase their prospects for application in magnetic cooling technology.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"4074 - 4085"},"PeriodicalIF":9.6,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing the mechanism of significant enhancement in interfacial thermal transport in silicon-based ceramic crystalline/amorphous matrix composite phase change materials","authors":"Ling-Yue Li,&nbsp;Lin Qiu,&nbsp;Ning Cao,&nbsp;Lei Xu,&nbsp;Li-Zhong Yang,&nbsp;Jie Lin,&nbsp;Yan-Hui Feng","doi":"10.1007/s12598-025-03301-2","DOIUrl":"10.1007/s12598-025-03301-2","url":null,"abstract":"<p>Investigating thermal transport mechanisms at the interface between phase change materials (PCMs) and high thermally conductive fillers has become increasingly significant in developing phase change energy storage technologies. This study explores the interfacial thermal transport between a representative PCM, erythritol, and various fillers, including crystalline (SiC, Si₃N₄) and amorphous (SiO₂) nanoparticles, using molecular dynamics (MD) simulations. Additionally, time-domain thermoreflectance (TDTR) experiments were performed to quantify the interfacial thermal conductance between erythritol and the three types of fillers, yielding values of 50.1, 40.0, and 25.6 MW m^–2 K⁻¹. These results align well with the trends observed in the simulations. Furthermore, the underlying mechanisms of interfacial heat transfer were analyzed by examining the phonon density of states, overlap energy, and interaction energy. This research provides innovative insights into nanoscale interfacial thermal transport in composite PCMs. This could lead to significant advancements in thermal management technologies, particularly in developing more efficient thermal energy storage systems.</p>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"4107 - 4118"},"PeriodicalIF":9.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mitigating the pathway competition between moisture and gas via hierarchical fibrous paper for humidity-adaptive fuel cells","authors":"Peng He,&nbsp;Lei Wang,&nbsp;Hao Tang,&nbsp;Quanbo Huang,&nbsp;Guodong Ren,&nbsp;Ruwei Chen,&nbsp;Xiaohui Wang","doi":"10.1007/s12598-025-03271-5","DOIUrl":"10.1007/s12598-025-03271-5","url":null,"abstract":"<div><p>Proton exchange membrane fuel cell (PEMFC) is a promising clean energy source, but its performance and stability are vulnerable to the negative effects of humidity conditions. The gas diffusion substrate (GDS) plays a pivotal role in regulating the moisture and gas transport. The single pore structure of traditionally designed GDS often leads to the pathway competition between moisture and gas, which effects the efficiency of fuel cells. In this study, we report on a hierarchical fibrous paper with tunable hierarchical pores for a sustainable GDS. This design offers gas permeability under wet conditions, by separating the gas pathway from the moisture pathway, thus mitigating their pathway competition. In addition, this paper forms a multi-scale scaffold that absorbs moisture under high humidity conditions and releases it under dry conditions. It is allowed to maintain an optimal internal humidity and further enhances the humidity adaptability. Furthermore, the carbon footprint is only 15.97%, significantly lower than commercial alternatives. This feature makes it a sustainable solution to stabilize PEMFCs under diverse humidity conditions. </p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3234 - 3243"},"PeriodicalIF":9.6,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Near-infrared self-powered RuS2xSe2−2x alloy photodetector via chemical vapor deposition RuSe2 and post-sulfurization process","authors":"Jaehyeok Kim,&nbsp;Hwi Yoon,&nbsp;Inkyu Sohn,&nbsp;Tatsuya Nakazawa,&nbsp;Sangyoon Lee,&nbsp;Donghyun Kim,&nbsp;Yusuke Ohshima,&nbsp;Hiroki Sato,&nbsp;Seunggi Seo,&nbsp;Sojeong Eom,&nbsp;Seung-Min Chung,&nbsp;Hyungjun Kim","doi":"10.1007/s12598-024-03152-3","DOIUrl":"10.1007/s12598-024-03152-3","url":null,"abstract":"<div><p>Ruthenium (Ru)-based chalcogenide (S, Se) is a promising material in various fields, such as optics, photoelectrodes, and electrocatalysis, owing to its suitable bandgap for generating charge carriers under light illumination ranging from visible to near-infrared (NIR) and its high absorption coefficient. In this study, we report the synthesis of RuSe₂ thin films by chemical vapor deposition (CVD) with a bandgap matching the NIR region at 0.52 eV. Further, we demonstrated RuS_2<i>x</i>Se_{2−2<i>x</i>} alloy films using the post-sulfurization process after CVD RuSe₂ with a tunable bandgap from 0.52 to 1.39 eV depending on sulfur composition. Remarkably, RuS_2<i>x</i>Se_{2−2<i>x</i>} alloy film metal–semiconductor–metal (MSM) photodetector sulfurized at 500 °C, with a 0.75 eV bandgap, exhibits enhanced broad absorption across NIR spectral ranges, suppressed dark current and high photoresponsivity in NIR wavelengths range even at zero-bias. We believe the bandgap-tunable RuS_2<i>x</i>Se_{2−2<i>x</i>} thin film through an efficient deposition method could be suitable for various optoelectronic applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"4050 - 4060"},"PeriodicalIF":9.6,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flotation properties and separation mechanism of ammonium dodecylsulfate on lepidolite minerals","authors":"Xin Hu,&nbsp;Xian-Ping Luo,&nbsp;Zi-Shuai Liu,&nbsp;He-Peng Zhou,&nbsp;Xue-Kun Tang,&nbsp;Hui-Yang Lin,&nbsp;Lu-Shuai Yao,&nbsp;Wan-Ting Bai","doi":"10.1007/s12598-025-03246-6","DOIUrl":"10.1007/s12598-025-03246-6","url":null,"abstract":"<div><p>Lepidolite, feldspar, and quartz are silicate minerals with similar chemical properties, complicating their flotation separation. Current collector systems require strong acidic conditions for effective separation but still face challenges related to low separation efficiency and recovery rates. This study proposed a novel collector, ammonium dodecylsulfate (ALS), to selectively extract lepidolite from feldspar and quartz using highly selective flotation methods. Microflotation experiments showed that ALS significantly outperforms other collectors in collecting lepidolite compared to feldspar and quartz. At pH 7, lepidolite recovery reached 95%, while flotation recoveries for both feldspar and quartz were below 10%. Mixed pure mineral flotation tests revealed that at pH 7 and ALS concentration of 2.5 × 10^–4 mol·L⁻¹, the Li₂O content in the concentrate was 4.21%, with a recovery rate of 95.01%. Separation efficiency and Gaudin selectivity index values were recorded. Solution chemical analyses showed that at pH 7, ALS completely ionizes into NH₄⁺ and CH₃(CH₂)₁₁OSO₃⁻. Various analytical techniques, including high-speed photography imaging, contact angle measurements, Fourier transform infrared spectroscopy, zeta potential analysis, and X-ray photoelectron spectroscopy, confirmed that the anion CH₃(CH₂)₁₁OSO₃⁻ adsorbs chemically onto aluminum sites on lepidolite's surface, while the cation NH₄⁺ binds through electrostatic interactions and hydrogen bonding. The combined adsorption of these ions on lepidolite's surface enhanced its hydrophobicity. In contrast, ALS showed minimal adsorption on feldspar and quartz surfaces, which remained hydrophilic, enabling efficient selective flotation separation of lepidolite from both feldspar and quartz.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 4","pages":"2791 - 2804"},"PeriodicalIF":9.6,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Large energy gap between singlet and triplet states is no longer a problem: intermediate charge transfer state boosts overall quantum yield up to 67% in Eu3+ complexes","authors":"Nane A. Avagyan,&nbsp;Pavel S. Lemport,&nbsp;Trofim A. Polikovskiy,&nbsp;Alisia V. Tsorieva,&nbsp;Mikhail T. Metlin,&nbsp;Ilya V. Taydakov,&nbsp;Roman V. Zonov,&nbsp;Konstantin A. Lyssenko,&nbsp;Mikhail F. Vokuev,&nbsp;Igor A. Rodin,&nbsp;Vitaly A. Roznyatovsky,&nbsp;Yuri A. Ustynyuk,&nbsp;Valentine G. Nenajdenko","doi":"10.1007/s12598-024-03210-w","DOIUrl":"10.1007/s12598-024-03210-w","url":null,"abstract":"<div><p>New complexes of europium, gadolinium and terbium trinitrates with N,N,N’,N’-tetraalkyl substituted phenanthroline diamides were synthesized. The europium complexes were found to be highly efficient in terms of luminescence properties (max quantum yield = 67%). The significant influence of the structure of the ligands on the photophysical characteristics of their complexes was demonstrated. Thus, the incorporation of various substituents (Cl, F, O, OH) into the phenanthroline core causes significant changes in the luminescent behavior of the obtained coordination compounds. We observed significant differences in the energy gap between the excited states <i>S</i>₁ and <i>T</i>₁, especially in the <b>L2H</b>·Eu(NO₃)₃ and <b>L2FOH</b>·Eu(NO₃)₃ complexes, which both demonstrated high overall quantum yields (66% and 67%, respectively). Study of the diffuse reflection spectra of terbium complexes suggested the phenomenon of charge transfer, potentially ligand-to-ligand (LLCT) or intra-ligand (ILCT), rather than ligand-to-metal charge transfer (LMCT). These results highlight the complicated relationship between ligand structure, energy transfer mechanisms and quantum yield in rare earth element complexes, shedding light on ways to optimize their luminescent properties.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"4279 - 4293"},"PeriodicalIF":9.6,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure optimization of cold sprayed M2052 alloy using post-processing heat treatment for tailoring damping capacity","authors":"Long Chen,&nbsp;Li-Ying Sun,&nbsp;Pu-Guang Ji,&nbsp;Ying-Chun Xie,&nbsp;Chao-Yue Chen,&nbsp;Sergey V. Rogozhkin,&nbsp;Nasib A. Iskandarov,&nbsp;Nikita Yurchenko,&nbsp;Vasili Rubanik,&nbsp;Fu-Xing Yin","doi":"10.1007/s12598-025-03235-9","DOIUrl":"10.1007/s12598-025-03235-9","url":null,"abstract":"<div><p>Cold spray (CS) has been attracting an increasing interest due to low heat input, which avoids grain growth and high thermal stress. This feature is beneficial for high damping Mn-Cu alloy through limiting oxidation and formation of hot cracks. However, high dislocation density formed because of extensive plastic deformation, pores, and cracks result in the low damping capacity in the as-deposited Mn-Cu alloy. New strategy was introduced for improving damping capacity in cold sprayed Mn-20Cu-5Ni-2Fe (M2052 at%) alloy with different particle sizes (below 25 μm and between 15 and 53 μm). The 15–53 μm powder has high yield strength and plastic deformation resistance, which leads to a large number of defects and non-bonded interface between powders due to insufficient plastic deformation. Ageing treatment at 420 °C leads to spinodal decomposition of the fcc-austenite, and the formation of Mn-rich matrix and Cu-rich nanoscale network structure is found. Under the same ageing conditions, the spinodal decomposition level of the fcc-austenite in the CS M2052 alloy with the particles of 15–53 μm is higher than that with the particles of &lt; 25 μm, which results from the difference in the grain size. As a result, the damping capacity in the CS M2052 samples with particle size of 15–53 μm is higher compared with the CS M2052 sample with particle size of &lt; 25 μm. There is a significant increase in the damping capacity in the CS M2052 samples after HIP treatment, which can effectively reduce the internal defects and improve the bonding properties between powders.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3531 - 3546"},"PeriodicalIF":9.6,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}