Journal of Alloys and Compounds最新文献

{"title":"Grinding-assisted calcination synthesis of S-scheme In2O3/S-doped g-C3N4 heterojunctions for enhanced photocatalytic antibiotic removal","authors":"Yunyuan Dong, Xiaoheng Liu, Yiwen Wang, Qifu Zheng, Jianming Liao, Xiaobin Chen, Shen Wang, Guanqing Zhang, Xiang Miao, Yuan Wei, Min Zhang","doi":"10.1016/j.jallcom.2026.191572","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191572","url":null,"abstract":"The ubiquitous accumulation of antibiotic residues in aquatic environments poses a severe threat, necessitating efficient and sustainable remediation technologies like photocatalytic oxidation. To overcome the rapid charge recombination of single-component photocatalysts, we constructed a novel S-scheme heterojunction comprising In<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> nanoparticles anchored on S-doped g-C<ce:inf loc=\"post\">3</ce:inf>N<ce:inf loc=\"post\">4</ce:inf> (In<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf>/SCN) via a facile grinding-assisted calcination strategy. This specific architecture was selected because the perfectly matched energy band alignment between the highly reductive S-doped g-C<ce:inf loc=\"post\">3</ce:inf>N<ce:inf loc=\"post\">4</ce:inf> and highly oxidative In<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> provides a strong thermodynamic driving force for spatial charge separation while preserving their maximum redox potentials. Under visible light irradiation, the optimized In<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf>/SCN composite exhibited broad-spectrum photocatalytic activity, achieving outstanding degradation efficiencies of 92% for tetracycline (TC) and 75% for nitrofurantoin (NTF) within 120 min, alongside excellent operational stability over five consecutive cycles. The experimental characterizations and density functional theory (DFT) calculations revealed that the synergistic effect of S-doping and the S-scheme heterojunction significantly facilitated the rapid spatial separation of photogenerated electron-hole pairs. Driven by a strong built-in internal electric field, the S-scheme charge transfer pathway successfully preserved the maximized redox potentials of the carriers. Furthermore, free radical trapping and electron spin resonance (ESR) analyses confirmed that •OH acted as the dominant reactive species in the degradation process. Finally, the deep mineralization pathways of TC and NTF were systematically elucidated via LC-MS analysis. This work provides deep insights into the rational design of highly efficient S-scheme heterojunctions for complex pharmaceutical wastewater remediation.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"36 1","pages":"191572"},"PeriodicalIF":6.2,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic engineering of spinel CoxNi1-xFe2O4 as a high-performance bifunctional electrocatalyst for efficient oxygen and urea oxidation reactions","authors":"Cheenepalli Nagarjuna, Dhanalakshmi Radhalayam, Murali Bissannagari, Kurugundla Gopi Krishna, Saikat Shyamal, Wenjun Lu, BinBin He","doi":"10.1016/j.jallcom.2026.191581","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191581","url":null,"abstract":"Developing sustainable hydrogen production requires the design of cost-effective and efficient bifunctional electrocatalysts for both the urea oxidation reaction (UOR) and oxygen evolution reaction (OER). In this study, a series of spinel Co<ce:inf loc=\"post\">x</ce:inf>Ni<ce:inf loc=\"post\">1-x</ce:inf>Fe<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">4</ce:inf> (x = 0.3, 0.5, and 0.7) compounds were synthesized using a simple co-precipitation method followed by thermal annealing. Structural analysis confirmed the formation of a highly crystalline cubic spinel phase with a uniform elemental distribution. Among the investigated compositions, Co<ce:inf loc=\"post\">0.5</ce:inf>Ni<ce:inf loc=\"post\">0.5</ce:inf>Fe<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">4</ce:inf> exhibited a optimized electrocatalytic performance, requiring OER overpotentials of 250 and 290 mV and UOR potentials of 1.03 and 1.08 V versus RHE to achieve current densities of 50 and 100 mA cm⁻<ce:sup loc=\"post\">2</ce:sup>, respectively. The synergistic interaction among Co, Ni, and Fe ions optimizes the electronic structure, promotes redox transitions, and increases the number of accessible active sites, thereby enhancing catalytic activity. Furthermore, Co<ce:inf loc=\"post\">0.5</ce:inf>Ni<ce:inf loc=\"post\">0.5</ce:inf>Fe<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">4</ce:inf> demonstrated superior long-term stability, the highest electrochemically active surface area (ECSA~132.5 cm<ce:sup loc=\"post\">2</ce:sup>), and the lowest charge transfer resistance (R<ce:inf loc=\"post\">ct</ce:inf> ~0.49) among all samples. This work proposes Co<ce:inf loc=\"post\">0.5</ce:inf>Ni<ce:inf loc=\"post\">0.5</ce:inf>Fe<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">4</ce:inf> as a promising bifunctional electrocatalyst for effective energy conversion and wastewater-assisted hydrogen production, emphasizing the significance of compositional adjustment in multimetallic spinel oxides.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"27 1","pages":"191581"},"PeriodicalIF":6.2,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly Conductive and Conformal InN by Plasma-Enhanced Atomic Layer Deposition on amorphous SiO2 substrate Using a Liquid Heteroleptic Indium Precursor and NH3 Plasma","authors":"Yejun Kim, Sang Bok Kim, Chaehyun Park, Minseok Kyung, Junghwan Kim, Soo-Hyun Kim","doi":"10.1016/j.jallcom.2026.191562","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191562","url":null,"abstract":"Indium nitride (InN) thin films were deposited by plasma-enhanced atomic layer deposition (PEALD) using (<ce:italic>N</ce:italic>,<ce:italic>N′</ce:italic>-di-tert-butylacetimidamido)dimethylindium (DBADMIn) and NH<ce:inf loc=\"post\">3</ce:inf> plasma. By systematically tuning the plasma chemistry, pulse timing, and deposition temperature, we identified a self-limiting growth regime and established a clear ALD window between 175 and 275 °C, where the growth per cycle remained nearly constant at ≈ 0.56<ce:hsp sp=\"0.25\"></ce:hsp>Å/cycle. Within this window, the films were dense (6.20<ce:hsp sp=\"0.25\"></ce:hsp>g/cm<ce:sup loc=\"post\">3</ce:sup>) with smooth surfaces and a polycrystalline wurtzite structure, showing preferential contributions from the (100), (002), and (101) reflections. Conformal deposition was confirmed on patterned features, yielding step coverages of ~91% (sidewall/top) and ~86% (bottom/top) for 100-nm-wide trenches with an aspect ratio of 2.5. Combined Rutherford backscattering spectrometry (RBS) and time-of-flight elastic recoil detection (ToF-ERD) analyses indicated an In-rich average composition (In:N ≈ 1.47) with residual O and H contents. XPS and air-exposure-dependent sheet-resistance analyses suggest that the oxygen contribution is associated not only with possible donor-type O incorporation but also with native surface oxidation and/or minor amorphous InON, InO<ce:inf loc=\"post\">x</ce:inf> phases. Hall measurements revealed degenerate n-type transport with n ≈ 1 × 10<ce:sup loc=\"post\">21<ce:hsp sp=\"0.25\"></ce:hsp></ce:sup>cm<ce:sup loc=\"post\">–3</ce:sup>, μ ≈ 5.4 cm<ce:sup loc=\"post\">2</ce:sup>/V·s, and ρ ≈ 1000 μΩ·cm, while optical spectra exhibited an apparent band gap of ≈ 2.1<ce:hsp sp=\"0.25\"></ce:hsp>eV consistent with a Moss–Burstein shift. Overall, this work demonstrates a reproducible PEALD route to conductive and conformal InN on thermally grown amorphous SiO<ce:inf loc=\"post\">2</ce:inf> using a liquid, thermally stable indium precursor, and highlights plasma chemistry as a key handle for tuning phase formation and electrical properties.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"244 1","pages":"191562"},"PeriodicalIF":6.2,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MnCo2S4/SnIn3S6.5 S-Scheme Heterojunction for selective photocatalytic oxidation of 5-Hydroxymethylfurfural to 2, 5-diformylfuran in water","authors":"Wenhua Xue, Xumin Li, DongYi Li, Wei Sun, Jun Zhao, Jonathan W.C. Wong, Wei Zhang, Enzhou Liu","doi":"10.1016/j.jallcom.2026.191534","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191534","url":null,"abstract":"Solar-driven photocatalytic conversion of 5‑hydroxymethylfurfural (HMF) represents a crucial route for renewable resources utilization. However, current photocatalysts generally suffer from poor product selectivity. Herein, we construct an MnCo<ce:inf loc=\"post\">2</ce:inf>S<ce:inf loc=\"post\">4</ce:inf>/SnIn<ce:inf loc=\"post\">3</ce:inf>S<ce:inf loc=\"post\">6.5</ce:inf> (MCS/SIS3) S‑scheme heterojunction for the selective oxidation of HMF to 2,5‑diformylfuran (DFF) in water. The S‑scheme charge transfer pathway not only suppresses carrier recombination via the built‑in electric field, but also preserves the strong reducing and oxidizing capabilities of the charge carriers. Moreover, the heterojunction weakens the hydrogen‑bonding network of interfacial water on the catalyst surface, which increases the diffusion coefficient of HMF and thus accelerates substrate mass transfer. The synergistic effect of these two factors endows 3%MCS/SIS3 improved photocatalytic activity. Under blue‑light irradiation, the optimal 3%MCS/SIS3 composite achieves an HMF conversion of 85.6% and a DFF selectivity of 90.4% within 3<ce:hsp sp=\"0.25\"></ce:hsp>hours. Photogenerated holes and singlet oxygen are identified as the primary reactive species. Holes directly drive the bond cleavage of the hydroxymethyl group to form aldehyde group, while singlet oxygen acts as a proton acceptor. This work reports the application of an MnCo<ce:inf loc=\"post\">2</ce:inf>S<ce:inf loc=\"post\">4</ce:inf>‑based S‑scheme heterojunction in photocatalytic biomass conversion, offering a new avenue for the selective production of DFF under green aqueous conditions.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"31 1","pages":"191534"},"PeriodicalIF":6.2,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aluminium-Containing High-Entropy Alloys: From Thermodynamic Design to Service Performance: A Critical Review","authors":"Ifeyinwa Glory Ibekwe, Samuel Ranti Oke, Henry Kayode Talabi, Saliu Ojo Seidu, Tolulope Akinkunmi Adewole, Fatai Olufemi Aramide","doi":"10.1016/j.jallcom.2026.191559","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191559","url":null,"abstract":"Aluminium-containing high-entropy alloys (Al-HEAs) are compositionally complex alloys in which Al is a principal or deliberately varied constituent rather than a conventional solvent or base element. This review develops a grounded design-to-service framework that links Al-controlled chemical interactions and phase selection to processing history, microstructural architecture, defects, and degradation under defined exposure conditions. Empirical descriptors are evaluated as screening variables rather than universal phase rules, and their limitations are assessed against CALPHAD, first-principles modelling, machine learning, and experimental validation. Evidence from casting, mechanical alloying and sintering, and additive manufacturing shows that increasing Al commonly promotes BCC/B2 stability and chemical ordering; however, transition thresholds and properties remain conditional on co-element chemistry, thermal history, segregation, defect population, and phase-resolution limits. Strength and hardness are therefore treated as baseline attributes, whereas wear, oxidation, corrosion/tribocorrosion, fatigue, and creep are analysed through damage initiation, near-surface evolution, and mechanism transitions. The principal barriers to deployment are uncertainty in ordered-phase prediction, incomplete process–structure reproducibility, limited long-duration degradation datasets, and insufficient component-level qualification. The resulting uncertainty-aware framework identifies transferable relationships, explains apparently conflicting reports, and defines the evidence required for application-specific Al-HEA design.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"8 1","pages":"191559"},"PeriodicalIF":6.2,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional group-induced structural evolution coupled with ion etching engineering for high-performance electromagnetic wave absorption","authors":"Jingkai Jia, Zhuye Xia, Lvtong Duan, Baoliang Zhang, Kailun Ma, Jintang Zhou","doi":"10.1016/j.jallcom.2026.191543","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191543","url":null,"abstract":"As the electronic information industry develops rapidly, the electromagnetic pollution has become increasingly severe, posing a critical challenge that urgently needs to be addressed in both the defense and civilian fields. In recent years, etching processes have attracted widespread attention in the field of electromagnetic wave absorption due to their excellent structural controllability. However, most existing research only focuses on the individual effects of etching on morphology and composition; there remains a lack of systematic understanding of the evolution of etching pathways across different dimensions and few investigations have explored their synergistic effects on defect evolution and electromagnetic response. This work proposes a synergistic strategy combining functional group-induced assembly and gradient-concentration ion etching, the results indicate that etching on two-dimensional nanosheets exhibits a better effect on improving electromagnetic wave absorption performance, this superiority arises from the continuous in-plane conductive network and higher graphitization degree of two-dimensional nanosheets, together with optimized N configuration and abundant C/Ni₃Fe interfaces, which synergistically enhance conductive and polarization losses while maintaining favorable impedance matching behavior. In particular, sample 2N-0.5 (25% filling ratio) achieves an effective absorption bandwidth (EAB) of 5.69 GHz at a thickness of 2.00 mm. Radar cross-section (RCS) simulations further verify its excellent practical application potential. This paper reveals the patterns of structural evolution induced by etching in different dimensions and their impact on electromagnetic wave absorption properties, thereby providing new theoretical guidance for the design and optimization of etching processes.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"28 1","pages":"191543"},"PeriodicalIF":6.2,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phase identification and alloy composition of historic Indian bronze gongs and cymbals by SR-XRD and PIXE","authors":"C. Delomosne, E. Bérard, S. Réguer, D. Roze, B. Mille, M. Jossic, R. Caussé, T. Baudin, C. Berdin, V. Etgens","doi":"10.1016/j.jallcom.2026.191476","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191476","url":null,"abstract":"The aim of this paper is to better understand the manufacturing process of high tin bronze gongs and cymbals by analyzing a corpus of museum musical instruments using different non destructive and non invasive techniques. Two main factors were taken in account in this study : alloy composition and heat treatments. The particular type of heat treatments performed for the making of high tin bronze gongs and cymbals is water quenching, which produces characteristic martensitic phases. The first factor, alloy composition, was investigated using Particle Induced X-ray Emission (PIXE) at the NewAGLAE particle accelerator. The second factor, the presence of quenching, was studied using Synchrotron Radiation X Ray Diffraction (SR-XRD) at the SOLEIL Synchrotron, at the DiffAbs beamline. This analysis allows for the identification of the metastable crystalline phases that act as a marker for the use of quenching in the manufacture of musical instruments. The heritage objects were investigated alongside an ensemble of lab-produced model samples that allow the use of other destructive characterization techniques, such as optical metallography. By processing the diffraction data using several methods, including Principal Component Analysis, the identification of martensitic phases in the musical instruments was achieved. Microstructural parameters were also discussed using azimuthal scanning by processing the 2D diffraction images and the variations in the diffraction intensity along the azimuthal direction. These results enable a better understanding of the use of high tin bronze alloys for gongs and cymbals.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"9 1","pages":"191476"},"PeriodicalIF":6.2,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tunable multicomponent manganese-based medium- to high-entropy oxides for electrocatalysis and supercapacitors","authors":"R Shahishnu Rahul, P Adarsh, Sethumathavan Vadivel, S. Sarmila, P. Sujita, Takahiro Kondo","doi":"10.1016/j.jallcom.2026.191531","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191531","url":null,"abstract":"The rational design of multicomponent transition-metal oxides with tunable composition and architecture is essential for advancing electrocatalysis and energy storage technologies. In this study, a series of medium- to multi-metallic high-entropy oxides (Mn, Fe, Co, Ni, and Cu) were successfully synthesized via a hydrogen-bonded organic framework (HOF)-templated approach using 1,3,5-benzenetricarboxylic acid (BTC) and melamine. The structural features and chemical states of the synthesized materials were comprehensively analyzed using X-ray diffraction, FT-IR, FESEM, TEM, EDS, and XPS. Systematic electrochemical investigations revealed that the trimetallic composition Mn<ce:inf loc=\"post\">0.8</ce:inf>Fe<ce:inf loc=\"post\">0.1</ce:inf>Co<ce:inf loc=\"post\">0.1</ce:inf>, denoted as M3H, demonstrates superior oxygen evolution reaction (OER) activity, attributed to synergistic electronic interactions and enhanced exposure of electrochemically active sites. In contrast, the bulk multi-metallic oxide (Mn<ce:inf loc=\"post\">0.8</ce:inf>, Fe<ce:inf loc=\"post\">0.05</ce:inf>, Co<ce:inf loc=\"post\">0.05</ce:inf>, Ni<ce:inf loc=\"post\">0.05</ce:inf>, Cu<ce:inf loc=\"post\">0.05</ce:inf> (M5B)) exhibits superior supercapacitor performance owing to its improved electrical conductivity and multiple redox-active centers. Additionally, a symmetric supercapacitor (SC) device was constructed, which exhibited remarkable cycling stability and high-rate capability. This work highlights the critical roles of compositional tuning and structural engineering in dictating electrochemical performance, thereby providing a viable strategy for developing multifunctional energy materials.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"8 1","pages":"191531"},"PeriodicalIF":6.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Interplay of intermetallic precipitation and nano Y2O3 dispersion on microstructure evolution and strengthening in hydrogen sintered Mo-Ni-Si-Co alloys” [J. Alloys Compd. 1079 (2026) 189924]","authors":"Sambit Swain, Sampada Mishra, Anshuman Patra, Md Murtuja Husain, Mayadhar Debata","doi":"10.1016/j.jallcom.2026.191513","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191513","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"52 1","pages":"191513"},"PeriodicalIF":6.2,"publicationDate":"2026-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-loss and thermally conductive bismaleimide-triazine composites enabled by modified boron nitride and quartz fiber fabric for high-frequency electronic packaging","authors":"Hao Wang, Yuxin He, Kang Luo, Enzhu Li, Bin Tang, Ying Yuan","doi":"10.1016/j.jallcom.2026.191505","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191505","url":null,"abstract":"For high-frequency electronic packaging systems with increasing signal-transmission speed and chip power density, the dielectric loss (<ce:italic>D</ce:italic><ce:inf loc=\"post\">f</ce:inf>), heat-spreading efficiency, and dielectric temperature stability of substrate materials have become critical factors governing reliable device operation. In this work, bismaleimide-triazine (BT)-based composite substrates were constructed by integrating phenylamino silane-modified boron nitride (<ce:italic>m</ce:italic>-BN) platelets with a quartz fiber fabric (QFF) reinforcing framework. The developed synergistic hydroxylation-silane coupling strategy preserved the large-sized platelet structure of BN while improving filler/resin interfacial bonding, thereby facilitating continuous thermal transport pathways and reducing interfacial defects. The optimized <ce:italic>m</ce:italic>-BN<ce:inf loc=\"post\">72</ce:inf> composite achieved a low <ce:italic>D</ce:italic><ce:inf loc=\"post\">f</ce:inf> of 0.0019 at 10 GHz and a through-plane thermal conductivity of 2.44 W m<ce:sup loc=\"post\">−1</ce:sup> K<ce:sup loc=\"post\">−1</ce:sup>. Simultaneously, the sample maintained good dielectric temperature stability from −40–140 °C, with a temperature coefficient of dielectric constant of only 10.3 ppm/°C. In addition, <ce:italic>m</ce:italic>-BN<ce:inf loc=\"post\">72</ce:inf> exhibited a high glass transition temperature of 267.2 °C and a low X-axis coefficient of thermal expansion (5.0 ppm/°C). Finite element simulation and power device heat-dissipation tests further demonstrated that <ce:italic>m</ce:italic>-BN<ce:inf loc=\"post\">72</ce:inf> effectively mitigated local heat accumulation and reduced the device operating temperature. This work provides a practical structural optimization strategy for microwave and highly integrated electronic packaging substrates.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"7 1","pages":"191505"},"PeriodicalIF":6.2,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}