Journal of Materials Science最新文献_第6页

Nanoscratching behaviour and deformation mechanisms of polycrystalline CuCrCoFeNi high-entropy alloy coatings on Cu substrates: a molecular dynamics study Cu基体上多晶CuCrCoFeNi高熵合金涂层的纳米刮擦行为和变形机制：分子动力学研究

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-24 DOI: 10.1007/s10853-026-13785-7

Thanh-Nga Trinh, Anh-Son Tran, Anh-Tuan Nguyen, Van-Tuan Chu, Thi-Quy Vu

引用次数: 0

Synergistic mechanism of Mn–Cr in MnOx–CrOx binary mixed oxide catalysts for catalytic oxidation of toluene Mn-Cr在MnOx-CrOx二元混合氧化物催化剂中催化氧化甲苯的协同机理

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-24 DOI: 10.1007/s10853-026-13809-2

Dong Ye, Xiaoxiang Wang, Jiahui Liu, Siyi Fan, Kai Zhu, Ruitang Guo

{"title":"Synergistic mechanism of Mn–Cr in MnOx–CrOx binary mixed oxide catalysts for catalytic oxidation of toluene","authors":"Dong Ye, Xiaoxiang Wang, Jiahui Liu, Siyi Fan, Kai Zhu, Ruitang Guo","doi":"10.1007/s10853-026-13809-2","DOIUrl":"10.1007/s10853-026-13809-2","url":null,"abstract":"<div>MnOx-based catalysts have garnered considerable attention for the catalytic oxidation of toluene. In this study, the synergistic effects between Mn and Cr species in MnOx–CrOx binary mixed oxides were systematically investigated. While pristine MnOx and CrOx exhibited limited toluene oxidation activity, achieving > 90% conversion only above 280 °C, the integration of MnOx and CrOx resulted in a marked improvement in catalytic performance. At a Mn/Cr molar ratio of 3/1, the catalyst demonstrated optimal activity, delivering 90% toluene conversion at 247 °C under a gas hourly space velocity (GHSV) of 90000 mL g−1 h−1 and a comparatively low apparent activation energy (Ea) of 27.6 kJ/mol. This performance improvement can be attributed to a combination of favorable physicochemical modifications, including an enlarged specific surface area, a well-developed porous architecture, an increased toluene adsorption capacity, an elevated concentration of high-valent metal cations, and an abundance of chemisorbed oxygen. Furthermore, the combination of MnOx and CrOx facilitated the formation and consumption of intermediates like benzoates, thereby accelerating the oxidative degradation pathway. Importantly, the MnOx–CrOx catalyst exhibited robust long-term stability and reasonable tolerance toward H2O and SO2, underscoring its potential for practical applications in engineering.</div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"34747 - 34764"},"PeriodicalIF":4.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149162956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and CO2 reduction performance of BiOCl composite photocatalysts modified with lignin carbon quantum dots 木质素碳量子点改性BiOCl复合光催化剂的制备及其CO2还原性能

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-24 DOI: 10.1007/s10853-026-13581-3

Longjun Li, Yilin Wu, Oxana P. Taran, Fubao Sun, Hong Yan, Yangyang Hu

{"title":"Preparation and CO2 reduction performance of BiOCl composite photocatalysts modified with lignin carbon quantum dots","authors":"Longjun Li, Yilin Wu, Oxana P. Taran, Fubao Sun, Hong Yan, Yangyang Hu","doi":"10.1007/s10853-026-13581-3","DOIUrl":"10.1007/s10853-026-13581-3","url":null,"abstract":"<div>Rapid industrial development has intensified reliance on fossil fuels, leading not only to increased atmospheric carbon dioxide concentrations but also to energy shortages and global warming. Photocatalytic carbon dioxide reduction is widely recognized as an effective strategy to mitigate these issues; however, the application of the photocatalyst BiOCl is limited by its large bandgap and the tendency of photogenerated carriers to recombine. In this study, nitrogen-doped lignin-based carbon quantum dots (NLCQDs) were synthesized via a hydrothermal method using alkaline lignin and ethylenediamine as precursors. Then, NLCQDs were coupled with solvothermally prepared BiOCl to construct BiOCl/NLCQDs-X composite photocatalysts, where X (20, 30, 40 mL) denotes the loading volume of NLCQD solution. Systematic structural characterizations verify the successful fabrication of the composites. It is worth noting that the introduction of NLCQDs hardly changes the crystal phase and morphology of BiOCl, whereas the specific surface area of BiOCl/NLCQDs-30 increases by 8.7523 m2/g relative to pristine BiOCl. Photoelectrochemical measurements reveal that NLCQDs can narrow the band gap of BiOCl, strengthen visible-light harvesting, and accelerate the separation of photogenerated charge carriers by serving as electron trapping sites and charge transport channels. Under simulated visible-light illumination, the optimal BiOCl/NLCQDs-30 sample delivers a CO evolution rate of 14.13 μmol g−1 h−1 for photocatalytic CO2 reduction, which is 4 times that of pure BiOCl. Moreover, the composite displays favorable cycling stability. This work optimizes the charge separation behavior of BiOCl and offers a facile and sustainable strategy for efficient photocatalytic CO2 conversion.</div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 43","pages":"33532 - 33552"},"PeriodicalIF":4.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructural evolution and mechanical properties of Zn–Mg alloys processed by cyclic extrusion–compression 循环挤压-压缩Zn-Mg合金的组织演变与力学性能

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-23 DOI: 10.1007/s10853-026-13817-2

B. Sułkowski, P. Pałka, G. Boczkal, M. Mroczkowski, A. Kula

{"title":"Microstructural evolution and mechanical properties of Zn–Mg alloys processed by cyclic extrusion–compression","authors":"B. Sułkowski, P. Pałka, G. Boczkal, M. Mroczkowski, A. Kula","doi":"10.1007/s10853-026-13817-2","DOIUrl":"10.1007/s10853-026-13817-2","url":null,"abstract":"<div>Zn–Mg alloys are promising candidates for temporary biomedical implants, but their limited strength–ductility balance remains a challenge. In this study, cyclic extrusion–compression (CEC), a severe plastic deformation technique, was applied to high-purity Zn (99.95%) and Zn–Mg alloys containing 0.5 and 1 wt% Mg to investigate the effect of strain accumulation on microstructure and mechanical properties. The materials were processed at room temperature for up to 16 cycles (ε ≈ 6.72). Microstructural evolution and texture development were characterized by electron backscatter diffraction and X-ray diffraction, and correlated with tensile properties measured at room temperature and a strain rate of 10−3 s−1. The tensile response exhibits a non-monotonic dependence on number of CEC cycles. Strength increases during the initial stages of deformation, reaches a maximum after 4 cycles, decreases at intermediate strains, and increases again at higher strains. In contrast, ductility improves progressively with increasing number of deformation. As a result, an enhanced strength–ductility balance is obtained at intermediate deformation levels. Increasing Mg content shifts the strength maximum to higher strains and leads to higher ductility. The non-monotonic strength evolution is attributed to the competition between grain refinement and strain-induced grain coarsening and is associated with the concurrent operation of dynamic recrystallization and discontinuous localized grain growth during CEC processing. These results demonstrate that CEC processing can be used to achieve the good mechanical properties of Zn–Mg alloys through controlled microstructural evolution and improve their strength–ductility balance.</div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 43","pages":"34293 - 34314"},"PeriodicalIF":4.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanism of Sm-doping induced dipolar relaxation and natural resonance on regulating electromagnetic loss characteristics of nickel ferrites 钐掺杂诱导的偶极弛豫和自然共振调节镍铁氧体电磁损耗特性的机理

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-23 DOI: 10.1007/s10853-026-13777-7

Zheng Li, Yutong Li, Shuwei Liu, Wei Ding, Ganhong Zheng, Yongqing Ma, Zhigao Sheng

{"title":"Mechanism of Sm-doping induced dipolar relaxation and natural resonance on regulating electromagnetic loss characteristics of nickel ferrites","authors":"Zheng Li, Yutong Li, Shuwei Liu, Wei Ding, Ganhong Zheng, Yongqing Ma, Zhigao Sheng","doi":"10.1007/s10853-026-13777-7","DOIUrl":"10.1007/s10853-026-13777-7","url":null,"abstract":"<div>NiFe2-xSmxO4 (x = 0, 0.02, 0.04, and 0.06) nanoparticles were synthesized via a high-temperature organic-phase thermal decomposition method, and their electromagnetic parameters and microwave absorption (MA) properties were systematically investigated in the 2.0–18.0 GHz frequency range. Sm3+ substitution provides an effective strategy to regulate lattice distortion, defect-related polarization, and magnetic resonance behavior, thereby improving impedance matching and electromagnetic attenuation in nickel ferrites. With increasing Sm3+ content, the enhanced lattice distortion induced by the ionic-radius mismatch between Sm3+ (0.96 Å) and Fe3+ (0.64 Å) promotes defect-associated dipolar polarization and dielectric relaxation. Meanwhile, Sm3+ incorporation may modify the local magnetic environment and spin–orbit-related interactions, thereby regulating magnetocrystalline anisotropy and natural-resonance loss. Among the synthesized samples, NiFe1.94Sm0.06O4 (S3) delivered the most outstanding MA performance, achieving a minimum reflection loss (RLmin) of − 38.3 dB at 11.6 GHz with a matching thickness of 4.0 mm, complemented by a broad effective absorption bandwidth (EAB, RL < − 10 dB) of 4.8 GHz. Cole-Cole analysis further elucidated that Sm3+ doping synergistically modulates dielectric relaxation and high-frequency natural resonance, facilitating enhanced electromagnetic energy dissipation. These findings underscore a viable strategy for engineering high-performance ferrite-based absorbers characterized by reduced thickness, lightweight, wide bandwidth, and intense absorption.<h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 43","pages":"33763 - 33778"},"PeriodicalIF":4.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure regulation of Mg–2Zn–0.4Ca magnesium alloy by rolling speed for enhanced biocorrosion resistance 轧制速度对Mg-2Zn-0.4Ca镁合金组织的调节，提高其抗生物腐蚀性能

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-23 DOI: 10.1007/s10853-026-13802-9

Qianyue Han, Youping Sun, Jiangmei He, Kaifei Zhang, Ting Liang, Chengwei He

{"title":"Microstructure regulation of Mg–2Zn–0.4Ca magnesium alloy by rolling speed for enhanced biocorrosion resistance","authors":"Qianyue Han, Youping Sun, Jiangmei He, Kaifei Zhang, Ting Liang, Chengwei He","doi":"10.1007/s10853-026-13802-9","DOIUrl":"10.1007/s10853-026-13802-9","url":null,"abstract":"<div>This study investigated the effects of rolling speed on the microstructure, mechanical properties, and corrosion behavior of Mg–2Zn–0.4Ca magnesium alloy in SBF. The results indicate that rolling speed strongly controls dynamic recrystallization (DRX), grain size, and dislocation density. Although the sample rolled at 768 mm/s showed a relatively high fraction of DRXed grains, retained coarse deformed grains and high GND density caused pronounced microstructural inhomogeneity. At 1024 mm/s, the alloy obtained the finest average grain size (3.51 μm) and the lowest dislocation density, achieving a good balance between grain refinement and defect regulation. Consequently, its ultimate tensile strength (UTS) and elongation (EL) reached 291.39 MPa and 9.9%, respectively. When the rolling speed increased to 1280 mm/s, DRX was suppressed, while the fractions of deformed grains and unindexed regions increased, leading to degraded mechanical properties. Corrosion tests revealed that the 1024 mm/s sample had the lowest corrosion rate, hydrogen evolution volume, and corrosion current density, owing to its homogeneous microstructure, reduced local distortion, and dense, stable corrosion product layer. Overall, moderate rolling speed can synergistically improve microstructural uniformity, mechanical properties, and corrosion resistance, providing guidance for plastic processing of biodegradable Mg alloy sheets.</div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 43","pages":"34240 - 34255"},"PeriodicalIF":4.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular simulation of the adsorption of S-ibuprofen in liquid water in the pentagonal cavity of MIL-101(Cr)-F MIL-101(Cr)-F五角形腔中s -布洛芬在液态水中吸附的分子模拟

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-23 DOI: 10.1007/s10853-026-13822-5

Gerard Grandjean, Gerson E. Valenzuela

引用次数: 0

Microstructure and wear resistance of TiC-reinforced CoCrNi alloy fabricated by laser powder bed fusion 激光粉末床熔合tic增强CoCrNi合金的组织与耐磨性

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-23 DOI: 10.1007/s10853-026-13830-5

Jin Yan, Zeyong Xu, Huiyang Yuan, Yuansong Deng, Chuanqiang Li, Changjian Yan, Yang Yang

{"title":"Microstructure and wear resistance of TiC-reinforced CoCrNi alloy fabricated by laser powder bed fusion","authors":"Jin Yan, Zeyong Xu, Huiyang Yuan, Yuansong Deng, Chuanqiang Li, Changjian Yan, Yang Yang","doi":"10.1007/s10853-026-13830-5","DOIUrl":"10.1007/s10853-026-13830-5","url":null,"abstract":"<div>TiC-reinforced CoCrNi medium-entropy alloy (MEA) composites were fabricated by laser powder bed fusion (LPBF), and their microstructure and wear behavior were investigated. Scanning electron microscopy, electron backscatter diffraction, and transmission electron microscopy were used for microstructural characterization, while Vickers hardness and ball-on-disk tests were used to evaluate mechanical and tribological behavior. TiC addition promoted grain refinement, with the average grain size decreasing from 5.61 to 3.12 μm. The maximum MRD values were 5.27, 8.57, and 7.06 for CoCrNi, CoCrNi(TiC)0.1, and CoCrNi(TiC)0.2, respectively, demonstrating non-monotonic texture evolution. Representative TEM fields revealed nanoscale TiC and Cr23C6 phases preferentially located along grain boundaries. The Vickers hardness increased from 283 to 486 HV, the friction coefficient decreased from approximately 0.47 to 0.24, and the wear volume decreased from approximately 1.38 × 10−3 to 9.67 × 10−5 mm3. The worn-surface morphology evolved from extensive adhesive/delamination damage toward shallower abrasive grooves. Overall, TiC addition modifies the grain structure and phase constitution while substantially improving the hardness and wear response of LPBF-processed CoCrNi composites.</div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"35145 - 35156"},"PeriodicalIF":4.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149162973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interplay between porous structure and tribo-mechanical behavior in porous Si3N4-SiC composites 多孔Si3N4-SiC复合材料多孔结构与摩擦力学行为的相互作用

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-22 DOI: 10.1007/s10853-026-13790-w

Siddharth, Pritam Biswas, Nilrudra Mandal, Siddhartha Roy

{"title":"Interplay between porous structure and tribo-mechanical behavior in porous Si3N4-SiC composites","authors":"Siddharth, Pritam Biswas, Nilrudra Mandal, Siddhartha Roy","doi":"10.1007/s10853-026-13790-w","DOIUrl":"10.1007/s10853-026-13790-w","url":null,"abstract":"<div>Porous Si3N4-SiC composites are promising materials for applications in sectors such as natural gas, nuclear, and aerospace. Nevertheless, their processing typically requires very high temperatures due to strong covalent bonding. In this study, low-temperature fabrication of porous Si3N4-SiC composites was carried out at 1200 °C using H3PO4, which functions as both a binding agent and a pore-forming medium during heating. The effect of H3PO4 content on nano-porosity, mechanical properties (fracture toughness and hardness), and tribological performance was systematically investigated. Dry reciprocating sliding wear tests were conducted against a WC counter body under applied loads of 5 and 15 N. Correlations among porosity (nano and total), H3PO4 content, mechanical properties, and friction-wear response were established. The composition containing 40 vol% of H3PO4 exhibited the most favorable performance, with a hardness of ~ 1.90 GPa, fracture toughness (K1C) of ~ 1.64 MPa√m, wear rate of ~ 1.41 × 10-8 mm3/N-mm, and a coefficient of friction of 0.09. Analysis of the worn surfaces revealed the dominant wear mechanisms governing material removal.</div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"34795 - 34821"},"PeriodicalIF":4.4,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ X-ray investigation of microstructural evolution during tensile deformation of wire arc additive manufactured 304 stainless steel 304不锈钢丝弧添加剂拉伸变形过程中显微组织演变的x射线原位研究

IF 4.4 3区材料科学

Journal of Materials Science Pub Date : 2026-09-22 DOI: 10.1007/s10853-026-13815-4

Hang Dong, Lei Liu, Jiajia Shen, Norbert Schell, Yongcun Li, Yong Wang, João Pedro Oliveira, Zhiyuan Liu

{"title":"In-situ X-ray investigation of microstructural evolution during tensile deformation of wire arc additive manufactured 304 stainless steel","authors":"Hang Dong, Lei Liu, Jiajia Shen, Norbert Schell, Yongcun Li, Yong Wang, João Pedro Oliveira, Zhiyuan Liu","doi":"10.1007/s10853-026-13815-4","DOIUrl":"10.1007/s10853-026-13815-4","url":null,"abstract":"<div>The microstructural evolution of wire arc additive manufactured (WAAMed) 304 stainless steel during tensile deformation was investigated using in-situ high-energy synchrotron X-ray diffraction and electron backscatter diffraction. The deformation process exhibits four distinct stages characterized by a characteristic work hardening rate evolution: a sharp drop upon yielding (Stage II), a plateau-like gradual decrease (Stage III), and a critical secondary hardening beyond 12% strain (Stage IV). This unusual recovery of work hardening is attributed to progressive α′-martensite formation via the γ→ε→α′ transformation sequence, with ε-martensite peaking at ~ 12% volume fraction before transforming to α′-martensite, which stabilizes at ~ 10%. The inherent microstructural heterogeneity of WAAM components regulates the transformation kinetics, leading to asynchronous martensite generation across different regions. Lattice strain analysis reveals load transfer from austenite to hard α′-martensite, while dislocation density remains consistently higher in α′-martensite (~ 1015 m−2) than in austenite and ε-martensite (~ 1014 m−2). Fractography exhibits multi-scale lath morphology corresponding to progressive martensite formation. These findings provide comprehensive insights into the coupled phase transformation and load partitioning mechanisms in WAAMed 304 stainless steel.</div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 43","pages":"34273 - 34292"},"PeriodicalIF":4.4,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0