Materials LettersPub Date : 2026-05-01Epub Date: 2026-02-10DOI: 10.1016/j.matlet.2026.140238
Yongxin Liu, Xiaowei Lei, Zhe Wang, Wenwen Wu, Nan Wang
{"title":"Interdiffusion behavior of NiCrAlYSi coatings in laser additive manufacturing and as-cast single-crystal superalloys","authors":"Yongxin Liu, Xiaowei Lei, Zhe Wang, Wenwen Wu, Nan Wang","doi":"10.1016/j.matlet.2026.140238","DOIUrl":"10.1016/j.matlet.2026.140238","url":null,"abstract":"<div><div>A comparative investigation of the interdiffusion behavior between a NiCrAlYSi coating and two types of substrates was conducted at 1100 °C. The cross-sectional morphologies of the coated samples were characterized by scanning electron microscopy (SEM), and transmission electron microscopy (TEM) was employed for detailed phase analysis. The results reveal that elemental segregation in the laser-clad sample provides the concentration fluctuations necessary for the precipitation of TCP phases, while the diffusion of Cr accelerates the destabilization of the γ/γ' phase structure, leading to the formation of the interdiffusion zone (IDZ) and the secondary reaction zone (SRZ). This study provides valuable insights for optimizing the performance of laser-clad single-crystal superalloys in future applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"410 ","pages":"Article 140238"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials LettersPub Date : 2026-05-01Epub Date: 2026-02-11DOI: 10.1016/j.matlet.2026.140248
Rebecca Sikkema , Igor Zhitomirsky
{"title":"Influence of triethylenetetramine on bioceramic synthesis and mechanisms of electrophoretic deposition of hyaluronic acid and composites","authors":"Rebecca Sikkema , Igor Zhitomirsky","doi":"10.1016/j.matlet.2026.140248","DOIUrl":"10.1016/j.matlet.2026.140248","url":null,"abstract":"<div><div>This investigation was motivated by the need in the development of electrophoretic deposition (EPD) for the fabrication of hyaluronic acid (HyH) films. EPD of HyH was performed from 5 g L<sup>−1</sup> HyH solutions at 20 V during 5 min. The thickness of the film deposited from aqueous solutions was 80 μm, whereas the thickness of the film deposited from mixed water-ethanol solution was 214 μm. EPD offers benefits of fabricating thick, dense, and uniform films. Composite films were deposited by EPD from 5 g L<sup>−1</sup> HyH solution in a 3:4 mixture of water: ethanol with 3 g L<sup>−1</sup> ceramic nanoparticles. Composite films containing calcium phosphates, such as brushite and hydroxyapatite, TiO<sub>2</sub>, hollow halloysite nanotubes, and SiO<sub>2</sub> in the HyH matrix were obtained. HyH promoted suspension stability acting as a dispersing and charging agent. For the first time hydroxyapatite and TiO<sub>2</sub> were synthesized using triethylenetetramine (TH) as an organic alkali for synthesis. TH acted as an alkalizer-capping agent during synthesis and facilitated the formation of smaller fibrous hydroxyapatite particles, compared to particles prepared using NH<sub>4</sub>OH. The small hydroxyapatite particles were converted to brushite in HyH solutions and co-deposited with HyH, whereas larger hydroxyapatite particles showed improved chemical stability and were incorporated into HyH films by EPD. The strategies used for the synthesis of bioceramic nanoparticles using alkalizer-capping agent, fabrication of HyH and composite films open an avenue for the synthesis of other nanomaterials and deposition of other functional polymers and composites. The deposition mechanism was developed and discussed.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"410 ","pages":"Article 140248"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials LettersPub Date : 2026-05-01Epub Date: 2026-02-11DOI: 10.1016/j.matlet.2026.140254
Zhiqiang Wang , Lei Xu , Kang Xu
{"title":"A novel two-dimensional semiconductor SiGeSTe with high piezoelectricity and mobility: A first principles study","authors":"Zhiqiang Wang , Lei Xu , Kang Xu","doi":"10.1016/j.matlet.2026.140254","DOIUrl":"10.1016/j.matlet.2026.140254","url":null,"abstract":"<div><div>This paper employs density functional theory to investigate the structural stability, mechanical properties, electronic structure, piezoelectric properties, and carrier mobility of quaternary IV-VI monolayer SiGeSTe. The results show that SiGeSTe monolayer exhibits a stable puckered structure similar to phosphorene and more flexible mechanical properties. The SiGeSTe monolayer also demonstrates a large out-of-plane piezoelectric coefficient of up to 1.04 pm/V and an electron mobility of 9308.28 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>, indicating that quaternary monolayer SiGeSTe can serve as a candidate material for high-performance flexible piezoelectric electronic devices.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"410 ","pages":"Article 140254"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials LettersPub Date : 2026-05-01Epub Date: 2026-02-11DOI: 10.1016/j.matlet.2026.140246
Xingtao Wang , Ping Huang , Fei Wang
{"title":"Achieving superior strain hardening in a bimodal L12-strengthened CoNiAlNbMoTa multi-principal element alloy","authors":"Xingtao Wang , Ping Huang , Fei Wang","doi":"10.1016/j.matlet.2026.140246","DOIUrl":"10.1016/j.matlet.2026.140246","url":null,"abstract":"<div><div>Achieving substantial strain hardening in gigapascal-yield-strength face-centered cubic (FCC) alloys is highly challenge. Herein we developed a CoNiAlNbMoTa multi-principal element alloy (MPEA) with bimodal coherent L1<sub>2</sub> nanoprecipitates and Mo-tuned stacking-fault-energy (SFE). This alloy exhibits a excellent yield strength (YS) of 1055 MPa, 19.71% uniform elongation, and an ultra-high ultimate-tensile-strength (UTS) of 2034 MPa, yielding a rare UTS/YS ratio of ∼1.93 for precipitation-strengthened systems. The matrix SFE, calculated via a classical thermodynamic model, is 34.99 mJ/m<sup>2</sup> (low-to-medium range), providing a theoretical basis for activating of stacking-fault-mediated deformation mechanisms. The superior performance originated from a synergistic mechanism: bimodal precipitates provide initial strengthening and induce heterogeneous deformation, while tailored SFE enables sequential multi-stage hardening via planar slip, twinning, and microbanding.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"410 ","pages":"Article 140246"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials LettersPub Date : 2026-05-01Epub Date: 2026-02-04DOI: 10.1016/j.matlet.2026.140218
Aqsa Kanwal , Song Luo , Xiaohe Tian , Xiangyu Yan , Luming Tian , Bo Liu , Liwei Yao , Kewei Hu , Hong Wu
{"title":"PEI surface-modified COF-MXene composite membrane for monovalent and divalent ions separation","authors":"Aqsa Kanwal , Song Luo , Xiaohe Tian , Xiangyu Yan , Luming Tian , Bo Liu , Liwei Yao , Kewei Hu , Hong Wu","doi":"10.1016/j.matlet.2026.140218","DOIUrl":"10.1016/j.matlet.2026.140218","url":null,"abstract":"<div><div>Conventional polymeric membranes face persistent challenges due to similar hydrated radii of monovalent and divalent ions and stronger electrostatic attraction toward divalent ions. Herein, a PEI-modified TpPa-SO<sub>3</sub>H COF-MXene composite membrane was fabricated by vacuum-assisted assembly. Positively charged PEI, sulfonated COF nanopores, and MXene nanochannels synergistically enhance size sieving and electrostatic repulsion, achieving high monovalent/divalent ion selectivities of 40, 37.5, and 24 for K<sup>+</sup>/Mg<sup>2+</sup>, Li<sup>+</sup>/Mg<sup>2+</sup>, and Na<sup>+</sup>/Mg<sup>2+</sup> respectively, along with excellent aqueous stability over 7 days of immersion.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"410 ","pages":"Article 140218"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials LettersPub Date : 2026-05-01Epub Date: 2026-02-10DOI: 10.1016/j.matlet.2026.140241
Jiachang Ruan , Rongzhi Zhao , Jie Yang , Huawei Rong , Yixing Li , Xuefeng Zhang
{"title":"Near-field radiation suppression by electromagnetic interference shielding materials filled with morphology-regulated silver nanoparticles","authors":"Jiachang Ruan , Rongzhi Zhao , Jie Yang , Huawei Rong , Yixing Li , Xuefeng Zhang","doi":"10.1016/j.matlet.2026.140241","DOIUrl":"10.1016/j.matlet.2026.140241","url":null,"abstract":"<div><div>The high-density integration of high-frequency electronics has intensified challenges related to electromagnetic interference (EMI). This study employs a liquid-phase reduction method to induce a morphological transition of silver nanoparticles (AgNPs) from quasi-spherical to rod-like shapes and back to quasi-spherical by precisely modulating the concentration of polyethylene glycol (PEG). FT-IR and XRD characterizations confirmed that the ether oxygen atoms in the PEG chains form strong coordination bonds with the silver surface, effectively passivating high-energy crystal facets and regulating anisotropic growth. Notably, AgNPs synthesized with 10.8 mM PEG exhibit superior dispersion within epoxy matrices. A 0.6 mm-thick shielding patch fabricated using these particles achieved a conductivity of 948 S/m and a peak X-band EMI shielding effectiveness of 52 dB. Furthermore, near-field tests demonstrated exceptional noise suppression, reducing signal intensity from −69.7 to −78.0 dBm. This work provides a scalable strategy for developing high-performance metal-based EMI shielding materials.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"410 ","pages":"Article 140241"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials LettersPub Date : 2026-05-01Epub Date: 2026-02-09DOI: 10.1016/j.matlet.2026.140237
Xiaoliang Pei, Shaoheng Liu, Wenle Pei
{"title":"Effect of different laser marking shapes on the corrosion resistance of copper-based superhydrophobic coatings","authors":"Xiaoliang Pei, Shaoheng Liu, Wenle Pei","doi":"10.1016/j.matlet.2026.140237","DOIUrl":"10.1016/j.matlet.2026.140237","url":null,"abstract":"<div><div>The superhydrophobic anti-corrosion coating was fabricated by laser etching linear, circular, and triangular grooves onto a copper substrate, combined with solution etching and low surface energy treatment. Experiments demonstrated that the coating with triangular grooves achieved a water contact angle of 155.6°, elevated the corrosion potential to −0.2074 V, and reduced the corrosion current density to 3.99 × 10<sup>−7</sup> A·cm<sup>−2</sup>, representing a two-order-of-magnitude decrease compared to the untreated substrate. This validated the significant influence of groove geometry on anti-corrosion performance, offering novel insights for developing highly efficient anti-corrosion coatings.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"410 ","pages":"Article 140237"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials LettersPub Date : 2026-05-01Epub Date: 2026-02-10DOI: 10.1016/j.matlet.2026.140240
Aleksandra Bętkowska, Marcin Podsiadło, Adelajda Polkowska, Wojciech Polkowski
{"title":"High-temperature mechanical properties of highly porous Hastelloy-X nickel superalloy","authors":"Aleksandra Bętkowska, Marcin Podsiadło, Adelajda Polkowska, Wojciech Polkowski","doi":"10.1016/j.matlet.2026.140240","DOIUrl":"10.1016/j.matlet.2026.140240","url":null,"abstract":"<div><div>In our recent study, we have reported pioneering results on the fabrication procedures, microstructural characteristics, and room-temperature mechanical properties of highly porous Hastelloy X (H-X) alloys with spherical, open porosity of up to 70 vol%. In the present work, the high-temperature mechanical behavior of these materials is investigated at 600, 800, and 1000 °C. The obtained results revealed that our highly porous H-X alloys exhibit mechanical strength at both room and elevated temperatures that are at least one order of magnitude higher than those reported for comparable porous metallic materials in the literature. Microstructural analysis indicates that discontinuously precipitated M<sub>23</sub>C<sub>6</sub>/M<sub>6</sub>C grain boundary carbides play a dominant role in governing the mechanical response of the materials investigated.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"410 ","pages":"Article 140240"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials LettersPub Date : 2026-05-01Epub Date: 2026-02-11DOI: 10.1016/j.matlet.2026.140247
Hua Gao , Weinan Cao , Zhenfeng Jiang , Zhongchuang Liu , Jiangxiong Deng , Yi Zeng , Xianyi Wu , Dongxing Fu , Shu-Juan Bao
{"title":"Borate-enhanced CMC binder for silicon anodes in lithium-ion batteries","authors":"Hua Gao , Weinan Cao , Zhenfeng Jiang , Zhongchuang Liu , Jiangxiong Deng , Yi Zeng , Xianyi Wu , Dongxing Fu , Shu-Juan Bao","doi":"10.1016/j.matlet.2026.140247","DOIUrl":"10.1016/j.matlet.2026.140247","url":null,"abstract":"<div><div>Silicon is recognized as the most promising anode material for lithium ion batteries (LIBs) due to its high theoretical specific capacity (4200 mAh g<sup>−1</sup>). However, the significant volume expansion of Si during cycling restricts its practical application in LIBs. The binder is critical in mitigating the volume expansion stress of Si. This study discusses a new binder, CMC-SB, synthesized by linking sodium tetraborate (SB) with carboxymethyl cellulose sodium (CMC) via borate ester bonds, which enhances the flexibility of the binder. After being folded and subjected to a 200-g load, the CMC-SB film remains intact without breakage, indicating superior flexibility compared to CMC. When used as a binder for Si anodes, CMC-SB significantly improves battery stability during long-term cycling.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"410 ","pages":"Article 140247"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}