Conventional 316 L stainless steel (316 L SS) coatings face inherent microstructural and performance drawbacks that limit their service reliability. Herein, an INHEA alloy consisting of 25 wt% Inconel 718 superalloy and 75 wt% FeCrNiAlCu high-entropy alloy was introduced as an integrated reinforcing constituent to fabricate INHEA-reinforced 316 L SS composite coatings by laser-directed energy deposition (LDED), and their phase composition, microstructure, and property evolution were systematically investigated. The results reveal that increasing INHEA content transforms the 316 L composite coating from a single FCC phase into a mixed structure with coexisting FCC, BCC and secondary phases. Laves and core–shell structured phases precipitate when the INHEA content exceeds 15 wt%, alongside notable grain refinement. The 45 wt% INHEA-reinforced 316 L coating delivers the optimal overall performance: its hardness is 85.76% higher than pure 316 L SS (surpassing Inconel 718), and wear volume decreases by 66.67%. The enhanced hardness is primarily attributed to the synergistic effects of second-phase, solid-solution, and dislocation strengthening mechanisms. Furthermore, 45 wt% INHEA addition significantly enhances corrosion resistance by thickening the passive film, raising corrosion and pitting potentials, increasing polarization resistance by one order of magnitude, and reducing corrosion current density.
传统的316 L不锈钢（316 L SS）涂层存在固有的微观结构和性能缺陷，限制了其使用可靠性。本文采用激光定向能沉积（LDED）技术，将含有25 wt% Inconel 718高温合金和75 wt% FeCrNiAlCu高熵合金的INHEA合金作为整体增强成分，制备了INHEA增强316 L SS复合涂层，并对其相组成、显微组织和性能演变进行了系统研究。结果表明：随着INHEA含量的增加，316 L复合涂层由单一的FCC相转变为FCC相、BCC相和次级相并存的混合结构；当INHEA含量超过15 wt%时，析出片状和核壳结构相，晶粒细化显著。45 wt% inhea增强的316 L涂层提供了最佳的整体性能：其硬度比纯316 L SS高85.76%（超过Inconel 718），磨损量减少66.67%。硬度的提高主要是由于第二相、固溶和位错强化机制的协同作用。此外，添加45 wt%的INHEA可以通过增厚钝化膜，提高腐蚀电位和点蚀电位，使极化电阻提高一个数量级，降低腐蚀电流密度，显著提高耐蚀性。
{"title":"Microstructure and property regulation of IN718/FeCrNiAlCu reinforced 316 L SS composite coatings via laser-directed energy deposition","authors":"Senao Gao, Huakai Mao, Haitao Duan, Nian Liu, Guodong Zhang","doi":"10.1016/j.apsusc.2026.168678","DOIUrl":"10.1016/j.apsusc.2026.168678","url":null,"abstract":"<div><div>Conventional 316 L stainless steel (316 L SS) coatings face inherent microstructural and performance drawbacks that limit their service reliability. Herein, an INHEA alloy consisting of 25 wt% Inconel 718 superalloy and 75 wt% FeCrNiAlCu high-entropy alloy was introduced as an integrated reinforcing constituent to fabricate INHEA-reinforced 316 L SS composite coatings by laser-directed energy deposition (LDED), and their phase composition, microstructure, and property evolution were systematically investigated. The results reveal that increasing INHEA content transforms the 316 L composite coating from a single FCC phase into a mixed structure with coexisting FCC, BCC and secondary phases. Laves and core–shell structured phases precipitate when the INHEA content exceeds 15 wt%, alongside notable grain refinement. The 45 wt% INHEA-reinforced 316 L coating delivers the optimal overall performance: its hardness is 85.76% higher than pure 316 L SS (surpassing Inconel 718), and wear volume decreases by 66.67%. The enhanced hardness is primarily attributed to the synergistic effects of second-phase, solid-solution, and dislocation strengthening mechanisms. Furthermore, 45 wt% INHEA addition significantly enhances corrosion resistance by thickening the passive film, raising corrosion and pitting potentials, increasing polarization resistance by one order of magnitude, and reducing corrosion current density.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"755 ","pages":"Article 168678"},"PeriodicalIF":6.6,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149213950","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}
Pub Date : 2026-10-05DOI: 10.1016/j.apsusc.2026.168611
Xia Yan, Shouya Wu, Zhaomin Li
To clarify microscopic competitive adsorption characteristics of methane (CH4) and carbon dioxide (CO2) on coal surfaces, a constitutive model for CO2–CH4 competitive adsorption on coal surfaces is derived based on the Lennard-Jones intermolecular potential theory. The model accuracy has verified against both molecular dynamics simulation results and competitive adsorption experimental data. Model analysis results reveal that: the densities of CO2 and CH4 both increase initially and then decrease with decreasing distance from coal surface. The location of maximum CO2 density is closer to the surface than that of CH4, which is a characteristic parameter characterizing the CO2 competitive adsorption superiority. The average molar fraction of CO2 in adsorption region is significantly higher than that in the free phase. The CO2 competitive adsorption selectivity coefficient decreases by a power law and gradually approaches 1 with increasing CO2 mole fraction in free region. The CO2 competitive adsorption superiority weakens significantly when the CO2 mole fraction in free region exceeds 40%. During pressurization below 10 megapascal (MPa), the free CO2 gradually transforms into the adsorbed state, and CO2 competitive adsorption superiority is enhanced. The CO2 competitive adsorption selectivity coefficients show linearly upward trend with increasing pressure and power-law downward trend with increasing temperature.
{"title":"Microscopic competitive adsorption characteristics of CH4–CO2 on coal surface","authors":"Xia Yan, Shouya Wu, Zhaomin Li","doi":"10.1016/j.apsusc.2026.168611","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168611","url":null,"abstract":"To clarify microscopic competitive adsorption characteristics of methane (CH<ce:inf loc=\"post\">4</ce:inf>) and carbon dioxide (CO<ce:inf loc=\"post\">2</ce:inf>) on coal surfaces, a constitutive model for CO<ce:inf loc=\"post\">2</ce:inf>–CH<ce:inf loc=\"post\">4</ce:inf> competitive adsorption on coal surfaces is derived based on the Lennard-Jones intermolecular potential theory. The model accuracy has verified against both molecular dynamics simulation results and competitive adsorption experimental data. Model analysis results reveal that: the densities of CO<ce:inf loc=\"post\">2</ce:inf> and CH<ce:inf loc=\"post\">4</ce:inf> both increase initially and then decrease with decreasing distance from coal surface. The location of maximum CO<ce:inf loc=\"post\">2</ce:inf> density is closer to the surface than that of CH<ce:inf loc=\"post\">4</ce:inf>, which is a characteristic parameter characterizing the CO<ce:inf loc=\"post\">2</ce:inf> competitive adsorption superiority. The average molar fraction of CO<ce:inf loc=\"post\">2</ce:inf> in adsorption region is significantly higher than that in the free phase. The CO<ce:inf loc=\"post\">2</ce:inf> competitive adsorption selectivity coefficient decreases by a power law and gradually approaches 1 with increasing CO<ce:inf loc=\"post\">2</ce:inf> mole fraction in free region. The CO<ce:inf loc=\"post\">2</ce:inf> competitive adsorption superiority weakens significantly when the CO<ce:inf loc=\"post\">2</ce:inf> mole fraction in free region exceeds 40%. During pressurization below 10 megapascal (MPa), the free CO<ce:inf loc=\"post\">2</ce:inf> gradually transforms into the adsorbed state, and CO<ce:inf loc=\"post\">2</ce:inf> competitive adsorption superiority is enhanced. The CO<ce:inf loc=\"post\">2</ce:inf> competitive adsorption selectivity coefficients show linearly upward trend with increasing pressure and power-law downward trend with increasing temperature.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"21 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123691","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}
Pub Date : 2026-10-02DOI: 10.1016/j.apsusc.2026.168581
Martín I. Broens, Omar E. Linarez Pérez
In this work, we report the controlled electrodeposition of Ag nanoparticles on anodic TiO2 nanotube films (TiO2-NTFs) for their application as Surface-Enhanced Raman Scattering (SERS) platforms. The influence of TiO2 crystallinity, AgNO3 precursor concentration, and the number of galvanostatic deposition cycles was systematically investigated to achieve fine control over nanoparticle size, surface density, and distribution. Morphological analysis revealed that amorphous and anatase TiO2-NTFs promoted uniform, high-density Ag nanoparticle deposition. In contrast, the mixed anatase–rutile film exhibited lower Ag nanoparticle coverage and cookie-type aggregates, which may be associated with its higher wall resistivity. At low AgNO3 concentrations, uniform and nanosized Ag particles were obtained, whereas higher concentrations led to localized nucleation and the formation of microcrystals. The resulting TiO2-NTF/Ag films displayed strong SERS activity toward 2-mercaptopyridine, with responses that, under some conditions, exceeded those reported for similar photoreduction-based platforms. Notably, the SERS performance depends on the balance among nanoparticle size, surface density, and spatial distribution, highlighting the importance of precise electrochemical control in tailoring high-performance SERS substrates.
{"title":"Fine-tuning the electrochemical deposition of Ag nanoparticles on TiO2 nanotube array films for Surface-Enhanced Raman Scattering","authors":"Martín I. Broens, Omar E. Linarez Pérez","doi":"10.1016/j.apsusc.2026.168581","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168581","url":null,"abstract":"In this work, we report the controlled electrodeposition of Ag nanoparticles on anodic TiO<ce:inf loc=\"post\">2</ce:inf> nanotube films (TiO<ce:inf loc=\"post\">2</ce:inf>-NTFs) for their application as Surface-Enhanced Raman Scattering (SERS) platforms. The influence of TiO<ce:inf loc=\"post\">2</ce:inf> crystallinity, AgNO<ce:inf loc=\"post\">3</ce:inf> precursor concentration, and the number of galvanostatic deposition cycles was systematically investigated to achieve fine control over nanoparticle size, surface density, and distribution. Morphological analysis revealed that amorphous and anatase TiO<ce:inf loc=\"post\">2</ce:inf>-NTFs promoted uniform, high-density Ag nanoparticle deposition. In contrast, the mixed anatase–rutile film exhibited lower Ag nanoparticle coverage and cookie-type aggregates, which may be associated with its higher wall resistivity. At low AgNO<ce:inf loc=\"post\">3</ce:inf> concentrations, uniform and nanosized Ag particles were obtained, whereas higher concentrations led to localized nucleation and the formation of microcrystals. The resulting TiO<ce:inf loc=\"post\">2</ce:inf>-NTF/Ag films displayed strong SERS activity toward 2-mercaptopyridine, with responses that, under some conditions, exceeded those reported for similar photoreduction-based platforms. Notably, the SERS performance depends on the balance among nanoparticle size, surface density, and spatial distribution, highlighting the importance of precise electrochemical control in tailoring high-performance SERS substrates.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"27 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123732","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}
Pub Date : 2026-10-01DOI: 10.1016/j.apsusc.2026.168551
Josue Moreno-Arceo,Margaret M.A. Peters,Saurabh Karande,Yuqing Cozzens,Curtis L. Wright,James E. Whitten
{"title":"Adsorption of amine-, carboxylic acid-, phosphonic acid-, and thiol-terminated long-chain aliphatic molecules on metal oxide nanoparticles and facile preparation of superhydrophobic surfaces","authors":"Josue Moreno-Arceo,Margaret M.A. Peters,Saurabh Karande,Yuqing Cozzens,Curtis L. Wright,James E. Whitten","doi":"10.1016/j.apsusc.2026.168551","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168551","url":null,"abstract":"","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"1 1","pages":"168551"},"PeriodicalIF":6.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149089141","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}
Pub Date : 2026-10-01DOI: 10.1016/j.apsusc.2026.168556
Yanlan Zhou, Ruishuo Guo, Huijia Wang, Xin Xu, Zhiqiang Li, Zhuolu Li, Xile Chen, Ni Li
Polyethylene glycol (PEG)-based phase change fibrous membranes are promising flexible thermal management materials, but their performance is often limited by melting-induced deformation, low heat-transfer efficiency, and insufficient cycling stability. In this study, an APTES-regulated interfacial loading strategy was developed by loading amino-functionalized n-octadecane/SiO2 phase change nanocapsules (Nx-PCNCs) onto electrospun PU/PEG fibrous membranes. The effect of APTES concentration on the capsule loading state and thermal management performance was systematically investigated. Moderate APTES modification improved the loading and dispersion of PCNCs on the fiber. Among the samples, PU/PEG/N20-PCNCs showed a relatively uniform particle distribution and a thermal conductivity of 0.129 ± 0.015 W · m⁻1 · K⁻1. The composite fibrous membrane maintained stable phase-change behavior after 200 melting–crystallization cycles and 20 water-treatment cycles, demonstrating good cycling stability under the tested conditions. Moreover, PU/PEG/N20-PCNCs exhibited an average solar reflectance of approximately 95 ± 0.8% and reduced the surface temperature by 9.2 and 2.3 °C compared with PU and PU/PEG fibrous membranes under simulated solar irradiation. These results demonstrate that APTES-regulated interfacial loading of PCNCs is an effective strategy for improving the thermal storage, stability, and temperature-buffering performance of PU/PEG phase change fibrous membranes.
{"title":"Aptes-regulated interfacial loading of n-octadecane/SiO2 phase change nanocapsules on PU/PEG fibrous membranes for stable thermal management","authors":"Yanlan Zhou, Ruishuo Guo, Huijia Wang, Xin Xu, Zhiqiang Li, Zhuolu Li, Xile Chen, Ni Li","doi":"10.1016/j.apsusc.2026.168556","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168556","url":null,"abstract":"Polyethylene glycol (PEG)-based phase change fibrous membranes are promising flexible thermal management materials, but their performance is often limited by melting-induced deformation, low heat-transfer efficiency, and insufficient cycling stability. In this study, an APTES-regulated interfacial loading strategy was developed by loading amino-functionalized n-octadecane/SiO<ce:inf loc=\"post\">2</ce:inf> phase change nanocapsules (N<ce:inf loc=\"post\">x</ce:inf>-PCNCs) onto electrospun PU/PEG fibrous membranes. The effect of APTES concentration on the capsule loading state and thermal management performance was systematically investigated. Moderate APTES modification improved the loading and dispersion of PCNCs on the fiber. Among the samples, PU/PEG/N<ce:inf loc=\"post\">20</ce:inf>-PCNCs showed a relatively uniform particle distribution and a thermal conductivity of 0.129 ± 0.015 W · m⁻<ce:sup loc=\"post\">1</ce:sup> · K⁻<ce:sup loc=\"post\">1</ce:sup>. The composite fibrous membrane maintained stable phase-change behavior after 200 melting–crystallization cycles and 20 water-treatment cycles, demonstrating good cycling stability under the tested conditions. Moreover, PU/PEG/N<ce:inf loc=\"post\">20</ce:inf>-PCNCs exhibited an average solar reflectance of approximately 95 ± 0.8% and reduced the surface temperature by 9.2 and 2.3 °C compared with PU and PU/PEG fibrous membranes under simulated solar irradiation. These results demonstrate that APTES-regulated interfacial loading of PCNCs is an effective strategy for improving the thermal storage, stability, and temperature-buffering performance of PU/PEG phase change fibrous membranes.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"28 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123638","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}
Pub Date : 2026-10-01DOI: 10.1016/j.apsusc.2026.168566
SeongUk Yun,Dohyun Go,Xinyu Wang,Ping-Che Lee,Prabhakar R. Bandaru,Andrew C. Kummel
{"title":"Homogeneous N-polar AlScN sputtered films using a single AlSc alloy target and in-situ AlSc template","authors":"SeongUk Yun,Dohyun Go,Xinyu Wang,Ping-Che Lee,Prabhakar R. Bandaru,Andrew C. Kummel","doi":"10.1016/j.apsusc.2026.168566","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168566","url":null,"abstract":"","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"528 1","pages":"168566"},"PeriodicalIF":6.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149089821","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}
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