Surface & Coatings Technology最新文献

{"title":"Improving the corrosion resistance and mechanical properties of 2205 duplex stainless steel welded joints by laser cladding CoCrFeNiTiSi high-entropy alloys coating","authors":"Hua Yang ,&nbsp;Fengyuan Shu ,&nbsp;Jia Deng ,&nbsp;Xin Zhang ,&nbsp;YuZhong Ren ,&nbsp;Bing Lei ,&nbsp;Xin Yuan","doi":"10.1016/j.surfcoat.2025.132137","DOIUrl":"10.1016/j.surfcoat.2025.132137","url":null,"abstract":"<div><div>Laser cladded CoCrFeNiTiSi high-entropy alloy (HEA) coatings with excellent comprehensive properties and promising application potential were proposed to improve the corrosion resistance and mechanical properties of 2205 duplex stainless steel (DSS) metal inert gas (MIG) weld joints. The microstructure, the mechanical properties, and the corrosion resistance of the HEAs were investigated systematically by way of scanning electron microscope (SEM), transmission electron microscope (TEM), quasi-static tensile test, and electrochemical test, etc. The laser cladded coatings were composited of FCC and BCC phases and characterized by fine equiaxed grains. Microstructure evolution of cladded coatings was achieved through changing the input current during laser cladding process so as to manipulated the corrosion resistance and mechanical properties, whereas variation was hardly observed in the types of phases in the coatings. As compared with the WM, the pitting corrosion resistance of laser cladded weld metal (LCWM) was significantly improved, which should be attributed to the passivation effect of Cr element in HEA materials. The excellent mechanical properties of LCWM were supposed to be originated from the strengthening effect of refined grains and the formation of BCC phase hindering dislocation movement. Coatings obtained with input current of 340 A had presented the best pitting corrosion resistance while the coatings with input current of 380 A exhibited perfect combination of improved strength and enhanced ductility. The WM was entitled excellent pitting corrosion resistance by laser cladded HEA coatings whereas the traditional soften effect of HAZ was fortunately avoided, which gave birth to a comprehensive improvement in mechanical properties and corrosion resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"507 ","pages":"Article 132137"},"PeriodicalIF":5.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835266","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":"Structure and performance insights in La modified carbon quantum dots-epoxy coating with efficiency corrosion and wear resistance","authors":"Qi Zeng ,&nbsp;Haitao Yin ,&nbsp;Qunfang Li ,&nbsp;Ihor I. Bulyk ,&nbsp;Zhixiang Wang ,&nbsp;Shengguo Zhou","doi":"10.1016/j.surfcoat.2025.132108","DOIUrl":"10.1016/j.surfcoat.2025.132108","url":null,"abstract":"<div><div>Epoxy resin is a very versatile material but has limited corrosion and wear resistance. Carbon quantum dots are a new type of corrosion inhibitor material with good dispersibility. In this paper, lanthanum nitrate, ethylenediamine and citric acid were mixed to prepare lanthanum‑nitrogen doped carbon quantum dots (La/N-CQDs) by a hydrothermal method, which could show good dispersion and compatibility in epoxy resin. Meanwhile, a series of La/N-CQDs modified La/N-CQDs@EP coatings with long-term corrosion resistance and friction reduction were successfully prepared on the NdFeB surface by spin-coating method. The results of electrochemical tests and tribological tests show that the La/N-CQDs doped EP composite coatings could effectively enhance the anti-corrosion and anti-wear protection to the NdFeB surface. The La/N-CQDs@EP composite coating doped with 2 wt% La/N-CQDs showed the lowest corrosion current density and remained the highest impedance modulus after 14 days of immersion in 3.5 wt% NaCl solution. While the La/N-CQDs@EP composite coating doped with 1.5 wt% La/N-CQDs possess relatively low friction coefficient and wear rate. The excellent corrosion protection and wear resistance of the La/N-CQDs@EP coatings were mainly due to the enhanced interfacial bonding, and improved the densification of the epoxy resin structure. These indicated that La/N-CQDs modified EP composite coatings could effectively control the corrosion and wear loss of NdFeB in some harsh environments.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"507 ","pages":"Article 132108"},"PeriodicalIF":5.3,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823737","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":"Ellipsometric characterization of magnetron sputtered metal-dielectric-metal (MDM) multilayers for Optical Vernier Scale biosensors with ultra-high sensitivity and large dynamic range","authors":"Yun Zhang,&nbsp;May Thawda Phoo,&nbsp;Juan Antonio Zapien","doi":"10.1016/j.surfcoat.2025.132133","DOIUrl":"10.1016/j.surfcoat.2025.132133","url":null,"abstract":"<div><div>We provide a systematic investigation of the optical properties of a hybrid plasmonic–photonic Optical Vernier Scale (OVS) biosensor using multiple zero-reflection points (ZRPs) with ultra-low limit of detection (LoD) of ~10⁻⁸ refractive index unit (RIU) and large dynamic range of ~6 orders of magnitude in RIU sensing. The synergic collaboration of <em>p</em>- and <em>s</em>-polarized ZRPs results in the OVS operation mode that enables precise optical quantification of biomolecular interaction events based on the dynamic fitting of the sensing medium's refractive index changes. The optical model provides a quantitative description of the biosensor operation in terms of its structure and the parameterized dispersion properties of the constitutive silver (Ag) and aluminum nitride (AlN) layers, in the spectral range from 320 to 1690 nm, as well as the ability to follow the dynamic RIU changes in real-time during sensor functionalization and operation. The AlN thin films were first deposited on glass substrates by reactive magnetron sputtering from Al target under different Ar/N₂ gas ratios at room temperature. The optical constants, thickness, and surface roughness of the AlN thin films were then investigated using spectroscopic ellipsometry. It was found that the reactive gas flow ratio can control the optical properties of the AlN films. When the reactive gas ratio was adjusted from 30 % to 70 %, the refractive index (<em>n</em>) of the AlN thin films varied from 1.75 to 1.84 at a wavelength of 633 nm, the extinction coefficient (<em>k</em>) of the AlN samples varied from 0.005 to 0.05 at a wavelength of 233 nm, and the band gap <span><math><msub><mi>E</mi><mi>g</mi></msub></math></span>, defined where the extinction coefficient <em>k</em> &lt; 0.001, varies between 0 and 5.03 eV. Finally, the application of the AlN film in a metal-dielectric-metal (MDM) multilayer was investigated, showing unique spectral characteristics by total internal reflection ellipsometry measurements and used for the bio-detection of rabbit IgG with a LoD below 10 ng/mL. The demonstrated stability and reliability of our fitting method, coupled with the excellent sensitivity of the MDM multilayer structure, make this system highly competitive in the field of biosensing.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"507 ","pages":"Article 132133"},"PeriodicalIF":5.3,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829143","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":"Study on properties and tribological behaviors of silicon nitride-based Ti-DLC films","authors":"Xiaolong Wang ,&nbsp;Songhua Li ,&nbsp;Shengqi Fan ,&nbsp;Dantong Yu ,&nbsp;Jing Deng ,&nbsp;Chuang Zuo","doi":"10.1016/j.surfcoat.2025.132131","DOIUrl":"10.1016/j.surfcoat.2025.132131","url":null,"abstract":"<div><div>Silicon nitride is widely used in ceramic bearings. Silicon nitride-based Ti-DLC films with different low doped Ti content were prepared by multifunctional high frequency magnetron sputtering system, to expand the application of silicon nitride in aerospace and modern industry by improving its tribological properties. SEM, Raman, XPS and AFM were used to analyze the structure and composition of the films. The mechanical properties were measured by nanoindentation and scratch test. The tribological performances were studied at room temperature and the friction and wear mechanism was analyzed. Ti-DLC films with low doped Ti content present a dense amorphous structure. The content of sp³-C in Ti-DLC films increases first and then decreases, with the increase of doped Ti content. It means that the increase of doped Ti content improves the hardness, elastic modulus and the adhesion behaviors. Moreover, the increase of doped Ti content reduces friction coefficient and wear rate, which is beneficial to tribological performance. The tribological performances of silicon nitride-based Ti-DLC films are optimal when the doped Ti content is 0.64 at. %, and the average friction coefficient is as low as 0.006 which is close to super slippery and the wear rate is 3.68 × 10⁻⁷ mm³·N⁻¹·m⁻¹. The design prepared the ultra-low friction Ti-DLC film on the silicon nitride can reduce harmful friction losses, creating application possibilities of silicon nitride in harsh conditions. Particularly, it provides new ideas and technical support for the manufacture of self-lubricating silicon nitride bearings.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"506 ","pages":"Article 132131"},"PeriodicalIF":5.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792439","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 “Effect of TiB2 content on the microstructure, corrosion behavior, and wear resistance of (Fe50Mn30Co10Cr10)0.8-x(TiB2)xMo0.2 high-entropy alloy coatings by laser cladding” [Surf. Coat. Technol. volume 496, 15 January 2025, 131662/https://doi.org/10.1016/j.surfcoat.2024.131662]","authors":"Jiaye Geng ,&nbsp;Xiaohui Yang ,&nbsp;Guicheng Wang ,&nbsp;Ming Yin ,&nbsp;Jucai Li ,&nbsp;Yan Li","doi":"10.1016/j.surfcoat.2025.132096","DOIUrl":"10.1016/j.surfcoat.2025.132096","url":null,"abstract":"","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"505 ","pages":"Article 132096"},"PeriodicalIF":5.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859122","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":"Multifunctional Ag/MWCNT/HA coatings on Ti6Al4V alloy via plasma electrolytic oxidation: Enhanced electrochemical and antibacterial properties for dental implants","authors":"Mahendran Logesh,&nbsp;Han-Cheol Choe","doi":"10.1016/j.surfcoat.2025.132128","DOIUrl":"10.1016/j.surfcoat.2025.132128","url":null,"abstract":"<div><div>This study investigates an innovative surface modification approach for Ti6Al4V dental implants using plasma electrolytic oxidation (PEO) to create a multifunctional coating incorporating hydroxyapatite (HA), multi-walled carbon nanotubes (MWCNTs), and silver nanoparticles (Ag NPs). The research aims to enhance the implant's mechanical properties, corrosion resistance, and antibacterial efficacy. Various concentrations of Ag NPs were integrated into the coating to optimize performance. Surface characterization techniques, including field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and roughness measurements, were employed to analyze the coating's morphology and composition. Mechanical properties were assessed through nanoindentation tests. Corrosion behavior was evaluated using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) in 0.9 % NaCl environment. The antibacterial activity was tested against <em>Escherichia coli</em>. Results demonstrate that the Ag/MWCNT/HA coating significantly improves surface characteristics, with the optimal Ag NP concentration enhancing corrosion resistance (<em>R</em>_<em>p</em> = 3.25 × 10¹⁵ Ω.cm²) and antibacterial performance. This innovative coating system shows promise for improving the longevity and success rate of dental implants.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"507 ","pages":"Article 132128"},"PeriodicalIF":5.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815231","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":"A facile synthesis of density-tunable ZnO nanorod-array on PVTF film for biomedical application","authors":"Siyuan Fan ,&nbsp;Xuzhao He ,&nbsp;Wenjian Weng ,&nbsp;Chengwei Wu ,&nbsp;Kui Cheng","doi":"10.1016/j.surfcoat.2025.132125","DOIUrl":"10.1016/j.surfcoat.2025.132125","url":null,"abstract":"<div><div>The nanotopological morphology of biomaterials plays a significant role in cytocompatibility. As a coating for tissue engineering implants, zinc oxide nanorod (ZNR) arrays are usually utilized as anti-adhesion layers for cells with relatively limited applications in regulating cytocompatibility such as cell adhesion and proliferation. In this study, ZNR arrays were loaded onto the surface of the poly (vinylidene fluoride-trifluoroethylene) (PVTF) substrate, and an embedding effect of molten PVTF on ZNR was achieved through high temperature capillary phenomenon. The embedding degree could be controlled by adjusting the C-axis orientation of ZNR arrays, thus allowing the construction of PVTF-ZNR composite films with varying nanorod distribution densities. The tunable surface nanotopology structure regulated the adhesion and proliferation behaviors of bone marrow mesenchymal stem cells (BMSCs), among which the surface nanostructure with a low nanorod distribution density was conducive to the spreading and proliferation of BMSCs. Furthermore, the nanostructure can detach from the surface after the early stage of adhesion and proliferation, ceasing to affect cellular behavior. The composite film is beneficial for tissue regeneration implants to promote cell adhesion and proliferation in early implantation. Additionally, it's promising in further repair due to the excellent piezoelectric property of PVTF.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"506 ","pages":"Article 132125"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792438","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":"High entropy oxide thin films of (HfNbTaTiZr)Ox by pulsed laser deposition","authors":"Muhamad Jalu Purnomo ,&nbsp;Yu-Chieh Lee ,&nbsp;Ching-An Huang ,&nbsp;Ing-Song Yu","doi":"10.1016/j.surfcoat.2025.132129","DOIUrl":"10.1016/j.surfcoat.2025.132129","url":null,"abstract":"<div><div>In recent years, high entropy oxide (HEO) thin films have attracted significant attention due to their exceptional physical, chemical and mechanical properties. Concurrently, pulsed laser deposition (PLD) has emerged as a prominent technique for thin film fabrication, especially for the ceramic materials. This study focuses on the synthesis of (HfNbTaTiZr)O_x thin films on silicon substrates, which was conducted by a 248 nm laser ablation on a high entropy alloy target of HfNbTaTiZr in a high vacuum chamber. A comprehensive suite of analytical techniques was employed to assess the films' morphological characteristics, chemical composition, microstructural, optical and mechanical properties. Morphological analysis conducted through scanning electron microscopy and atomic force microscopy revealed an ultra-smooth and uniform surfaces of thin films. X-ray photoelectron spectroscopy provided detailed insights into the films' chemical state, confirming the oxide layer with five elements of Hf, Nb, Ta, Ti and Zr, namely (HfNbTaTiZr)O_x. Moreover, post-annealing process at different temperatures was carried out for the amorphous (HfNbTaTiZr)O_x film. The microstructures of (HfNbTaTiZr)O_x thin films were investigated by X-ray diffraction and transmission electron microscopy. The surface morphology and phase transformation of (HfNbTaTiZr)O_x thin films were observed after annealing from 700 to 850 °C. Finally, their optical and mechanical properties of (HfNbTaTiZr)O_x thin films, were analyzed by spectroscopic ellipsometry and nanoindentation test, respectively. In this report, we have first illustrated an advanced PLD approach to fabricate an ultra-smooth HEO thin film of (HfNbTaTiZr)O_x, which could be a potential functional material for a wide range of applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"505 ","pages":"Article 132129"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776411","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":"ZnO:(B, Ga)/Au electrodes for improved Ohmic contacts on ultrawide-bandgap Ga2O3 films","authors":"Haofei Huang ,&nbsp;Hengzhi Xing ,&nbsp;Wei Zhang ,&nbsp;Shilin Wang ,&nbsp;Ke Tang ,&nbsp;Lujun Wang ,&nbsp;Lulu Wang ,&nbsp;Zhichao Qian ,&nbsp;Jian Huang ,&nbsp;Linjun Wang","doi":"10.1016/j.surfcoat.2025.132127","DOIUrl":"10.1016/j.surfcoat.2025.132127","url":null,"abstract":"<div><div>Gallium oxide (Ga₂O₃) is an ultrawide-bandgap semiconductor material known for its high breakdown field strength, large Baliga's figure of merit, and significant thermal and chemical stability, making it suitable for advanced technological applications. In this paper, Ga₂O₃ films were prepared using radio-frequency (RF) magnetron sputtering. B and Ga co-doped ZnO (BGZO)/Au composite electrodes were developed to achieve improved Ohmic contact characteristics with Ga₂O₃ films, comparing these results with those of widely used Ti/Au electrodes. The specific contact resistance of the electrodes was quantitatively measured using the dot circular transmission line model (d-CTLM) method. The results indicate that the presence of BGZO intermediate semiconductor layers (ISL) with appropriate thickness effectively reduces the specific contact resistance between the electrode and the Ga₂O₃ film, and the minimum specific contact resistance value is 1.049 × 10⁻² Ω·cm². This research provides critical insights into optimizing electrode to enhance the performance and reliability of Ga₂O₃-based devices.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"506 ","pages":"Article 132127"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792436","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":"Ex-situ observation of microstructure evolution and electrical resistance transition in micro joints under electron current stressing","authors":"Yi-An Wu ,&nbsp;Zhao-Yu Yang ,&nbsp;Pei-Chia Hsu ,&nbsp;Chih-Ming Chen ,&nbsp;Yu-An Shen ,&nbsp;Cheng-En Ho","doi":"10.1016/j.surfcoat.2025.132124","DOIUrl":"10.1016/j.surfcoat.2025.132124","url":null,"abstract":"<div><div>Micro joint fabrication is a prevalent technology for microelectronic industry and the joint electrical and mechanical integrities significantly impact the electronic package reliability. In this study, the transitions in electrical resistance and crystallographic characteristics (grain orientation and size) of micro joints upon electron current stressing was characterized using an ohmmeter and an electron backscatter diffraction analysis system equipped in a field-emission scanning electron microscope. A significant decrease (approximately 7 %) in the joint electrical resistance accompanied with β-Sn grain reorientation and grain boundary elimination was induced in a few hours of the current stressing test. Mayadas-Shatzkes (M-S) model was employed to evaluate the contribution of grain boundary characteristics to the resistance drop, and revealed that approximately 85 % resistance drop was caused by the Sn grain reorientation and the remaining part (approximately 15 %) was by the grain boundary elimination. This quantitative analysis advanced the fundamental understanding of micro-joint characteristics in electrical transition induced by electromigration. Finally, a mitigation strategy of electromigration-induced β-Sn crystallographic and electrical transitions was proposed in this study.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"505 ","pages":"Article 132124"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785260","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}