Surface & Coatings Technology最新文献

{"title":"High-performance Ni-SiC composite coatings with enhanced infrared emissivity via magnetic field-assisted jet electrodeposition","authors":"Jingsi Wang ,&nbsp;Shuang Liu ,&nbsp;Guibin Lou ,&nbsp;Ya Chen ,&nbsp;Haozhe Pang ,&nbsp;Yachao Song ,&nbsp;Syed Mesum Raza Naqvi ,&nbsp;Kai Zhou ,&nbsp;Zongjun Tian ,&nbsp;Muhammad Ali Nasir ,&nbsp;Dongsheng Wang ,&nbsp;Lida Shen","doi":"10.1016/j.surfcoat.2025.132500","DOIUrl":"10.1016/j.surfcoat.2025.132500","url":null,"abstract":"<div><div>High infrared emissivity coatings have important engineering value in aerospace and electronic devices. In this study, a new method for preparing high infrared emissivity coatings using magnetic field-assisted jet electrodeposition was prepared. The magnetic field-assisted jet electrodeposition technique can be used to prepare coatings with rough structures, and the infrared emissivity of nickel particle coatings can reach 0.80 at a magnetic field intensity of 100 mT, which is significantly improved compared with the nickel coatings (0.155) prepared by conventional electrodeposition. A nickel-based SiC composite coating with high infrared emissivity was prepared by combining magnetic field-assisted jet electrodeposition with SiC particles. Compared with the nickel particle coating, the infrared emissivity of the nickel-based SiC composite coating is further improved. At a concentration of 6 g/L SiC particles, the infrared emissivity of the nickel-based SiC composite coating reached 0.94. The synergistic effect of magnetic field-assisted jet electrodeposition and SiC particles can realize the nickel coatings into coatings with high infrared emissivity.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132500"},"PeriodicalIF":5.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656802","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 WC content promotes continuous eutectic structure formation and enhances wear resistance in WC/CeO₂-Fe laser cladding coatings","authors":"Zekun Wei ,&nbsp;Wei Wang ,&nbsp;Di Wang ,&nbsp;Kuaishe Wang ,&nbsp;Sefei Yang ,&nbsp;Mengyuan Wang","doi":"10.1016/j.surfcoat.2025.132491","DOIUrl":"10.1016/j.surfcoat.2025.132491","url":null,"abstract":"<div><div>WC/CeO₂-Fe composite coatings with varying WC contents (0, 15, 20, and 25 wt%) were prepared on 27SiMn steel substrates via laser cladding. The effects and underlying mechanisms of WC addition on the microstructure and tribological behavior of the coatings were systematically investigated. Experimental results revealed that increasing WC content significantly enhanced the coating density and promoted the in-situ formation of hard carbide phases, including W₂C, M₂₃C₆, and M₇C₃. The dendritic grains were markedly refined, and the eutectic morphology evolved from isolated rods into continuous bright-white structure. At 25 wt% WC, the coating achieved the highest average microhardness (~635.1 HV_0.2), approximately 42 % higher than the WC-free coating, and the lowest wear rate (3.52 × 10⁻⁶ mm³·N⁻¹·m⁻¹), one order of magnitude lower than the WC-free coating. The thermal decomposition of WC released abundant W and C atoms, which reacted with Fe and Cr in the matrix to form uniformly distributed carbides, contributing to a rigid skeleton and refined grain structure. This study elucidates how high WC content promotes continuous eutectic structure formation and improves the wear performance of WC/CeO₂-Fe coatings, providing a promising approach for the surface reinforcement of 27SiMn steel in heavy-duty mining applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132491"},"PeriodicalIF":5.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662632","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":"Exploring the microstructure and wear-resistance of Fe-Cr-C-W arc cladding coatings by laser remelting","authors":"Yongcun Li ,&nbsp;Xin Liu ,&nbsp;Hang Dong ,&nbsp;Yong Wang","doi":"10.1016/j.surfcoat.2025.132492","DOIUrl":"10.1016/j.surfcoat.2025.132492","url":null,"abstract":"<div><div>In this study, Fe-Cr-C-W cladding coatings were fabricated by arc cladding (AC) and subsequently post-treated through laser remelting (LR). The microstructure was characterized using optical metallography (OM), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The wear resistance was assessed using microhardness tests and a ring-disc tribometer under loads of 300, 400, and 500 N at room temperature (RT) and 200 °C. The impact of LR on the microstructure and wear resistance of the Fe-Cr-C-W cladding coatings was investigated. The results indicate that the two fused cladding coatings predominantly consist of martensite, M₇C₃ and M₂₃C₆ phases. LR refined the grains of the cladding coating, reducing the average dendrite size from 6.34 μm to 4.63 μm, decreasing porosity, and increasing microhardness by 16 % to 858 HV_0.5. At elevated temperatures (200 °C), the average coefficient of friction (COF) for LR-treated coating decreases to 0.115 under a load of 500 N, attributed to the formation of oxide layer and the generation of tempered martensite. At RT, the primary wear mechanism was abrasive wear. At elevated temperatures, adhesive wear intensified and was accompanied by oxidative wear. Furthermore, the LR-treated coating demonstrated a more stable COF and a lower wear rate at 200 °C/500 N, enhancing its suitability for high-temperature and high-load applications. The unique synergy between tempered martensite and oxide film in the Fe-Cr-C-W cladding coatings at 200 °C significantly reduced the COF to 0.115.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132492"},"PeriodicalIF":5.3,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656801","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":"Microstructure evolution of martensite and carbides in 8Cr4Mo4V steel after nitrogen ion implantation","authors":"Jiaxu Guo ,&nbsp;Zifeng Ding ,&nbsp;Lina Zhou ,&nbsp;Xinghong Zhang ,&nbsp;Bin Miao ,&nbsp;Ming Liu ,&nbsp;Xinxin Ma","doi":"10.1016/j.surfcoat.2025.132488","DOIUrl":"10.1016/j.surfcoat.2025.132488","url":null,"abstract":"<div><div>In our previous study, nitrogen plasma immersion ion implantation (N-PIII) was employed to modify the surface of the 8Cr4Mo4V steel, achieving significant improvements in surface hardness and wear resistance. To elucidate the mechanisms behind these improvements, the element concentration, phase composition, and microstructure of the implanted layer were analyzed in this study. The results show that a part of the nitrogen atoms dissolved into the martensite lattice, and the metal atoms at the boundaries of the martensite laths will capture the N atoms, causing them to move to a deeper position. While another part of the nitrogen atoms combined with hexa-M₂C (M is mainly Mo) and fcc-MC (M is mainly V) carbides in 8Cr steel to form fcc-M₂C_xN_1-x/MC_xN_1-x (M is mainly Mo) and fcc-MC_xN_1-x (M is mainly V) carbonitrides. Furthermore, the dislocation multiplication during the N-PIII process will occur at a depth deeper than the implanted layer. These solid solution strengthening, hard secondary phases, and dislocation defect strengthening all contributed to the increase of mechanical properties in the surface layer of the 8Cr steel. In this study, the microstructure evolution of 8Cr4Mo4V steel after N-PIII was analyzed in detail, which is an effective supplement to the understanding of the microstructural evolution of steels subjected to ion implantation.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132488"},"PeriodicalIF":5.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656717","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":"Laser processed bionic super-slippery surfaces toward the electricity generation through low-adhesion sliding of magnetofluid achieving corrosion resistance of marine metals","authors":"Li Zhang ,&nbsp;Jinghan Liu ,&nbsp;Jingyuan Xu ,&nbsp;Yunfei Luo","doi":"10.1016/j.surfcoat.2025.132489","DOIUrl":"10.1016/j.surfcoat.2025.132489","url":null,"abstract":"<div><div>Marine engineering facilities are perpetually exposed to the harsh corrosive conditions of high salinity and humidity, where traditional corrosion resistance technologies often grapple with the challenge of limited energy supply. This study innovatively integrates bionic super-slippery surface technology with magnetofluid power generation to develop a novel self-powered corrosion resistance system. By employing laser texture processing to construct hierarchical microstructures on metal substrates and infusing them with lubricating fluids, a super-slippery surface with a contact angle exceeding 150° and a sliding angle below 3° was successfully fabricated. This surface demonstrates exceptional magnetofluid repulsion properties, significantly reducing residual liquid retention compared to conventional surfaces, thereby effectively addressing the energy loss issues caused by solid/liquid adhesion in traditional magnetofluid power generation. When applied to marine buoy corrosion resistance, the super-slippery surface leverages its low-adhesion to harness wave motion, driving continuous magnetofluid power generation to supply a stable current for cathodic protection systems. The generated current maintains the metal surface at a lower potential, reducing the corrosion rate by over 50 %. This research not only pioneers a new application pathway for super-slippery surfaces in the energy sector but also offers an innovative solution for marine energy exploitation and the protection of metal materials in marine environments.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132489"},"PeriodicalIF":5.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632930","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":"Laser texturing of AA2024 alloy: A simplified approach to improve corrosion resistance and achieve superhydrophobicity","authors":"Lis Geraldine Zschach ,&nbsp;Flavio Soldera ,&nbsp;Mateusz Marzec ,&nbsp;Krystian Sokołowski ,&nbsp;Marcelo Sallese ,&nbsp;Andrés Fabián Lasagni ,&nbsp;Robert Baumann","doi":"10.1016/j.surfcoat.2025.132487","DOIUrl":"10.1016/j.surfcoat.2025.132487","url":null,"abstract":"<div><div>Despite its susceptibility to corrosion, AA2024 alloy is extensively used in the aerospace industry due to its favourable mechanical properties. Conventional corrosion protection methods frequently rely on hazardous chemicals and complex multi-step processes, which limits their sustainability and scalability. This study focuses on the development of an environmentally friendly, simplified laser-based method that structures surfaces in a single scan, producing line-like microstructures that achieve superhydrophobicity. The surfaces present static water contact angles of up to 160° and roll-off angles below 5°. The laser treatment results in the creation of a thicker Al₂O₃ oxide layer on the surfaces, as evidenced by FIB-STEM images and the chemical characterization through XPS analysis. Consequently, the treated surfaces exhibit a notable enhancement in polarization resistance, rising from 23.6 kΩ cm² to 159.5 kΩ cm². This study provides insights into the viability of a novel, simple, laser-based approach for corrosion protection that exhibits additional wetting properties.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132487"},"PeriodicalIF":5.3,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656716","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":"Cold gas spraying of titanium on stainless steel to enhance corrosion protection inside proton exchange membrane water electrolyzers","authors":"Tim Sievert ,&nbsp;Sarah Zerressen ,&nbsp;Martin Bram ,&nbsp;Andreas Glüsen ,&nbsp;Klaus Bender ,&nbsp;Olivier Guillon ,&nbsp;Robert Vaßen","doi":"10.1016/j.surfcoat.2025.132486","DOIUrl":"10.1016/j.surfcoat.2025.132486","url":null,"abstract":"<div><div>In order to meet society's increasing energy needs and at the same time reduce the dependence on fossil fuels, it is essential to expand the production of renewable energies. However, a particular challenge of such energies is the discrepancy between energy production and demand. To bridge this gap, methods are needed to store the energy generated. One possibility is the production of green hydrogen by means of Proton Exchange Membrane Water Electrolysis (PEMWE), which can later be used to generate electricity. Consequently, it is crucial to develop cost-effective and resource-conserving manufacturing methods for electrolyzer stacks. In this study, we compare a conventionally used porous transport layer (PTL) on the anode side, which consists of a titanium felt, with a new type of PTL made out of a stainless steel expanded metal coated with titanium. Cold gas spraying (CGS) was selected as the coating process, which, like the production of expanded metals, is highly scalable. In addition, cold gas spraying has the advantage that the deposition can take place under normal atmospheric conditions, as comparatively low gas temperatures prevent titanium from undergoing any phase changes. This study shows that it is possible to coat 130 μm thin expanded metals without deformation or blockage. The microstructure was analyzed using scanning electron microscopy (SEM) and the phase composition was determined through X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS). The performance of different PTLs was compared by incorporating them into a proton exchange membrane (PEM) electrolyzer test cell. The newly fabricated PTL reached a current density of 2.6 A/cm² at 2 V, which is only slightly lower than the benchmark value, reached with a full-body titanium felt, of 2.9 A/cm². Compared to the full-body titanium felt, our new titanium-coated stainless steel-based PTL can reduce the amount of titanium needed by 68 %.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132486"},"PeriodicalIF":5.3,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656803","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":"Superior CMAS corrosion resistance of high-entropy rare-earth disilicate environmental barrier coating for SiC coated C/C composites","authors":"Guohui Chen ,&nbsp;Yanqin Fu ,&nbsp;Yulei Zhang ,&nbsp;Jian Zhang ,&nbsp;Jing’an Kong ,&nbsp;Wenhan Gai","doi":"10.1016/j.surfcoat.2025.132482","DOIUrl":"10.1016/j.surfcoat.2025.132482","url":null,"abstract":"<div><div>High-entropy rare-earth silicates are promising candidate materials for enhanced calcium‑magnesium-aluminosilicate (CMAS) resistance as next-generation environmental barrier coatings (EBCs). In this study, CMAS corrosion behaviors of plasma-sprayed high-entropy disilicate (Yb_0.2Lu_0.2Er_0.2Tm_0.2Sc_0.2)₂Si₂O₇ ((5RE_0.2)₂Si₂O₇) and Yb₂Si₂O₇ coatings were comparatively investigated at 1500 °C, to clarify the effect of high-entropy engineering on enhancing the CMAS corrosion resistance. After corrosion at 1500 °C for 1 h, the corrosion layer thickness of the (5RE_0.2)₂Si₂O₇ coating was 50 ± 12 μm, while that of the Yb₂Si₂O₇ coating reached 90 ± 15 μm. When the corrosion time was extended to 20 h, the Yb₂Si₂O₇ coating completely failed, but the (5RE_0.2)₂Si₂O₇ coating still maintained protective effect. The (5RE_0.2)₂Si₂O₇ coating exhibited superior corrosion resistance compared with the Yb₂Si₂O₇ coating, primarily attributed to the sluggish diffusion effect of high-entropy materials and reduced average rare-earth ion radius. A dense reaction layer interlaced with apatite and garnet was formed, effectively limiting the further penetration of CMAS. This work provides valuable insights for designing high-entropy coatings with exceptional anti-CMAS corrosion performance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132482"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597000","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":"Strengthening mechanisms of laser cladded CoCrFeNiSnx composite coatings: Microstructure and tribological properties","authors":"Jing-Jing Niu ,&nbsp;Pei-Pei Zhang ,&nbsp;Xiu-Bo Liu ,&nbsp;Zhi-Wen Wang ,&nbsp;Hai-Bin Zhou ,&nbsp;Yuan Meng ,&nbsp;Dong-Sheng Wang ,&nbsp;Xin-Gong Li","doi":"10.1016/j.surfcoat.2025.132484","DOIUrl":"10.1016/j.surfcoat.2025.132484","url":null,"abstract":"<div><div>In order to demonstrate the feasibility of Sn to improve tribological properties, CoCrFeNiSn_x (x = 0, 0.5, 0.75, 1, x values are molar ratios) high-entropy alloy composite coatings were prepared separately by laser cladding technique and their microstructures and wear behavior were investigated at room temperature (25 °C) and 600 °C. The relevant results showed that all the coatings consist of face-centered cubic (FCC) solid solution and Ni₃Sn₂ phase. The microhardness of the coatings gradually increased with increasing Sn content to 787.69 HV_0.5. High hardness, high work-hardening capacity, fine-grain strengthening of Ni₃Sn₂ as a heterogeneous nucleation point and blocking effect of Sn on dislocation movements. These enhancement behaviors acted synergistically to give the CoCrFeNiSn₁ coating the best tribological properties, with good wear resistance (2.5 × 10⁻⁶ mm³ / N·m) at room temperature, which was reduced by 89.49 % comparison with Sn-free coating. At 600 °C, a highly dense oxide film consisting of SnO₂, CoO and NiO oxides and a friction film reconstructed from Cr₂O₃ acted synergistically on surface of the coating, reducing the wear rate due to oxidative wear by 63.52 % compared to the substrate. This study was expected to offer some data support for the application of Q235 steel in wear-critical areas.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132484"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597001","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 self-lubricating composite coating on 6061 aluminum alloy surface with an intermediate anodised layer","authors":"Lei Zhu ,&nbsp;Wei Gao ,&nbsp;Yuxin Wang","doi":"10.1016/j.surfcoat.2025.132483","DOIUrl":"10.1016/j.surfcoat.2025.132483","url":null,"abstract":"<div><div>A self-lubricating AAO-Cu/Ni-P composite coating was deposited on the surface of 6061 aluminum alloy. An anodized intermediate layer (AAO) was introduced to enhance the adhesion and wear resistance of the coating. The microstructure, element distribution, and properties of the composite coating were comprehensively analyzed and contrasted with those of the traditional Ni-P coating pretreated by zinc immersion and the AAO/Ni-P coating. The outcomes indicated that the bonding strength of both the AAO/Ni-P and AAO-Cu/Ni-P coatings was notably improved compared to the traditional Ni-P coating. Unlike the AAO/Ni-P coating, the AAO-Cu/Ni-P coating displayed a significant enhancement in friction resistance due to its self-lubricating properties. Consequently, the friction coefficient was reduced by approximately 42.9 % and the volume wear decreased by 86.7 %. This research provides valuable insights into the friction and wear mechanisms of AAO-Cu/Ni-P composite coatings, offering technical support for the development of high-performance aluminum alloys.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132483"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589114","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}