Surface & Coatings Technology最新文献_第2页

Strengthening mechanisms of laser cladded CoCrFeNiSnx composite coatings: Microstructure and tribological properties 激光熔覆CoCrFeNiSnx复合涂层的强化机理：显微组织和摩擦学性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-10 DOI: 10.1016/j.surfcoat.2025.132484

Jing-Jing Niu , Pei-Pei Zhang , Xiu-Bo Liu , Zhi-Wen Wang , Hai-Bin Zhou , Yuan Meng , Dong-Sheng Wang , Xin-Gong Li

{"title":"Strengthening mechanisms of laser cladded CoCrFeNiSnx composite coatings: Microstructure and tribological properties","authors":"Jing-Jing Niu , Pei-Pei Zhang , Xiu-Bo Liu , Zhi-Wen Wang , Hai-Bin Zhou , Yuan Meng , Dong-Sheng Wang , 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<sub>x</sub> (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 Ni<sub>3</sub>Sn<sub>2</sub> phase. The microhardness of the coatings gradually increased with increasing Sn content to 787.69 HV<sub>0.5</sub>. High hardness, high work-hardening capacity, fine-grain strengthening of Ni<sub>3</sub>Sn<sub>2</sub> as a heterogeneous nucleation point and blocking effect of Sn on dislocation movements. These enhancement behaviors acted synergistically to give the CoCrFeNiSn<sub>1</sub> coating the best tribological properties, with good wear resistance (2.5 × 10<sup>−6</sup> mm<sup>3</sup> / 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 SnO<sub>2</sub>, CoO and NiO oxides and a friction film reconstructed from Cr<sub>2</sub>O<sub>3</sub> 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}

引用次数: 0

A self-lubricating composite coating on 6061 aluminum alloy surface with an intermediate anodised layer 一种6061铝合金表面具有中间阳极氧化层的自润滑复合涂层

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-10 DOI: 10.1016/j.surfcoat.2025.132483

Lei Zhu , Wei Gao , Yuxin Wang

引用次数: 0

Preparation of robust fluorine-free superhydrophobic coating using fly ash and its self-cleaning, anti-icing and anti-corrosion properties 粉煤灰制备坚固无氟超疏水涂料及其自洁、防冰、防腐性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-09 DOI: 10.1016/j.surfcoat.2025.132480

Weitao Song, Huiping Song, Zhenlian Fan, Shuyan Cheng, Zhengjun Feng

{"title":"Preparation of robust fluorine-free superhydrophobic coating using fly ash and its self-cleaning, anti-icing and anti-corrosion properties","authors":"Weitao Song, Huiping Song, Zhenlian Fan, Shuyan Cheng, Zhengjun Feng","doi":"10.1016/j.surfcoat.2025.132480","DOIUrl":"10.1016/j.surfcoat.2025.132480","url":null,"abstract":"<div><div>Superhydrophobic coatings have attracted extensive interest from researchers in recent years. An important future development direction involves utilizing zero-cost solid waste materials as structural components to create superhydrophobic coatings. In this article, fly ash(FA), a common solid waste, was used as the main material, epoxy resin (ER) and polydimethylsiloxane (PDMS) were used as the main film-forming substances. A multifunctional FA-superhydrophobic coating ER/FA@PDMS/SiO<sub>2</sub> was prepared by spraying method. FA-superhydrophobic coating exhibited a water contact angle (WCA) of 156.4° ± 0.8° and water sliding angle (WSA) of 4.5° ± 0.1°. ER/FA primer has an irregular porous structure, and the PDMS/SiO<sub>2</sub> penetrate into the porous structure. The porous ER/FA coating can store PDMS and SiO<sub>2</sub>, and the FA superhydrophobic coating has similar rough structure and low surface energy inside and on the surface. FA-superhydrophobic coating have strong mechanical stability, after the surface coating is destroyed, the internal structure of the coating can still maintain excellent performance. The corrosion current density of FA-superhydrophobic coating is about 9.392 × 10<sup>−7</sup> A/cm<sup>2</sup>, which is one order of magnitude lower than ER/FA coating. FA-superhydrophobic coating can delay icing by about 121.55 % under extremely cold conditions. This simple and low-cost superhydrophobic coating has great application value in self-cleaning, anti-icing and anti-corrosion.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132480"},"PeriodicalIF":5.3,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596999","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}

引用次数: 0

Effect of Nb content on microstructure and tribological properties of AlCrMoNbxNi high-entropy alloy coatings Nb含量对AlCrMoNbxNi高熵合金涂层组织和摩擦学性能的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-09 DOI: 10.1016/j.surfcoat.2025.132477

Wenchen Zhuang , Suhui Meng , Tuo Xu , Zheng Ma , Li Jiang , Tongmin Wang , Zhiqiang Cao

{"title":"Effect of Nb content on microstructure and tribological properties of AlCrMoNbxNi high-entropy alloy coatings","authors":"Wenchen Zhuang , Suhui Meng , Tuo Xu , Zheng Ma , Li Jiang , Tongmin Wang , Zhiqiang Cao","doi":"10.1016/j.surfcoat.2025.132477","DOIUrl":"10.1016/j.surfcoat.2025.132477","url":null,"abstract":"<div><div>For the surface modification of M2 high-speed steel, incorporating Laves phases into high-entropy alloy (HEA) coatings offers an innovative strategy to enhance hardness and wear resistance. In this study, a series of AlCrMoNb<sub>x</sub>Ni (x = 0, 0.25, 0.5, 0.75, and 1) HEA coatings were successfully fabricated via laser cladding. The effects of Nb content on microstructural evolution, mechanical properties, and tribological performance were systematically investigated. The addition of Nb promotes the precipitation of an Fe<sub>2</sub>Nb-type hexagonal close-packed (HCP) Laves phase, leading to a coating microstructure dominated by body-centered cubic (BCC), B2, and Laves phases. Among the investigated coatings, the Nb0.25 coating exhibited the best tribological performance, with the lowest friction coefficient of 0.63 and wear rate of 1.49 × 10<sup>−5</sup> mm<sup>3</sup>/N·m. Its wear resistance was approximately 2.21 times greater than that of the M2 steel substrate. The superior performance of the Nb0.25 coating originates from four key factors: First, the elliptical and needle-shaped Laves phases formed in the coating are uniformly dispersed within the BCC matrix, collectively contributing to a substantial precipitation strengthening effect. Second, the optimal ratio of Laves phases to the BCC matrix allows the coating to achieve a desirable balance between strength and ductility. Additionally, a portion of Nb is dissolved into the BCC matrix, contributing to solid-solution strengthening. Finally, the primary wear mechanism of the coating is oxidative wear, and the oxide film formed during friction effectively minimizes material loss.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132477"},"PeriodicalIF":5.3,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633978","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}

引用次数: 0

Impact of surface laser treatment on the high-frequent cyclic ablation of vermicular graphite cast iron 表面激光处理对蠕墨铸铁高频循环烧蚀的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-09 DOI: 10.1016/j.surfcoat.2025.132479

Yueling Zhou, Lei Liu, Yuhan Deng, Wei Feng, Xuechao Wang, Lefan Yang, Xin Du, Ping Wang, Zhong Yang, Yongchun Guo

{"title":"Impact of surface laser treatment on the high-frequent cyclic ablation of vermicular graphite cast iron","authors":"Yueling Zhou, Lei Liu, Yuhan Deng, Wei Feng, Xuechao Wang, Lefan Yang, Xin Du, Ping Wang, Zhong Yang, Yongchun Guo","doi":"10.1016/j.surfcoat.2025.132479","DOIUrl":"10.1016/j.surfcoat.2025.132479","url":null,"abstract":"<div><div>The cylinder head of a high-power diesel engine is often subjected to a harsh cyclic ablative environment. Vermicular graphite cast iron exhibits commendable mechanical properties and high-temperature performance. However, the occurrence of thermal cracking can lead to a deterioration in cyclic ablative resistance. Surface laser treatment can enhance the thermal stability of the material, which exists potential to mitigate such failures. To investigate the impact of surface laser treatment on the high-frequent cyclic ablation of vermicular graphite cast iron, we prepared surface-modified vermicular graphite cast iron by applying varying laser power to its surface. The results indicated that different microstructures were observed on the laser-treated surface of vermicular graphite cast iron. Vermicular cast iron subjected to laser treatment at power levels of 300 W and 500 W demonstrates an increase in hardness, which can be attributed to the formation of fine ledeburite and martensite on its surface. The 500 W treated vermicular graphite cast iron showed the best ablation resistance. The mass and line ablation rates are −0.026 mg/s and −0.12 μm/s, respectively. The damage to the matrix is less significant compared to that of other materials. The reason lies in its small and uniform surface structure, which can mitigate thermal stress damage during the initial stages of ablation and enhance its oxidation resistance. By reducing the thickness of the oxide layer, the thermal conductivity of the surface is improved, resulting in a decrease in surface temperature and an enhancement in the material's resistance to high-frequent cyclic ablation.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132479"},"PeriodicalIF":5.3,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589153","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}

引用次数: 0

Formation of corrosion-resistant coatings on cast AZ91D magnesium alloy using pulse electrolysis and the importance of coating morphology 脉冲电解铸造AZ91D镁合金耐腐蚀镀层的形成及镀层形貌的重要性

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-09 DOI: 10.1016/j.surfcoat.2025.132473

Zheng Shao, Masashi Nishimoto, Izumi Muto

{"title":"Formation of corrosion-resistant coatings on cast AZ91D magnesium alloy using pulse electrolysis and the importance of coating morphology","authors":"Zheng Shao, Masashi Nishimoto, Izumi Muto","doi":"10.1016/j.surfcoat.2025.132473","DOIUrl":"10.1016/j.surfcoat.2025.132473","url":null,"abstract":"<div><div>Pulse electrolysis was conducted in a 3 M KOH-0.21 M Na<sub>3</sub>PO<sub>4</sub>-0.15 M Al(NO<sub>3</sub>)<sub>3</sub>-0.6 M KF solution to form a corrosion-resistant coating on a cast AZ91D magnesium alloy. We investigated the effect of the pulse repetition frequency (2, 5, and 10 kHz) on the chemical composition, morphology, and corrosion performance of the coating. While the chemical compositions of the coatings were similar, the coating morphology varied with the repetition frequency. The coating on the 5 kHz specimen exhibited a thickness of up to approximately 46 μm without delamination, whereas the coatings on the 2 and 10 kHz specimens were thinner. The coating on the 10 kHz specimen contained many cracks, and delamination from the alloy substrate was observed. In 0.01 M NaCl (pH 8.0), the open circuit potential of the 5 kHz specimen remained at approximately −0.2 V, even though that of the 2 and 10 kHz specimens oscillated at approximately −1.4 V. Potentiodynamic polarization tests revealed that the coating on the 5 kHz specimen inhibited both anodic and cathodic reactions, exhibiting a passive state from approximately −0.5 V to 0.5 V. The superior corrosion resistance of the 5 kHz specimen was attributed to the greater coating thickness and the absence of delamination from the substrate.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132473"},"PeriodicalIF":5.3,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596997","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}

引用次数: 0

Sustainable corrosion protection of aluminium alloys using a bio-based carbohydrate inhibitor 生物基碳水化合物缓蚀剂对铝合金的可持续腐蚀保护

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-09 DOI: 10.1016/j.surfcoat.2025.132475

Bhavana Rikhari , B.E. Amitha Rani

{"title":"Sustainable corrosion protection of aluminium alloys using a bio-based carbohydrate inhibitor","authors":"Bhavana Rikhari , B.E. Amitha Rani","doi":"10.1016/j.surfcoat.2025.132475","DOIUrl":"10.1016/j.surfcoat.2025.132475","url":null,"abstract":"<div><div>AA 6061 aluminium alloy is valued for its high strength-to-weight ratio and corrosion resistance but remains vulnerable to localized attack in chloride-rich environments. This drives the demand for eco-friendly, non-toxic corrosion inhibitors. The synthesis of hexamethylene-1,6-bis(N-D-glucopyranosylamine) (HGA) was successfully accomplished, and its potential as a corrosion inhibitor for AA 6061 aluminium alloy was investigated in a 3.5 % NaCl environment. Initial evaluation involved immersion tests of the alloy in inhibitor-containing saline media. Comprehensive electrochemical characterization was performed using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques to assess the corrosion inhibition performance of HGA. To elucidate the interaction of HGA with the alloy surface, Attenuated Total Reflectance Infrared (ATR-IR) spectroscopy was employed, confirming the presence of functional groups in the protective inhibitor layer. Surface morphology analysis via Field Emission Scanning Electron Microscopy (FE-SEM) revealed a uniform protective film formation, while Energy Dispersive X-ray Spectroscopy (EDX) verified the elemental composition of the inhibitor and corrosion products. A significant reduction in corrosion current density, along with an enhanced polarization resistance of 75,730 Ω·cm<sup>2</sup>, demonstrated the superior corrosion resistance conferred by the HGA film compared to the untreated alloy. Notably, the HGA-coated surface maintained its impedance stability even after 168 h of continuous immersion in 3.5 % NaCl solution, indicating durable and sustained protection. These findings underscore the promise of HGA as a novel, eco-friendly corrosion inhibitor for aluminium alloys in aggressive chloride environments.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132475"},"PeriodicalIF":5.3,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623840","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}

引用次数: 0

Formation of the polycrystalline structure in the interdiffusion zone of a PtAl-coated third-generation SX superalloy ptal涂层第三代SX高温合金扩散区多晶结构的形成

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-09 DOI: 10.1016/j.surfcoat.2025.132478

Dong Sun, Yihang Li, Longfei Li, Song Lu, Weiwei Zheng, Qiang Feng

{"title":"Formation of the polycrystalline structure in the interdiffusion zone of a PtAl-coated third-generation SX superalloy","authors":"Dong Sun, Yihang Li, Longfei Li, Song Lu, Weiwei Zheng, Qiang Feng","doi":"10.1016/j.surfcoat.2025.132478","DOIUrl":"10.1016/j.surfcoat.2025.132478","url":null,"abstract":"<div><div>The polycrystalline structure of the interdiffusion zone (IDZ) significantly affects the mechanical properties of the PtAl-coated single crystal (SX) superalloys, while its formation mechanism has not been clarified yet. This study systematically investigated the formation of the polycrystalline structure in the IDZ of a PtAl-coated third-generation SX superalloy by analyzing the interdiffusion and microstructural evolution during the coating deposition process, which mainly consists of grit blasting, Pt electroplating, interdiffusion at 900 °C, and aluminizing. The results indicated that the polycrystalline structure in the IDZ was formed during interdiffusion between the Pt plating layer and the SX superalloy, and was determined by the diffusion rather than the grit blasting. Notably, the phase transformation from cuboidal γ/γ’ phases to Pt-rich γ<sub>1</sub>/γ’<sub>1</sub> phases with irregular shapes occurred in the IDZ during interdiffusion at 900 °C, and the phase boundaries and grain boundaries between the IDZ and the SX superalloy coincided. The formation of the polycrystalline IDZ was mainly attributed to the grain boundary (GB) migration induced by the phase transformation, similar to the discontinuous precipitation. Specifically, Pt diffused from the nano-crystalline Pt-plating layer to the SX superalloy mainly along the GBs, inducing the nucleation of Pt-rich γ<sub>1</sub>/γ’<sub>1</sub> phases at the GBs. Subsequently, γ<sub>1</sub>/γ’<sub>1</sub> phases grew in the direction of Pt diffusion, and the GBs migrated along the growth direction of γ<sub>1</sub>/γ’<sub>1</sub> phases concurrently. This study will be helpful for reducing the formation of the polycrystalline structure in the IDZ of the PtAl-coated SX superalloy.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132478"},"PeriodicalIF":5.3,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662633","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}

引用次数: 0

Ultrafast laser fabricated triple-scale micro/nano structured NdYbZr2O7 thermal barrier coatings with molten volcanic ash repellency 超快激光制备三尺度微纳结构NdYbZr2O7熔融火山灰拒热涂层

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-08 DOI: 10.1016/j.surfcoat.2025.132465

Min Luo , Yang Wu , Wei Shao , Qiang Jia , Xunxun Hu , Bangyang Zhou , Wenbo Zhi , Dingyong He

{"title":"Ultrafast laser fabricated triple-scale micro/nano structured NdYbZr2O7 thermal barrier coatings with molten volcanic ash repellency","authors":"Min Luo , Yang Wu , Wei Shao , Qiang Jia , Xunxun Hu , Bangyang Zhou , Wenbo Zhi , Dingyong He","doi":"10.1016/j.surfcoat.2025.132465","DOIUrl":"10.1016/j.surfcoat.2025.132465","url":null,"abstract":"<div><div>Thermal barrier coatings (TBCs) are extensively applied in the hot-section components of engines to enhance their high-temperature resistance. During service, these coatings often suffer from calcium‑magnesium-alumina-silicate (CMAS) corrosion. Inspired by the hydrophobic properties of lotus leaves, we employed ultrafast laser direct writing to fabricate a triple-scale micro-nano grid structure on the TBC surface, aiming to improve its resistance to molten CMAS infiltration. First, the triple-scale structures with varying laser scanning spacings (70, 80, and 90 μm) were fabricated on ceramic bulks. After 10 min of volcanic ash corrosion, the ceramic with a scanning spacing of 70 μm exhibits the largest contact angle (115°). Subsequently, a triple-scale micro-nano structure with a scanning spacing of 70 μm was prepared on the coating surface. Following 10 min of volcanic ash exposure, this structure demonstrates superior performance, with a larger contact angle (116°) and enhances resistance to CMAS penetration compared to the as-sprayed coating (105°). With the extension of corrosion time, the structured coating surface reacts with molten CMAS and forms a reaction layer composed of ZrO<sub>2</sub> and apatite phase, which inhibits further infiltration. The laser-ablated micro-nano structure increases surface roughness, resulting in a higher friction coefficient (0.280) compared to conventional coatings (0.214).</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132465"},"PeriodicalIF":5.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589117","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}

引用次数: 0

The microstructure of Cu-Cr composite coatings produced by detonation spraying and their behavior under arc erosion conditions 研究了爆轰喷涂Cu-Cr复合涂层的显微组织及其在电弧侵蚀条件下的性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-08 DOI: 10.1016/j.surfcoat.2025.132474

P.A. Riabinkina , I.S. Batraev , V.Yu. Ulianitsky , N.Yu. Cherkasova , V.S. Shikalov , K.A. Antropova , D.Yu. Babitsky , A.S. Trofimov , P. Chen , I.A. Bataev

{"title":"The microstructure of Cu-Cr composite coatings produced by detonation spraying and their behavior under arc erosion conditions","authors":"P.A. Riabinkina , I.S. Batraev , V.Yu. Ulianitsky , N.Yu. Cherkasova , V.S. Shikalov , K.A. Antropova , D.Yu. Babitsky , A.S. Trofimov , P. Chen , I.A. Bataev","doi":"10.1016/j.surfcoat.2025.132474","DOIUrl":"10.1016/j.surfcoat.2025.132474","url":null,"abstract":"<div><div>Cu-Cr composites are extensively used as electrical contacts in vacuum circuit breakers due to their favorable electrical and mechanical properties. In this study, Cu-Cr composite coatings were formed on copper substrates by detonation spraying. Powder mixtures with chromium content ranging from 25 to 67 wt% were employed for the spraying process, and a pure copper coating was also prepared as a reference material. The microstructure and composition of the coatings were characterized using optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) analysis. The performance of the coatings was assessed through arc erosion testing, and the post-test surface topography of the samples was analyzed via optical profilometry. TEM analysis revealed the presence of nanoscale copper oxides in the pure copper coatings and chromium oxides in the Cu-Cr coatings, respectively. The detonation-sprayed Cu-Cr coatings exhibited high hardness (240 ± 10 HV) and adhesive strength (45 ± 10 MPa), coupled with low porosity (< 1 %). The electrical conductivity of the coatings varied between 25 and 41 % IACS, depending on the chromium content. Notably, coatings with a chromium content of 33–43 wt% exhibited no surface protrusions after arc exposure, indicating superior resistance to arc-induced damage.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132474"},"PeriodicalIF":5.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656671","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}

引用次数: 0