Surface & Coatings Technology最新文献

Improving oil lubrication effectiveness of Ti-Ti tribopair by thermal oxidation 热氧化法提高Ti-Ti摩擦副的油润滑效果

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-30 DOI: 10.1016/j.surfcoat.2025.132346

Yong Sun , Richard Bailey , Jin Zhang , Y. Lian , Xiulin Ji

{"title":"Improving oil lubrication effectiveness of Ti-Ti tribopair by thermal oxidation","authors":"Yong Sun , Richard Bailey , Jin Zhang , Y. Lian , Xiulin Ji","doi":"10.1016/j.surfcoat.2025.132346","DOIUrl":"10.1016/j.surfcoat.2025.132346","url":null,"abstract":"<div><div>Titanium and its alloys are notorious for their poor tribological properties under sliding contact motions. They are also well known to be difficult to lubricate. Conventional lubricants such as engine oils fail to lubricate titanium effectively. Coating and thin film technologies have been shown to be effective in enhancing the tribological properties of titanium, particularly under dry sliding conditions. However, there have been limited studies on the effect of tribological coatings in improving the lubrication behavior of titanium tribopairs. In this study, thermal oxidation (TO) was used to produce an oxide layer and an oxygen diffusion zone on commercially pure titanium (CP-Ti), and the oil lubrication behavior of several treated and untreated Ti-on-Ti tribopairs were studied and compared under boundary lubricated reciprocating ball-on-disc sliding conditions. These include untreated Ti-on-untreated Ti (Ti-Ti) pair, treated Ti-on-treated Ti (TO-TO) pair, and untreated Ti-on-treated Ti (Ti-TO and TO-Ti) pairs. The results show that the engine oil indeed failed to lubricate the Ti-Ti tribopair, which experienced high and unstable friction with large amounts of wear from the contacting bodies. Thermally oxidizing both contacting bodies was very effective in improving the lubricity of the TO-TO tribopair, resulting in low and smooth friction and much reduced wear rates by 3 orders of magnitude. The oil lubrication characteristics of the TO-TO tribopair was similar to that of steel-steel tribopair. Thus, after thermal oxidation treatment, titanium can be lubricated effectively by the conventional oil lubricant. The friction and wear mechanisms and the beneficial effects of thermal oxidation in maintaining the boundary film under oil lubrication are discussed in the paper.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132346"},"PeriodicalIF":5.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185508","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

Study on the bonding strength and thermal shock resistance of thermal barrier coatings regulated by interface texture 界面织构对热障涂层结合强度和抗热震性能的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-29 DOI: 10.1016/j.surfcoat.2025.132342

Yongzhi Jing , Xiufang Cui , Guo Jin , Zhuo Chen , Yongchao Fang , Chong Zhang , Xinlin Li , Cheng Qin

{"title":"Study on the bonding strength and thermal shock resistance of thermal barrier coatings regulated by interface texture","authors":"Yongzhi Jing , Xiufang Cui , Guo Jin , Zhuo Chen , Yongchao Fang , Chong Zhang , Xinlin Li , Cheng Qin","doi":"10.1016/j.surfcoat.2025.132342","DOIUrl":"10.1016/j.surfcoat.2025.132342","url":null,"abstract":"<div><div>Regulating the microstructure of thermal barrier coating interfaces is an effective approach to enhance the thermal stability of the coatings. In this study, high-energy beam laser was used to texture the interface between the bond coat and the ceramic coat (circumferential type, Class C; Kagome type, Class K). The tensile bonding strength and strain capacity of the textured thermal barrier coatings were higher than those of the non-textured coatings. Texturing increases the unit contact area ratio (U) at the interface between the bond coat and the ceramic layer, which helps the coating resist thermal stress impact, reduces the spallation area ratio (Sar) and the spallation rate. Among them, Class C texture can effectively delay the rate of microcrack propagation, while Class K texture has a dual effect of circumferential restraint and suppression of inelastic deformation at the interface. The Kagome-type (Class K) textured coatings have a lower spallation rate than the circumferential-type (Class C) textured coatings. The coating with K2 interface texture exhibits the best thermal shock resistance, with a surface spallation area ratio of only 9.38 % after 120 thermal shock cycles; whereas the non-textured coating has a spallation area of about 13.7 % after the same number of thermal shock cycles. This research provides potential application value for the regulation of interface stability in thermal barrier coatings.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132342"},"PeriodicalIF":5.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177918","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

Microstructure, wear properties and corrosion resistance of thermal sprayed FeCoCrNiBSi high-entropy amorphous coatings 热喷涂feccrnibsi高熵非晶涂层的组织、磨损性能和耐蚀性

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-29 DOI: 10.1016/j.surfcoat.2025.132341

Liwei Hua , Jiangbo Cheng , Lin Xue , Peisong Song , Baosen Zhang

{"title":"Microstructure, wear properties and corrosion resistance of thermal sprayed FeCoCrNiBSi high-entropy amorphous coatings","authors":"Liwei Hua , Jiangbo Cheng , Lin Xue , Peisong Song , Baosen Zhang","doi":"10.1016/j.surfcoat.2025.132341","DOIUrl":"10.1016/j.surfcoat.2025.132341","url":null,"abstract":"<div><div>This work aims to prepare novel FeCoCrNiBSi high-entropy amorphous alloy coatings using atmospheric plasma spraying (APS) and high-velocity air-fuel (HVAF) spraying techniques. Further, the microstructure, mechanical characteristics, wear resistance, and corrosion resistance of the prepared coatings are comprehensively examined. The findings reveal that both APS and HVAF-sprayed coatings exhibit a typical laminar structure. The HVAF coating demonstrates significantly lower porosity than the APS coating. Brittle spalling is identified as the primary wear mechanism, with the HVAF coating showing approximately five times greater wear resistance than the APS coating. After 10 days of immersion in 3.5 wt% NaCl solution, the self-corrosion current density of the HVAF coating is found to be 1.15 μA/cm<sup>2</sup>, which is significantly lower than that of the APS coating (4.05 μA/cm<sup>2</sup>). Additionally, the charge transfer resistance of the HVAF coating is 43,387 Ω·cm<sup>2</sup>, which is approximately 3.5 times higher than that of the APS coating. The outstanding corrosion resistance of the HVAF coating can be ascribed to the formation of a stable passive layer on its surface. Overall, this study offers useful insights into the development of economical, high-performance coating materials and key technologies for preparing high-entropy amorphous alloys.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132341"},"PeriodicalIF":5.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170063","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

Influence of β-SiC phase contents on hardness and elastic modulus of multilayered diamond/β-SiC composite coatings β-SiC相含量对多层金刚石/β-SiC复合涂层硬度和弹性模量的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-29 DOI: 10.1016/j.surfcoat.2025.132340

Yueli Li , Haozhe Song , Haixin Li , Dingkun Li , Lusheng Liu , Jiayi Lan , Xiao Zhao , Nan Huang

{"title":"Influence of β-SiC phase contents on hardness and elastic modulus of multilayered diamond/β-SiC composite coatings","authors":"Yueli Li , Haozhe Song , Haixin Li , Dingkun Li , Lusheng Liu , Jiayi Lan , Xiao Zhao , Nan Huang","doi":"10.1016/j.surfcoat.2025.132340","DOIUrl":"10.1016/j.surfcoat.2025.132340","url":null,"abstract":"<div><div>Multilayered diamond/β-SiC composite coatings exhibit excellent mechanical properties, and the content of β-SiC phase plays a crucial role in determining the mechanical properties. In this work, a periodic structure of four-layer multilayered diamond/β-SiC composite coatings with different β-SiC phase contents were deposited on WC-Co substrates. The results demonstrate that the multilayered diamond/β-SiC composites with different β-SiC phase contents form a well-defined periodic multilayered structure, and the continuous growth of diamond grains is clearly observed. Raman spectroscopy, Rockwell hardness testing and nanoindentation analysis reveal that coatings with an optimized β-SiC phase content not only exhibit reduced residual stress (1.8 GPa) and enhanced adhesion (delamination rate reduced to 21.5 %), but also possess high hardness (80.6 GPa) and elastic modulus (1079.4 GPa). The influence of β-SiC phase on the coatings is primarily attributed to defect structures such as stacking faults (SFs) and twins (TBs) formed at the two-phase interface, which effectively hinders dislocation motion and thereby enhances the hardness and modulus of the coatings. Furthermore, the presence of SFs and TBs within the β-SiC phase improves its plastic deformation capability, enabling effective dissipation of strain energy induced by the diamond coating and reducing the overall residual stress of the coating. This study provides critical insights into the design and optimization of multilayered diamond/β-SiC composite coatings, facilitating their advanced application in cutting-edge tool coating technologies.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132340"},"PeriodicalIF":5.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177917","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

Simulation analysis of thermodynamic behavior of TBCs with irregular waveform interface 具有不规则波形界面的TBCs热力学行为的仿真分析

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-28 DOI: 10.1016/j.surfcoat.2025.132339

Zhimin Yao , Ranxing Leng , Yangyang Zhang , Xin Zhou , Jialong Liu

{"title":"Simulation analysis of thermodynamic behavior of TBCs with irregular waveform interface","authors":"Zhimin Yao , Ranxing Leng , Yangyang Zhang , Xin Zhou , Jialong Liu","doi":"10.1016/j.surfcoat.2025.132339","DOIUrl":"10.1016/j.surfcoat.2025.132339","url":null,"abstract":"<div><div>Thermal barrier coatings (TBCs) are essential for enhancing the performance of high-temperature components in applications like diesel engines and gas turbines. This study investigates the effect of interface morphology between the top coat (TC) and bond coat (BC) on the thermal and mechanical performance of TBCs through finite element analysis (FEA). The irregular interface is modeled using a sinusoidal curve with varying amplitudes and wavelengths. Results show that amplitude have a more significant influence on temperature distribution at the interface than wavelength. Reducing the amplitude from 1/4 to 1/14 decreases the temperature difference between the peak and valley from 35 °C to 5 °C (an 85.7 % reduction), while increasing the wavelength from 6 to 16 causes a smaller reduction, from 36 °C to 27 °C (25 %). Stress analysis reveals that higher amplitudes result in greater stress concentration at the peaks, increasing the risk of coating failure. In contrast, an increase in wave number reduces stress concentration. Significant stress changes occur in the Y-direction with amplitude variations. At an amplitude of 1/4, compressive stress is observed at the peak and tensile stress at the valley, with maximum tensile stress reaching 0.12 GPa, increasing the likelihood of delamination. As amplitude decreases to 1/14, stress inversion occurs, with tensile stress at the peaks, though at lower values. These findings offer insights into optimizing the spraying process and TBC design to improve durability and performance in high-temperature applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132339"},"PeriodicalIF":5.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178060","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 laser shock peening pretreatment on the microstructure and wear resistance of plasma nitrided TC4 titanium alloy 激光冲击强化预处理对等离子体氮化TC4钛合金组织及耐磨性的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-28 DOI: 10.1016/j.surfcoat.2025.132337

Chu Li, Junming Luo, Zhijing Zhao, Jilin Xu

{"title":"Effect of laser shock peening pretreatment on the microstructure and wear resistance of plasma nitrided TC4 titanium alloy","authors":"Chu Li, Junming Luo, Zhijing Zhao, Jilin Xu","doi":"10.1016/j.surfcoat.2025.132337","DOIUrl":"10.1016/j.surfcoat.2025.132337","url":null,"abstract":"<div><div>Laser shock peening (LSP) was adopted as the pretreatment process to study the effect of LSP on the microstructure and wear resistance of plasma nitrided (PN) TC4 titanium alloy. X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), microhardness tester and ball-on-disk wear tester were employed to investigate the microstructure and wear resistance of plasma nitrided TC4 alloy coupled with LSP processing. After the LSP treatment, the α-Ti diffraction peaks on the sample surface were broadened, the average grain size of TC4 titanium alloy was reduced, and the dislocated walls and nanograins were detected in the 2LSP sample through TEM. In addition, the LSP pretreatment has an obvious promotion effect on the nitriding of TC4 titanium alloy. Compared with the Sub + PN sample, the 2LSP + PN sample has denser nitrides on the surface, the overall thickness of nitrided layer is enhanced by 141 %, and the microhardness is enhanced by 23.6 %. Additionally, the coefficient ofwear, the width of wear trace, and the wear rate are reduced by 23.1 %, 21.6 %, and 65.1 %, respectively, reflecting better wear resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132337"},"PeriodicalIF":5.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177919","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

Process and characterization of conformal coating by plasma electrolytic oxidation on additively manufactured Ti-6Al-4V 增材制备Ti-6Al-4V保形涂层的等离子体电解氧化工艺及表征

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-28 DOI: 10.1016/j.surfcoat.2025.132338

Yee Ng, Xian Yi Tan, Tzee Luai Meng, Hongfei Liu

{"title":"Process and characterization of conformal coating by plasma electrolytic oxidation on additively manufactured Ti-6Al-4V","authors":"Yee Ng, Xian Yi Tan, Tzee Luai Meng, Hongfei Liu","doi":"10.1016/j.surfcoat.2025.132338","DOIUrl":"10.1016/j.surfcoat.2025.132338","url":null,"abstract":"<div><div>Protective coating was processed on additively manufactured (AM) Ti-6Al-4V coupons, with and without mechanical grinding, by plasma electrolytic oxidation (PEO) in an aqueous electrolyte mixture of NaAlO<sub>2</sub> (10 g/L) and Na<sub>3</sub>PO<sub>4</sub> (1.0 g/L) using a bipolar, current-controlled mode. By varying the anode-to-cathode charge-quantity ratio (<em>R</em> = 1.0 and 0.6) and the current ramping rate (<em>R</em><sub>c</sub> = 0.20 and 0.03 A/s), while keeping both the anodic and cathodic current densities at ∼0.21 A/cm<sup>2</sup>, significantly differences in growth rate of the PEO coatings were observed, leading to coating thickness of 29 μm (in 39 min) and 48 μm (in 26 min) with energy consumptions of 0.17 and 0.06 kWh, respectively. In-situ voltage profile analysis attributed this behavior not only to anodization and plasma initiation at the initial stage but also to coating relaxation during the cathodic period of the PEO process. Chemical analysis indicated a higher phosphorus concentration near the coating-substrate interface compared to the near-surface regions. X-ray diffraction revealed that the coating was predominantly composed of crystalline Al<sub>2</sub>TiO<sub>5</sub> (> 98.0 wt%). Nanoindentation measurements on the cross-sections showed hardness increases of 30% and 15% relative to the AM Ti-6Al-4V alloy for <em>R</em> = 1.0 and 0.6, respectively. The microcrack-free PEO coating, particularly its conformal coating on adhered particles and sharp corners, along with the significantly enhanced hydrophobicity, offers promising potential for the post-AM protection of Ti-6Al-4V components with complex surface geometries.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132338"},"PeriodicalIF":5.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170065","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

Ultra-fast laser modification of LaYbZrCeO7 thermal barrier coating surface and its hydrophobic behavior LaYbZrCeO7热障涂层表面的超快激光改性及其疏水性

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-27 DOI: 10.1016/j.surfcoat.2025.132328

Ziyu Chen , Yixin Xiao , Yuancheng Li , Haizhong Zheng , Guifa Li , Yongxiang Geng , Peifeng Zhou , Xin Wang

{"title":"Ultra-fast laser modification of LaYbZrCeO7 thermal barrier coating surface and its hydrophobic behavior","authors":"Ziyu Chen , Yixin Xiao , Yuancheng Li , Haizhong Zheng , Guifa Li , Yongxiang Geng , Peifeng Zhou , Xin Wang","doi":"10.1016/j.surfcoat.2025.132328","DOIUrl":"10.1016/j.surfcoat.2025.132328","url":null,"abstract":"<div><div>Hydrophobic surfaces are pivotal for self-cleaning, anti-icing, and corrosion resistance. Developing hydrophobic LaYbZrCeO<sub>7</sub> thermal barrier coating (TBC) offers an effective strategy to mitigate adhesion and corrosion induced by molten CMAS. In this paper, a periodic tip array with an average diameter of 100 μm and height of 45 μm was fabricated on LaYbZrCeO<sub>7</sub> TBC using femtosecond laser processing. Compared to the original coating, the periodic tip array increased non-polar C<img>C bonds by 14.35 % and decreased polar C-O-C, O-C=O, and -OH bonds by 7.26 %, 7.09 %, and 19.66 %, respectively, thereby reducing the surface polarity. Additionally, droplets form a “solid-gas-liquid” three-phase contact with the periodic tip array, reducing solid-liquid interaction and enhancing hydrophobicity. The average contact angles on the LaYbZrCeO<sub>7</sub> tip array and original coating were 145.2° and 58.4°, respectively, demonstrating the array's hydrophobicity. In addition, the contact angle between the periodic tip array and molten CMAS is 59.6°, which is significantly higher than the original coating's 19.6°.These results offer novel insights into enhancing the resistance of LaYbZrCeO<sub>7</sub> TBC against adhesion and corrosion from molten CMAS.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132328"},"PeriodicalIF":5.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154986","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

Rapid deposition of superhydrophobic organosilicon films on glass via DBD plasma jet-enhanced CVD for self-cleaning and optical filtering applications 利用DBD等离子体射流增强CVD技术在玻璃上快速沉积超疏水有机硅薄膜，用于自清洁和光学滤波

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-27 DOI: 10.1016/j.surfcoat.2025.132260

Shayan Bayki, Soham Mujumdar

{"title":"Rapid deposition of superhydrophobic organosilicon films on glass via DBD plasma jet-enhanced CVD for self-cleaning and optical filtering applications","authors":"Shayan Bayki, Soham Mujumdar","doi":"10.1016/j.surfcoat.2025.132260","DOIUrl":"10.1016/j.surfcoat.2025.132260","url":null,"abstract":"<div><div>Superhydrophobic surfaces, known for their exceptional water repellency, exhibit remarkable self-cleaning properties and resistance to contamination and corrosion. Dielectric barrier discharge (DBD) plasma jet, a type of atmospheric pressure plasma source, has emerged as a highly efficient tool for plasma-enhanced chemical vapor deposition (CVD) processes used in the fabrication of superhydrophobic surfaces. This approach offers key advantages, including low power consumption, high concentrations of active species, rapid processing, and operation under ambient conditions. This study explores the deposition of a superhydrophobic organosilicon film on a glass substrate using DBD plasma jet-enhanced CVD, with tetramethylsilane (TMS) as the precursor. The deposition process achieves an exceptionally high deposition rate up to <span><math><mrow><mn>2</mn><mo>.</mo><mn>6</mn><mspace></mspace><mi>μ</mi></mrow></math></span>m/min. Wettability analysis reveals a significant transformation in surface properties post-deposition, with the water contact angle (WCA) increasing from 25° to above <span><math><mrow><mn>167</mn></mrow></math></span>° and the oil contact angle decreasing from 33° to below 7°, confirming the film’s superhydrophobic and superoleophilic behavior. As a result, the organosilicon-coated glass surface shows excellent self-cleaning properties, with 98% of dust removal upon impingement of water droplets. The light-filtering analysis shows a 78% transmittance of the superhydrophobic coating in the visible region after 45 s of deposition. The film exhibits excellent durability against harsh environmental conditions, as demonstrated by 20 min exposure to water jet (flow rate of 50 l/h), air jet (pressure of 8 bar), and high temperature (200°). This work paves the way for the rapid deposition of superhydrophobic coatings for anti-fogging, anti-dusting, oil-water separation, anti-icing, and light-filtering applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132260"},"PeriodicalIF":5.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170062","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

Microstructure and corrosion resistance of cast iron surfaces by cold spraying Al and Al/Ni coatings 冷喷涂Al和Al/Ni涂层对铸铁表面组织和耐蚀性的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-27 DOI: 10.1016/j.surfcoat.2025.132327

Lei Shi, Lulu Ji, Ailong Jiang, Yahui Han, Qihua Wu

{"title":"Microstructure and corrosion resistance of cast iron surfaces by cold spraying Al and Al/Ni coatings","authors":"Lei Shi, Lulu Ji, Ailong Jiang, Yahui Han, Qihua Wu","doi":"10.1016/j.surfcoat.2025.132327","DOIUrl":"10.1016/j.surfcoat.2025.132327","url":null,"abstract":"<div><div>To improve the corrosion resistance of combustion chamber components of alternative fuel internal combustion engines, an effective method to prepare dense anticorrosive coating on cast iron surfaces by cold spraying technology is proposed. The effect of process parameters on microstructure evolution and corrosion properties of cold-sprayed coatings were studied in detail. The coatings consist of Al, Al<sub>1.1</sub>Ni<sub>0.9</sub>, and NiAl<sub>2</sub>O phases. The average grain size for Al and Al-Ni-Al coatings was 9.5 μm and 6.5 μm, respectively. In 3.5%wt% NaCl solution, the corrosion current density of Al spray coating (7.06 × 10<sup>−7</sup> A/cm<sup>2</sup>) was one order of magnitude lower than that of the substrate (5.47 × 10<sup>−6</sup> A/cm<sup>2</sup>), and the corrosion rate of Al spray coating (23.9 μm/year) was 62 % lower than that of the substrate (63.6 μm/year). In the immersion corrosion, the corrosion resistance of Al-Ni-Al composite coating was the best. The results show that the corrosion products after immersion corrosion were mainly Al<sub>2</sub>O<sub>3</sub>/Al and Al(OH)<sub>3</sub>, and Ni was not corroded. The corrosion mechanism of the coating was local pitting corrosion in electrochemical corrosion.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132327"},"PeriodicalIF":5.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185507","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