Surface & Coatings Technology最新文献_第5页

Effects of stoichiometry and substrate temperature on the mechanical properties of (ZrxTa1−x)By films 化学计量学和衬底温度对（ZrxTa1−x）By薄膜力学性能的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-21 DOI: 10.1016/j.surfcoat.2025.132310

Yung-I Chen , Yu-Ting Ye , Li-Chun Chang , Ting-Kai Chang

{"title":"Effects of stoichiometry and substrate temperature on the mechanical properties of (ZrxTa1−x)By films","authors":"Yung-I Chen , Yu-Ting Ye , Li-Chun Chang , Ting-Kai Chang","doi":"10.1016/j.surfcoat.2025.132310","DOIUrl":"10.1016/j.surfcoat.2025.132310","url":null,"abstract":"<div><div>(Zr<sub><em>x</em></sub>Ta<sub>1−<em>x</em></sub>)B<sub><em>y</em></sub> films with various stoichiometric ratios (<em>y</em>) and Zr/(Zr + Ta) ratios (<em>x</em>) were fabricated through cosputtering by using ZrB<sub>2</sub> and Ta or TaB<sub>2</sub> targets. The crystallinity of the fabricated films changed from amorphous to nanocrystalline and then crystalline as the stoichiometric ratio was increased, with these changes accompanied by improvements in the films' mechanical properties. Moreover, the hardness of near-stoichiometric (Zr<sub><em>x</em></sub>Ta<sub>1−<em>x</em></sub>)B<sub><em>y</em></sub> films was enhanced to 36.6 GPa by increasing the substrate temperature to 400 °C during the deposition process. This process resulted in the crystal morphology changing from a nanoscale granular structure to a columnar structure. A Cr interlayer improved the adhesion of the aforementioned films to SUS304 stainless-steel substrates, and a soft CrN top layer enhanced the wear resistance of the (Zr<sub><em>x</em></sub>Ta<sub>1−<em>x</em></sub>)B<sub><em>y</em></sub>/Cr/SUS304 assembly.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132310"},"PeriodicalIF":5.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106015","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

Thermal stability and abrasion resistance of NiCoCrAlYTa/Al2O3 gradient abrasive coating for blade tips by vacuum infiltration sintering 真空渗烧NiCoCrAlYTa/Al2O3梯度磨料涂层的热稳定性和耐磨性

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-21 DOI: 10.1016/j.surfcoat.2025.132312

De Wang , Jun Wang , Gezhou Wang , Wenqin Wang , Huan Liu , Xiaofeng Xiao , Hua Li , Zheng Fan

{"title":"Thermal stability and abrasion resistance of NiCoCrAlYTa/Al2O3 gradient abrasive coating for blade tips by vacuum infiltration sintering","authors":"De Wang , Jun Wang , Gezhou Wang , Wenqin Wang , Huan Liu , Xiaofeng Xiao , Hua Li , Zheng Fan","doi":"10.1016/j.surfcoat.2025.132312","DOIUrl":"10.1016/j.surfcoat.2025.132312","url":null,"abstract":"<div><div>NiCoCrAlYTa/Al<sub>2</sub>O<sub>3</sub> gradient abrasive coatings with varying Al<sub>2</sub>O<sub>3</sub> contents were fabricated on single crystal superalloy via vacuum infiltration sintering for the protection of blade tips. The oxidation resistance, thermal shock resistance, and abrasion resistance of the coatings were investigated. The results showed that the abrasion rate of the coating was reduced by 33 % and the oxidation mass gain was decreased by 10.85 % through the incorporation of Al<sub>2</sub>O<sub>3</sub> particles. Additionally, the YAlO<sub>3</sub> compounds formed by the reaction between Al<sub>2</sub>O<sub>3</sub> particles and the NiCoCrAlYTa matrix suppressed intergranular crack propagation, resulting in a 61.15 % reduction in crack density and enhanced thermal shock resistance of the coating. These findings highlight the application potential of NiCoCrAlY/Al<sub>2</sub>O<sub>3</sub> gradient coatings in high-temperature sections of turbine engines.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132312"},"PeriodicalIF":5.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115643","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

Superhydrophobic and corrosion resistance behavior of Al-15Si-5Cu-5 Mg-2Mn alloy surface al - 15si - 5cu - 5mg - 2mn合金表面的超疏水和耐腐蚀行为

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-21 DOI: 10.1016/j.surfcoat.2025.132311

Mengjun Liu , Shouren Wang , Mingyang Du , Yang Li , Zhuang Zhang , Peining Li

{"title":"Superhydrophobic and corrosion resistance behavior of Al-15Si-5Cu-5 Mg-2Mn alloy surface","authors":"Mengjun Liu , Shouren Wang , Mingyang Du , Yang Li , Zhuang Zhang , Peining Li","doi":"10.1016/j.surfcoat.2025.132311","DOIUrl":"10.1016/j.surfcoat.2025.132311","url":null,"abstract":"<div><div>This study investigates the fabrication of superhydrophobic aluminum alloy surfaces via laser cladding and surface modification techniques, aiming to enhance corrosion resistance and wettability for broad industrial applications. This study employed laser cladding technology to achieve microstructural design in the Al-15Si-5Cu-5 Mg-2Mn alloy. The geometrical attributes of the precipitated phases of Al<img>Si alloys (PPAS) during the liquid-solid phase transition can be controlled by leveraging the non-equilibrium solidification features. Intermetallic compound skeletons with micro/nanocomposite structures can be constructed within the cladding layer. The material surface was successfully rendered superhydrophobic through the synergistic application of NaOH chemical etching and FAS-17 low-surface-energy modification. Specifically, chemical etching created nanoscale roughness on the surface of micrometer-sized intermetallic phases, thereby constructing a hierarchical micro/nanocomposite structure. Subsequent modification with FAS-17 further elevated the contact angle (CA) of the material surface to 158°. Moreover, electrochemical tests revealed that the modified material demonstrated markedly enhanced corrosion resistance relative to 6061 aluminum alloy. Notably, the corrosion resistance of PPAS itself and its orientation in the vertical direction play a key role in the realization of superhydrophobic properties. This research lays a solid foundation for the wider application of alloy materials.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132311"},"PeriodicalIF":5.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185506","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

Investigation of the influence of deposition time on morphology, crystallographic texture, and corrosion resistance of ZnO coatings on titanium substrates 沉积时间对钛基ZnO涂层形貌、晶体织构及耐蚀性影响的研究

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-21 DOI: 10.1016/j.surfcoat.2025.132309

Seyed Reza Torabianfard, Roohollah Jamaati, Hamed Jamshidi Aval

{"title":"Investigation of the influence of deposition time on morphology, crystallographic texture, and corrosion resistance of ZnO coatings on titanium substrates","authors":"Seyed Reza Torabianfard, Roohollah Jamaati, Hamed Jamshidi Aval","doi":"10.1016/j.surfcoat.2025.132309","DOIUrl":"10.1016/j.surfcoat.2025.132309","url":null,"abstract":"<div><div>This study examines the effect of deposition time on the microstructural evolution and functional performance of zinc oxide (ZnO) coatings on titanium substrates using electrophoretic deposition. Morphological analysis via scanning electron microscopy revealed a time-dependent transition from incomplete nucleation at 2.5 min, producing uneven flake-like structures, to a more uniform and compact coating at 5 min due to enhanced ion mobility and stable particle flux. With extended times (10–20 min), competitive crystal growth dominated, leading to coarse flakes with reduced packing density and increased interflake porosity. Crystallite size, determined using XRD and the Scherrer equation, increased from 34.1 nm to 62.4 nm with deposition time, reflecting enhanced crystal coalescence and orientation, particularly along the (0002) plane—a thermodynamically stable direction associated with improved corrosion resistance. Surface roughness peaked at 1.76 ± 0.39 μm for the 10-min sample, while coating thickness increased steadily from 4.56 ± 0.3 μm to 23.5 ± 0.4 μm. Wettability improved initially (contact angle 69.4° at 5 min) before declining due to morphological changes (contact angle 79.7° at 20 min). Electrochemical impedance spectroscopy and polarization tests identified the 5-min coating as optimal, exhibiting the lowest corrosion rate (2.103 ± 0.035 μm/year) and highest polarization resistance (2.06 × 10<sup>5</sup> ± 0.56 × 10<sup>5</sup> Ω·cm<sup>2</sup>) in PBS solution. These results demonstrate that deposition time fundamentally governs the nucleation–growth dynamics, microstructural texture, and electrochemical stability of ZnO coatings.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132309"},"PeriodicalIF":5.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123790","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

Effects of multifunction cavitation treatment during chemical conversion coating on compounds formed on AZ31 magnesium alloy surface and their electrochemical characteristics 化学转化涂层中多功能空化处理对AZ31镁合金表面形成的化合物及其电化学特性的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-21 DOI: 10.1016/j.surfcoat.2025.132308

Masataka Ijiri , Fumihiro Kato , Toshihiko Yoshimura , Isao Nakatsugawa , Yasumasa Chino , Shoichi Kikuchi

{"title":"Effects of multifunction cavitation treatment during chemical conversion coating on compounds formed on AZ31 magnesium alloy surface and their electrochemical characteristics","authors":"Masataka Ijiri , Fumihiro Kato , Toshihiko Yoshimura , Isao Nakatsugawa , Yasumasa Chino , Shoichi Kikuchi","doi":"10.1016/j.surfcoat.2025.132308","DOIUrl":"10.1016/j.surfcoat.2025.132308","url":null,"abstract":"<div><div>We investigated the electrochemical properties of compounds and chlorides in the films formed on the surfaces of Mg alloys using cavitation for phosphating. The compounds formed by this treatment were Mg<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> and Mg(OH)<sub>2</sub>. In addition, electrochemical measurements and combined cycle tests were carried out to investigate the chloride corrosion resistance of the films formed after surface treatment. Regarding the anodic polarization curves, each surface-treated sample exhibited passivation–depassivation behavior. In cathode polarization curves, the corrosion rate for each surface-treated sample was approximately 1/10 that of the corresponding untreated sample. In the combined cycle test, the amount of surface oxidation caused by chlorides was less for each treated sample than for the corresponding untreated sample. In addition, when droplets containing chlorides were dropped onto a surface and the angle of the droplets that adhered to the surface was measured, the angle for the untreated sample remained constant even after the droplets were dropped several times. However, when several droplets were dropped onto each of the cavitation-treated samples, some areas were highly hydrophobic and some areas were less hydrophobic than the untreated samples. The results revealed that, although the coating formed on Mg alloys by phosphating using cavitation showed a protective effect in the early stages when chlorides were attached, the protective effect decreased over time.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132308"},"PeriodicalIF":5.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123791","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 tribological performances of Cr3C2- and B4C-added CoCrFeNiMo HEA coatings prepared by laser cladding 激光熔覆Cr3C2-和b4c - CoCrFeNiMo HEA涂层的微观结构和摩擦学性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-20 DOI: 10.1016/j.surfcoat.2025.132279

Sha Ni , Jianhui Yan , Tong Wei , Jiwen Wu , Hongyu Yang

{"title":"Microstructure and tribological performances of Cr3C2- and B4C-added CoCrFeNiMo HEA coatings prepared by laser cladding","authors":"Sha Ni , Jianhui Yan , Tong Wei , Jiwen Wu , Hongyu Yang","doi":"10.1016/j.surfcoat.2025.132279","DOIUrl":"10.1016/j.surfcoat.2025.132279","url":null,"abstract":"<div><div>The inadequate wear durability of CoCrFeNiMo high-entropy alloy coatings poses great challenges to achieving reliable surface protection for engineering components. This study strategically addresses this limitation by incorporating ceramic carbide particles. The pure CoCrFeNiMo (P0), CoCrFeNiMo-10wt%Cr<sub>3</sub>C<sub>2</sub> (CrC10), and CoCrFeNiMo-10wt%B<sub>4</sub>C (BC10) composite coatings were deposited onto Q235 substrate utilizing laser cladding. Those coatings' structural characteristics, mechanical properties, tribological behavior, and wear mechanisms were analyzed and compared. The P0 coating was composed of FCC and σ phases with a herringbone-like hierarchical eutectic structure, showing good fracture toughness (10.7–24.61 MPa·m<sup>1/2</sup>). The Cr<sub>3</sub>C<sub>2</sub>-added coating had a typical dendrite structure, and the primary phase from FCC gradually transformed upward into the σ phase. Adding B<sub>4</sub>C particles induced plenty of carbides and borides precipitation such as MoC, M<sub>7</sub>C<sub>3</sub>, and Fe<sub>3</sub>(B, C) in BC10 coating. Adding carbide particles promoted the solid solution strengthening of C and B atoms and in-situ precipitation of reinforcement phases, significantly enhancing the hardness. The hardnesses of P0, CrC10, and BC10 coatings were 652.8, 744.3, and 1162.1 HV<sub>0.2</sub>, respectively. Benefiting from the synergistic effect of the Mo-rich hardening phase and lubricating oxide layer, the BC10 coating achieved the lowest wear rate (9.8 × 10<sup>−6</sup> mm<sup>3</sup>·N<sup>−1</sup>·m<sup>−1</sup>), showing an order-of-magnitude improvement over the P0 and CrC10 coatings. The P0 and CrC10 coatings predominantly exhibited abrasive wear modes. Surprisingly, the worn surface of the BC10 coating was very slight without detectable scratches or delamination, which was dominated by oxidative wear.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132279"},"PeriodicalIF":5.3,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098616","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

Exploring the oxidation resistance of Ti1-x-y(HfNbTaZr)xAlyN coatings deposited by cathodic arc evaporation 阴极电弧蒸发沉积Ti1-x-y(HfNbTaZr)xAlyN涂层的抗氧化性能研究

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-20 DOI: 10.1016/j.surfcoat.2025.132304

Hua D. Zhang , Jian W. Du , Li Chen , Yi Kong , She Q. Wang

{"title":"Exploring the oxidation resistance of Ti1-x-y(HfNbTaZr)xAlyN coatings deposited by cathodic arc evaporation","authors":"Hua D. Zhang , Jian W. Du , Li Chen , Yi Kong , She Q. Wang","doi":"10.1016/j.surfcoat.2025.132304","DOIUrl":"10.1016/j.surfcoat.2025.132304","url":null,"abstract":"<div><div>This study investigated the oxidation resistance of Ti<sub>1-x-y</sub>(HfNbTaZr)<sub>x</sub>Al<sub>y</sub>N coatings with broad compositions (x = 0–0.48, y = 0.38–0.40). Isothermal oxidation at 850 °C/10 h reveals that intermediate additions (x = 0.05, 0.09) developed thin oxide layers of ~0.21 μm and ~ 0.19 μm, respectively, while other coatings (x = 0 or ≥ 0.25) completely oxidized. Theoretical analyses demonstrate synergistic mechanisms in optimized compositions (x = 0.05, 0.09): the preferential formation of r-TiO<sub>2</sub> at 1073 K, the suppression of the TiO<sub>2</sub> phase transition and the accumulation of a top Al-rich oxide layer at elevated temperatures. Conversely, excessive Me-additions (x ≥ 0.25) promoted the prevalence of more Me-O and fewer Al<img>O bonds. The porous and loose structural characteristics of these mixed oxides and the lower protection of the aluminum oxide layer deteriorate their oxidation resistance. These findings establish chemical complexity optimization rather than entropy maximization as the governing principle for higher oxidation-resistant.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132304"},"PeriodicalIF":5.3,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098576","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

Tribological, microstructural and surface characteristics of additively manufactured AlSi10Mg to sequential vibratory peening and heat treatment 增材制造的AlSi10Mg经连续振动强化和热处理后的摩擦学、显微组织和表面特性

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-20 DOI: 10.1016/j.surfcoat.2025.132307

Ömer Saban , Mehmet Erdi Korkmaz , Okan Unal , Mustafa Sabri Gok , Azmi Erdoğan

{"title":"Tribological, microstructural and surface characteristics of additively manufactured AlSi10Mg to sequential vibratory peening and heat treatment","authors":"Ömer Saban , Mehmet Erdi Korkmaz , Okan Unal , Mustafa Sabri Gok , Azmi Erdoğan","doi":"10.1016/j.surfcoat.2025.132307","DOIUrl":"10.1016/j.surfcoat.2025.132307","url":null,"abstract":"<div><div>Secondary operations are frequently necessary to address issues with components produced by selective laser melting (SLM), such as internal defects, stress accumulation, and rough surfaces. This study investigated the effects of T6 heat treatment (HT), vibratory peening (VP) on AlSi10Mg alloy at different temperatures and different durations and both single and multiple condition. The solution treatment temperature was applied at 400 °C, 450 °C and 500 °C and VP was applied for 2.5, 5, 10 and 20 min. The changes in microstructural, hardness and wear properties in as-built (AB), vibratory peened of AB (AB+VP), heat treated of AB (AB+HT) and heat treated/vibratory peened of AB (AB+HT+VP) samples were investigated. Though SLM left the microstructure unaffected, the existence of Si precipitates and their growth with increasing solution temperature suggested the necessity for heat treatment. Vibratory peening was used to harden the surfaces; the impact become more noticeable the longer the VP remained active. A more obvious hardness increase came at higher solution temperature. In every setting, VP increases wear resistance. Even although the HT samples' hardness had decreased, wear losses did, in fact, diminish considerably, especially following VP treatment.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132307"},"PeriodicalIF":5.3,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106010","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 bias voltage on the microstructure and mechanical properties of TiZrN coatings prepared by reactive magnetron sputtering in industrial conditions 工业条件下偏置电压对反应磁控溅射制备的TiZrN涂层微观结构和力学性能的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-20 DOI: 10.1016/j.surfcoat.2025.132240

Sahand Behrangi, Pavel Souček, Vilma Buršíková, Matej Fekete, Petr Vašina

{"title":"Influence of bias voltage on the microstructure and mechanical properties of TiZrN coatings prepared by reactive magnetron sputtering in industrial conditions","authors":"Sahand Behrangi, Pavel Souček, Vilma Buršíková, Matej Fekete, Petr Vašina","doi":"10.1016/j.surfcoat.2025.132240","DOIUrl":"10.1016/j.surfcoat.2025.132240","url":null,"abstract":"<div><div>TiZrN coatings were prepared using three bias voltages of −50 V, −100 V and −175 V via a combinatorial approach, which led to the coatings with different Ti/(Ti+Zr) values. The deposition rate of TiN and ZrN remained practically constant with increasing the bias voltage. The TiZrN coatings, however, exhibited a drop of <span><math><mo>∼</mo></math></span>15% in their deposition rates with increasing the bias voltage. The microstructure of TiN and ZrN did not change with the bias voltage applied, unlike TiZrN, which underwent microstructural changes with increasing bias voltage. For all binary and ternary nitrides, the lattice parameter increased and crystallite size decreased with increasing the bias voltage. All TiN, ZrN and TiZrN coatings showed enhanced compressive stress with increasing the bias voltage. ZrN hardness peaked at the bias voltage of −100 V, in contrast to that of TiN, which exhibited a constant increase with the bias voltage and peaked at −175 V. In ternary nitrides, bias voltage significantly influenced the hardness values, whereas in the case of Ti/(Ti+Zr), the effect was minimal, especially at the higher bias voltages. For all binary and ternary coatings, H/E<span><math><msub><mrow></mrow><mrow><mi>ef</mi></mrow></msub></math></span> and H<sup>3</sup>/E<span><math><msub><mrow></mrow><mrow><mi>ef</mi></mrow></msub></math></span> <span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span> increased with the bias voltage, indicating an enhanced wear resistance and resilience with increasing bias voltage.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132240"},"PeriodicalIF":5.3,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106012","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

Novel one-step approach using HVOF thermal spray process for rapid fabrication of superhydrophobic stainless steel coating 采用HVOF热喷涂一步法快速制备超疏水不锈钢涂层

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-05-19 DOI: 10.1016/j.surfcoat.2025.132295

Aiswarya Sahu , V. Narayanan , K.R. Ravi

{"title":"Novel one-step approach using HVOF thermal spray process for rapid fabrication of superhydrophobic stainless steel coating","authors":"Aiswarya Sahu , V. Narayanan , K.R. Ravi","doi":"10.1016/j.surfcoat.2025.132295","DOIUrl":"10.1016/j.surfcoat.2025.132295","url":null,"abstract":"<div><div>This study introduces a novel one-step HVOF thermal spray method for fabricating superhydrophobic stainless steel coatings. The effects of equivalence ratio (Φ) and heat treatment conditions on coating wettability were systematically analyzed. Lower equivalence ratio (e.g., 0.98) enhance coating density but compromise the hierarchical roughness necessary for superhydrophobicity. In contrast, an optimized equivalence ratio of 1.2 yields rough, hierarchically structured surfaces that initially exhibit hydrophobicity, transitioning to superhydrophobicity upon heat treatment. Heat treatment at 150 °C is identified as optimal, reducing surface energy through increased nonpolar C–C bond formation while maintaining hierarchical roughness, resulting in a water contact angle (WCA) exceeding 160° and roll-off angles as low as ∼5°. However, at 200 °C, Fe₃O₄ catalyzes the formation of polar oxygen-containing bonds (C–O, C=O), increasing surface energy and maintaining hydrophobicity (WCA ∼125°). At temperatures ≥250 °C, further oxidation leads to superhydrophilic behavior. This study confirms that surface chemistry, particularly the balance between nonpolar and polar functional groups, governs wettability transitions, while phase transformations such as Fe₃O₄ formation have a secondary effect. These findings demonstrate that controlled heat treatment can effectively replicate the effects of prolonged atmospheric exposure, offering a scalable and efficient approach for developing durable superhydrophobic coatings.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132295"},"PeriodicalIF":5.3,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115642","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