Surface & Coatings Technology最新文献_第10页

Investigation on the interface microstructure and phase composition of laser cladding pure copper coating 激光熔覆纯铜涂层的界面微观结构和相组成研究

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-09-29 DOI: 10.1016/j.surfcoat.2024.131408

{"title":"Investigation on the interface microstructure and phase composition of laser cladding pure copper coating","authors":"","doi":"10.1016/j.surfcoat.2024.131408","DOIUrl":"10.1016/j.surfcoat.2024.131408","url":null,"abstract":"<div><div>Laser cladding is an efficient and clean method that can prepare a corrosion-resistant pure copper coating on the nuclear fuel container surface to ensure service safety. In this study, the single-layer and double-layer pure copper coatings were prepared on 20# steel tubes by laser cladding. The microstructure, elements distribution, phase composition, and interface structure, as well as strain distribution, were characterized by Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), high-resolution transmission electron microscopy (HRTEM), and transmission kikuchi diffraction (TKD). The results show that the kernel average misorientation (KAM) and geometry necessary dislocation (GND) density at the coating/substrate interface in the double-layer Cu coating decrease compared to the single-layer Cu coating. Under the thermal action during laser cladding of double-layer coating, the phase composition in the substrate transforms completely from austenite, FeO, and ferrite to the entire ferrite. The Cu/Fe interface maintains certain orientation relationships, namely the Kurdjumov-Sachs (K<img>S) and the Nishiyama-Wassermann (N<img>W) relationships, with a mismatch of only 3.01 % for the coherent interface. Thus, the lattice distortion at the interface reduces, slightly alleviating the strain concentration.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427515","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

Stray current affected zone in electrochemical jet machining 电化学喷射加工中的杂散电流影响区

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-09-29 DOI: 10.1016/j.surfcoat.2024.131413

引用次数: 0

Correlation between shot peening coverage and surface microstructural evolution in AISI 9310 steel: An EBSD and surface morphology analysis AISI 9310 钢中喷丸强化覆盖率与表面微观结构演变之间的相关性：EBSD 和表面形貌分析

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-09-29 DOI: 10.1016/j.surfcoat.2024.131406

{"title":"Correlation between shot peening coverage and surface microstructural evolution in AISI 9310 steel: An EBSD and surface morphology analysis","authors":"","doi":"10.1016/j.surfcoat.2024.131406","DOIUrl":"10.1016/j.surfcoat.2024.131406","url":null,"abstract":"<div><div>In this study, martensitic high-strength steel serves as the subject of investigation, with both conventional and severe shot peening experiments being conducted. The coverage levels for conventional shot peening (CSP) are set at 100 % and 200 %, while severe shot peening (SSP) sees levels of 800 % and 1200 %. For the first time, the use of kernel average misorientation (KAM) enables the calculation of geometrically necessary dislocation (GND) density after peening, facilitating the study of GND density distribution across different coverage and offering a method for the visual assessment of peening degree. Results reveal that, under CSP, the gradient distribution of grain size is relatively uniform, whereas SSP leads to a pronounced gradient in grain size distribution. Taking into account the heterogeneous distribution of the initial material microstructure, a gradient in grain size from the surface to the interior of the material will appear after the coverage reaches a certain value, which is 400 % for AISI 9310 steel. Compared with CSP, SSP will further reduce the surface roughness Sa and improve the surface quality. The research presented further understands the relationship between shot peening process parameters and martensitic steel microstructure, providing an important reference for revealing the strengthening mechanism and selecting reasonable process parameters.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427587","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

Research on the evolution mechanism of surface morphology and solidification crystallization simulation of molten pool in electron beam polishing 电子束抛光熔池表面形貌演变机理及凝固结晶模拟研究

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-09-28 DOI: 10.1016/j.surfcoat.2024.131414

{"title":"Research on the evolution mechanism of surface morphology and solidification crystallization simulation of molten pool in electron beam polishing","authors":"","doi":"10.1016/j.surfcoat.2024.131414","DOIUrl":"10.1016/j.surfcoat.2024.131414","url":null,"abstract":"<div><div>Clarifying the flow and solidification process rules of a molten pool in scanning electron beam polishing remains challenging. This paper establishes a geometric model that closely resembles the original milling morphology, investigates the morphology evolution process, the flow law of the molten pool, and the change in driving force under the action of the electron beam, and solves the solidification and crystallization parameters of the solid-liquid interface. Results demonstrate that thermocapillary force is the dominant driving factor for horizontal motion inside the molten pool, which immediately leads to the emergence of velocity conversion sites on the surface of the molten pool, thus effecting surface fluctuation variations. Combined with polishing inspection, the average surface roughness error is controlled within ±7 %. Solid-liquid interface deflection significantly affects grain growth, and solidification and crystallization parameters follow similar patterns at different workpiece speeds. The grain structure of the melt zone can be predicted with the crystallization parameters at various depths of the melt layer.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427581","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

Ion incidence angle-dependent pattern formation on AZ® 4562 photoresist by reactive ion beam etching 通过反应离子束蚀刻在 AZ® 4562 光刻胶上形成与离子入射角有关的图案

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-09-28 DOI: 10.1016/j.surfcoat.2024.131407

{"title":"Ion incidence angle-dependent pattern formation on AZ® 4562 photoresist by reactive ion beam etching","authors":"","doi":"10.1016/j.surfcoat.2024.131407","DOIUrl":"10.1016/j.surfcoat.2024.131407","url":null,"abstract":"<div><div>Reactive ion beam etching is a key technology in the field of ultra-precise surface engineering. In this process nanopatterns can emerge and alter the functional properties of the surfaces. Therefore, it is necessary to understand which reactive ion beam parameters influence the emergence of these nanopatterns. In this study the influence of reactive ion beam etching on the commercially available photoresist AZ® 4562 is investigated. Atomic force microscopy and scanning electron microscopy reveal the formation of nanopatterns (ripples, triangular features, protrusions, facets) depending on a wide range of ion incidence angles (0°–75°) as well as the etch time. The emerged nanopatterns resemble those known from inorganic materials and therefore, lead to the assumption that local redeposition, surface viscous flow and dispersion plays an important role for the pattern formation on polymer surfaces. Major difference from ion beam erosion with inert species is the absence of nanoholes. Spectroscopic ellipsometry shows that the thickness of the modified surface layer depends on the ion incidence angle but not on the fluence in the investigated range. Using X-ray photoelectron spectroscopy, trends of the chemical composition of the surface/near-surface region were detected, which depend on ion incidence angle and etch time.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A multifunctional Mg2Si5Al4O18/Y2Si2O7 glass-ceramic coating for porous Si3N4 ceramic 用于多孔 Si3N4 陶瓷的多功能 Mg2Si5Al4O18/Y2Si2O7 玻璃陶瓷涂层

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-09-28 DOI: 10.1016/j.surfcoat.2024.131409

{"title":"A multifunctional Mg2Si5Al4O18/Y2Si2O7 glass-ceramic coating for porous Si3N4 ceramic","authors":"","doi":"10.1016/j.surfcoat.2024.131409","DOIUrl":"10.1016/j.surfcoat.2024.131409","url":null,"abstract":"<div><div>In order to enhance the oxidation and moisture resistance of porous Si<sub>3</sub>N<sub>4</sub> ceramics, here we design a novel Y<sub>2</sub>O<sub>3</sub>-MgO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> glass-ceramic coating through a straightforward scraping process followed by sintering method. The crystalline phase, water absorption, dielectric properties and high temperature resistance of the coating are evaluated systematically. The result shows that the coating obtained by sintering at 1200 °C for 30 min exhibits high density, with an approximate thickness of 88 ± 5 μm. The crystalline phases present in the coating are composed of Mg<sub>2</sub>Si<sub>5</sub>Al<sub>4</sub>O<sub>18</sub> and Y<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>. The water absorption rate of the coating is only 0.59 %, and its dielectric constant ranges from 3.3 to 3.4 in the frequency range of 2–20 GHz, with a low dielectric loss tangent below 4 × 10<sup>−3</sup>. After exposure to high-temperature (1000 °C for 30 min), no significant changes are observed in the microstructure or water absorption rate of the coating. Therefore, this study has successfully developed a multifunctional glass-ceramic coating that is moisture-proof, high-temperature resistant, and exhibits low dielectric loss.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427579","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 substrate temperature and bias voltage on mechanical and tribological properties of cosputtered (TiZrHfTa)Nx films 基底温度和偏置电压对共溅射 (TiZrHfTa)Nx 薄膜机械和摩擦学特性的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-09-25 DOI: 10.1016/j.surfcoat.2024.131403

{"title":"Effects of substrate temperature and bias voltage on mechanical and tribological properties of cosputtered (TiZrHfTa)Nx films","authors":"","doi":"10.1016/j.surfcoat.2024.131403","DOIUrl":"10.1016/j.surfcoat.2024.131403","url":null,"abstract":"<div><div>This study investigated the effects of substrate temperature and bias voltage on the mechanical and tribological properties of cosputtered (TiZrHfTa)N<sub><em>x</em></sub> films. A substrate temperature ranging from room temperature to 400 °C, and a bias voltage ranging from 0 to −150 V were selected as the sputtering variables. A mixture gas with a nitrogen flow ratio (<em>f</em><sub>N2</sub> = N<sub>2</sub>/[N<sub>2</sub> + Ar]) of 0.2 was used to fabricate nitride films. Nanoindentation and wear tests were conducted to assess the performance of the fabricated (TiZrHfTa)N<sub><em>x</em></sub> films, which formed a single face-centered cubic structure. Increasing the substrate temperature resulted in grain growth, lattice shrinkage, and nonsignificant improvements in mechanical properties. Applying a bias voltage of −150 V to the substrate increased the hardness of the fabricated film to a peak of 32.7 GPa compared with that of 29.3 GPa for the film prepared in an electronically grounded state. The (Ti<sub>0.24</sub>Zr<sub>0.22</sub>Hf<sub>0.19</sub>Ta<sub>0.35</sub>)N<sub>0.66</sub> film prepared at a bias voltage of 0 V and substrate temperature of 400 °C exhibited the optimal combination of mechanical and tribological properties (hardness, 30.0 GPa; elastic modulus, 325 GPa; and wear rate, 1.16 × 10<sup>−5</sup> mm<sup>3</sup>/Nm).</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142320089","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 performance of novel Ni-based alloy cladding with excellent high temperature wear resistance and self-lubrication performance 具有优异高温耐磨性和自润滑性能的新型镍基合金堆焊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 : 2024-09-25 DOI: 10.1016/j.surfcoat.2024.131395

{"title":"Microstructure and tribological performance of novel Ni-based alloy cladding with excellent high temperature wear resistance and self-lubrication performance","authors":"","doi":"10.1016/j.surfcoat.2024.131395","DOIUrl":"10.1016/j.surfcoat.2024.131395","url":null,"abstract":"<div><div>This paper aims to study the laser cladding of Ni-based alloy coatings with excellent high temperature wear resistance and self-lubrication performance on the surface of parts such that meet complex metallurgical service conditions. The composite alloy powders were formed by adding 3 wt%–11 wt% WS<sub>2</sub> and Ti powder to NiCrCoMoBSi alloy powder, and the novel Ni-based alloy samples with high temperature wear resistance and self-lubrication performance were cladded on the surface of Cr28Ni48W5 substrate by laser cladding. The results show that the addition of WS<sub>2</sub> and Ti powder had a significant influence on the microstructure evolution and high temperature wear resistance and self-lubrication performance of the samples. The laser cladding coating with 7 wt% WS<sub>2</sub> and Ti had the 3 % TiS self-lubricating phase and 19 % enhanced phase with the best microstructure matching relationship, which improved the high temperature wear resistance and self-lubrication performance of the sample. At 800 °C, compared with the Cr28Ni48W5 superalloy substrate, the friction coefficient of the laser cladding coating was 0.22 and the wear ratio was 1.70 × 10<sup>−5</sup> mm<sup>3</sup> N<sup>−1</sup> m<sup>−1</sup>, which were reduced by 60 % and 54.67 % respectively. The mechanism of the enhanced wear resistance and self-lubrication performance was elaborated.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358652","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

Engineering of multilayered coating on additively manufactured Ti-6Al-4V porous implants to promote tribological and fatigue performances 在快速成型的 Ti-6Al-4V 多孔植入物上设计多层涂层，以提高摩擦学和疲劳性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-09-24 DOI: 10.1016/j.surfcoat.2024.131400

{"title":"Engineering of multilayered coating on additively manufactured Ti-6Al-4V porous implants to promote tribological and fatigue performances","authors":"","doi":"10.1016/j.surfcoat.2024.131400","DOIUrl":"10.1016/j.surfcoat.2024.131400","url":null,"abstract":"<div><div>Despite the numerous advantages of additively manufactured Ti-6Al-4V porous implants surface modified by plasma electrolyte oxidation (PEO) coatings in biomedical applications, several challenges still persist regarding their tribological and fatigue performances. To address these challenges, this study aims to engineer an innovative multilayered coating based on physical vapor deposited (PVD) Nb/NbN coatings on PEO-treaded Ti-6Al-4V porous implants. Three configurations of Nb/NbN coatings, including one, two, and three PVD layers were deposited on PEO-treated Ti-6Al-4V implants to simultaneously assess the effects of both increased coating thickness and configuration on the surface topography and mechanical performances of Ti-6Al-4V implants. Results showed that increasing the thickness and number of coatings changed the surface morphology and reduced the surface roughness. The PVD/PEO treatment demonstrated enhanced wear resistance of Ti-6Al-4V samples compared to the PEO treatment, depending on the coating conditions. Noticeably, the samples with 2 Nb/NbN layers exhibited the highest wear resistance and decreased the wear rate by 90 % compared to the Ti-6Al-4V samples. Although PEO treatment resulted in a decrease in fatigue life, the deposition of Nb/NbN coatings, especially those with 2 and 3 layers, markedly improved fatigue resistance compared to the PEO-treated samples. These modified samples attained approximately 81 % and 84 % of the fatigue life of the not-treated Ti-6Al-4V samples, respectively. Overall, the deposition of multilayered PVD Nb/NbN coatings on PEO-treated Ti-6Al-4V implants demonstrated an effective improvement in wear resistance while maintaining acceptable fatigue life under cyclic loading, making it promising for biomedical implants.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427512","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 introduction of MXene on low energy plasma electrolytic oxidation 引入 MXene 对低能等离子体电解氧化的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2024-09-24 DOI: 10.1016/j.surfcoat.2024.131397

{"title":"Effect of introduction of MXene on low energy plasma electrolytic oxidation","authors":"","doi":"10.1016/j.surfcoat.2024.131397","DOIUrl":"10.1016/j.surfcoat.2024.131397","url":null,"abstract":"<div><div>This article discusses the development of 2D MXene-containing coatings on magnesium alloy LA91, which are produced using low-energy plasma electrolytic oxidation (LePEO) processing. The coatings enhance substrate corrosion resistance and offer improved wear resistance. Notably, the coatings exhibit increased corrosion and wear resistance, as well as higher microhardness, while simultaneously reducing the voltage required for the PEO process. The addition of MXene to electrolyte enhances its conductivity, leading to the incorporation of MXene into the oxide coating. Despite a reduction in coating thickness, the resulting coatings demonstrate excellent corrosion resistance, wear resistance, and hardness. The MXene-enriched PEO coatings show impressive performance metrics compared to the Mg<img>Li alloy substrate. The corrosion current density of the MXene-enriched coatings is only 3.3 % of that of the Mg<img>Li alloy, while the average friction coefficient is reduced to 39.9 %, and the hardness is 6.6 times greater. Additionally, the coatings exhibit enduring corrosion resistance during prolonged immersion and neutral salt spraying tests. These performance improvements are attributed to MXene's ability to hinder the transmission of corrosive media, as well as its interlayer shear and self-lubrication properties, which enhance wear resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142314914","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