Rajaram S. Sutar, Bairu Shi, Susmita S. Kanchankoti, Sagar S. Ingole, Wahida S. Jamadar, Alsaba J. Sayyad, Priyanka B. Khot, Kishor Kumar Sadasivuni, Sanjay S. Latthe, shanhu liu, Appasaheb K. Bhosale
{"title":"Development of Self-cleaning Superhydrophobic Cotton Fabric through Silica/PDMS Composite Coating","authors":"Rajaram S. Sutar, Bairu Shi, Susmita S. Kanchankoti, Sagar S. Ingole, Wahida S. Jamadar, Alsaba J. Sayyad, Priyanka B. Khot, Kishor Kumar Sadasivuni, Sanjay S. Latthe, shanhu liu, Appasaheb K. Bhosale","doi":"10.1088/2051-672x/ad0452","DOIUrl":"https://doi.org/10.1088/2051-672x/ad0452","url":null,"abstract":"Abstract The lotus effect informs that self-cleaning superhydrophobic surfaces can be obtained by creating rough surface structures and modifying them with chemicals that have low surface energy. Herein, the composite of hydrophobic silica nanoparticles (SNPs) and polydimethylsiloxane (PDMS) was deposited on cotton fabric by multiple dip cycles. At optimal condition, the agglomerated SNPs in PDMS produces a hierarchical rough surface, as a result the coated cotton fabric has revealed a water contact angle (WCA) of 158.41 ± 1.58° and 4° of sliding angle. Due to negligible water adhesion to a superhydrophobic surface, coated cotton fabric reveals excellent self-cleaning behavior, which was tested by dust particles, muddy water and tea droplets. Furthermore, coated cotton fabric sustains superhydrophobicity over the mechanical robustness tests including adhesive tape peeling test, sandpaper abrasion test, and ultrasonication. Therefore, such an approach may be applicable in textile industries for self-cleaning purposes.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":" 67","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135191845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
wei Zhang, Peibin Su, Minli Zheng, Lei Zhang, Fengsong Bai
{"title":"Analysis and prediction of surface topography characteristics and influence factors of tool passive vibration in milling process","authors":"wei Zhang, Peibin Su, Minli Zheng, Lei Zhang, Fengsong Bai","doi":"10.1088/2051-672x/ad0b18","DOIUrl":"https://doi.org/10.1088/2051-672x/ad0b18","url":null,"abstract":"Abstract The surface topography of the processed workpiece has a significant impact on its service performance, and the tool undergoes passive vibration due to the influence of milling forces during the machining process. This article focuses on the influence of milling parameters and tool passive vibration on the formation process of surface topography. Firstly, the forming mechanism of surface topography during passive vibration of cutting tools was studied, and a cutting edge motion trajectory model considering milling parameters and passive vibration of cutting tools was established; And the influence of milling parameters on surface topography with and without tool passive vibration was analyzed through experiments and simulations; A prediction model for the maximum height Sz and three-dimensional arithmetic mean height Sa of surface topography was established using least squares support vector machine (LSSVM). We used the Improved Particle Swarm Optimization (PSO) algorithm to search for optimal solutions for kernel width coefficients and regularization parameters in LSSVM, and wrote a program to improve the PSO-LSSVM prediction model. The results indicate that the proposed prediction model can provide a certain basis for the selection of actual milling experimental parameters.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":" 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135192319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bo Lin, Li Zhang, Meng Cai, Jingfen Lu, Jianing Yin, Yu Huang, Yihan Zhang, Xiaoqiang Fan, Min-Hao Zhu
{"title":"Synergistic anti-wear performance of zinc-rich epoxy coating on shot peening strengthened Q345 steel","authors":"Bo Lin, Li Zhang, Meng Cai, Jingfen Lu, Jianing Yin, Yu Huang, Yihan Zhang, Xiaoqiang Fan, Min-Hao Zhu","doi":"10.1088/2051-672x/ad0b17","DOIUrl":"https://doi.org/10.1088/2051-672x/ad0b17","url":null,"abstract":"Abstract The synergy of tribology design and surface engineering is vitally important for fulfilling the long-term anti-wear requirements of mechanical equipment. Here, Q345 steel was processed by shot peening (SP) for forming a volcano-like hardened layer (77.72 HV) with high surface roughness (3.77 μm) and low residual tensile stress (210.75 MPa). Then, a zinc-rich epoxy coating was painted on SP-strengthened Q345 steel to construct the double-layer protection. The double-layer system shows excellent tribological behaviors, especially wear resistance being reduced by 76.50% and 38.75%, respectively, with Q345 steel and that sprayed by epoxy coating as a comparison. Crucially, SP layer plays a role in mechanical support, while epoxy coating acts as a cushion to friction force, thus achieving the synergy for enhancing the anti-friction/wear abilities.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":" 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135192328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of strain rate on glass fiber reinforced polymer composite using split hopkinson pressure bar","authors":"Jitendra Basrani, Manoj Kumar, Pramod Kumar","doi":"10.1088/2051-672x/ad00ce","DOIUrl":"https://doi.org/10.1088/2051-672x/ad00ce","url":null,"abstract":"Abstract The aim of this study is to examine the stress–strain behavior of Glass Fibre Reinforced Polymer (GFRP) composite with three different orientations, namely [0°/90°]s, [±45]s, [0°/+45°/−45°/90°] T . To achieve this, the GFRP was simulated using the Split Hopkinson Bar (SHPB) setup in ABAQUS/CAE. The striker bar was used at three different velocities (9.7 m s −1 , 12.7 m s −1 , and 14.3 m s −1 ) to produce strain rates ranging from 1000 s −1 to 2000 s −1 . The dynamic response of the GFRP composite was studied by considering its stress–strain behavior. The effect of strain rate on the elastic modulus and energy absorption capacity of GFRP laminates was analyzed through complete stress versus strain curves. The results showed that the elastic modulus and energy absorption capacity of GFRP laminates were sensitive to strain rates, with an increase in strain rate leading to an increase in the elastic modulus and energy absorption capacity.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136112732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of lubricant infiltration into the groove-like surface texture on the friction response of the textured stainless-steel contact surface","authors":"Dinghuai Yang, Jian Cheng, Linjie Zhao, Mingjun Chen, Henan Liu, Jinghe Wang, Chengshun Han, Yazhou Sun","doi":"10.1088/2051-672x/acfc5a","DOIUrl":"https://doi.org/10.1088/2051-672x/acfc5a","url":null,"abstract":"Abstract Surface texturing is recognized as an effective solution for reducing friction on stainless-steel contact interfaces. Previous studies mainly focused on the influence of the texture parameters and lubricant-film depths on their tribology performances. Notably, whether the lubricant can penetrate texture and the lubricant infiltration capacity may significantly affect the tribology performances of the contact interfaces. They have been rarely considered, which may cause some well-designed textures to fail to perform their roles and be abandoned. Herein, a novel lubricant model is developed to explore the tribology performances of the contact interfaces with different lubricant infiltration capacities in textures and the influence factors of the lubricant infiltration capacities. Textured surfaces with different dimensions are fabricated by the femtosecond laser to explore the effects of the texture dimensions on the lubricant infiltration capacities. The results indicate that texture width, depth and lubricant viscosity could significantly affect the lubricant infiltration capacities. Moreover, the results indicate that the lubricant infiltration capacity would significantly affect the tribology performances of the contact interfaces. This work indicates that the impact of the lubricant infiltration should be considered in texture design. This work can be widely used to guide the texture design applied in plenty of fields.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136057792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kefan Xu, Guanghui Zhang, Jiazhen Han, Qiang Wang, Yanzhong Huang, Wenjie Gong, Yang Guo, Zhe Liu, Wenlong Sun
{"title":"Analysis of misalignment characteristics for textured foil journal bearing based on multigrid method","authors":"Kefan Xu, Guanghui Zhang, Jiazhen Han, Qiang Wang, Yanzhong Huang, Wenjie Gong, Yang Guo, Zhe Liu, Wenlong Sun","doi":"10.1088/2051-672x/acfd45","DOIUrl":"https://doi.org/10.1088/2051-672x/acfd45","url":null,"abstract":"Abstract Surface texturing is an excellent solution to the load capacity deficiency of foil journal bearings. However, it will also introduce significant discretization efforts. This paper explored the possibility of searching the static balance locus of textured foil journal bearing using the multigrid method to ensure design efficiency. The modified Reynolds equation characterized the ultra-thin gas film behavior inside bump-type foil bearing, and two foil models were adopted simultaneously to obtain the foil’s structural deflection. The predicted load capacity agreed well with the experimental data. The results indicate that multigrid can accelerate the solution process of the compressible pressure governing equation, and the speed can be increased up to 70% when the nonlinear discretization scheme is adopted. It is recommended that textures are located in the pressure-rising region along the shaft’s rotating direction and that the axial direction is fully textured to improve load capacity. Moreover, the above texture distribution scheme can increase the tolerable maximum misalignment angle by 11.8% and enhance the stability of rotors operated in light-load and high-speed cases.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135044321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lianet Aguilera Dominguez, Juliana Pereira da Silva, Glenda Quaresma Ramos, ROBERT SARAIVA MATOS, Otoniel da Cunha Mendes, Marcos Marques da Silva Paula, Yurimiler Leyet Ruiz, Henrique da Fonseca FIlho
{"title":"Investigating surface and wettability properties of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub>/Na<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>/PVA composites","authors":"Lianet Aguilera Dominguez, Juliana Pereira da Silva, Glenda Quaresma Ramos, ROBERT SARAIVA MATOS, Otoniel da Cunha Mendes, Marcos Marques da Silva Paula, Yurimiler Leyet Ruiz, Henrique da Fonseca FIlho","doi":"10.1088/2051-672x/ad0067","DOIUrl":"https://doi.org/10.1088/2051-672x/ad0067","url":null,"abstract":"Abstract Ceramics-polymer composites have garnered significant interest in recent years due to their unique combination of properties and potential applications. This study presents an in-depth analysis of the surface and wettability properties of new Na 2 Ti 3 O 7 /Na 2 Ti 6 O 13 /PVA composite, aiming to uncover their unique characteristics. The analysis revealed notable changes in the morphology and 3D spatial patterns of the films upon incorporating heated and unheated Na 2 Ti 3 O 7 /Na 2 Ti 6 O 13 into the PVA matrix. The PVA film containing heated ceramics displayed hierarchical topographic roughness (3.71±1.13 nm) similar to those of pure PVA films (2.28±0.13 nm), contrasting with the film containing unheated ceramics (12.31±2 nm). The surface texture of all films exhibited comparable isotropies (without significant difference at a p-value=0.05), indicating that their physical properties remained largely unaffected by the heat treatment imposed on the ceramics. The surface microtexture similarity between the PVA film and the one containing heated ceramics can be attributed to their comparable spatial complexity (FD=2.41‒2.44). Contact angle measurements further demonstrated similar surface wettability between pure PVA (54.5±1.4°) and PVA containing heated Na 2 Ti 3 O 7 /Na 2 Ti 6 O 13 ceramics (58.6±2.6°), which can be attributed to the resemblances in their surface microtextures. These findings highlight the pivotal role of heat treatment in the formation of Na 2 Ti 3 O 7 /Na 2 Ti 6 O 13 /PVA composites with surface and wettability properties akin to those of pure PVA films. This research contributes to the understanding of composite materials and their potential for various applications, including anticorrosive coatings, sensor devices, and surface engineering.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134948143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Microstructure and properties of plasma cladding Ni-based alloy coated on 40Cr Surface","authors":"Qiwen Xun, Yanhui Liu, Zengren Pan, Ying Wu","doi":"10.1088/2051-672X/acf779","DOIUrl":"https://doi.org/10.1088/2051-672X/acf779","url":null,"abstract":"Three Ni-based alloys (Ni60, Ni65, Ni60W) were selected to be coated on the surface of 40Cr and 20 steel. The microstructure, phase composition and elemental distribution of the coatings were characterised respectively to discuss the effects of different substrates, cladding materials, and processes. The corrosion and thermal fatigue behaviour of the coatings were investigated. The results show that the coatings prepared by plasma cladding have a dense microstructure with few defects and a white bright band of a certain thickness was formed between the coating and the substrate. The white bright band between the coating prepared by flame spraying and the substrate was not obvious. The main phase compositions of the coatings are Cr23C6, Cr7C3, Ni2.9Cr0.7Fe0.36 and FeNi3 phases, with the W2C phase also present in the Ni60W coating. The heat-affected zone (HAZ) of the coating is influenced by the coating preparing processes, substrate material and process state of substrates: the size of the HAZ of the plasma cladded coating is smaller than that of the flame sprayed coating, the HAZ of the 40Cr substrate is smaller than that of the 20 steel, and the HAZ of the tempered 40Cr substrate is smaller than that of the annealed 40Cr substrate. The Ni-based alloy coating can effectively improve the surface hardness of the substrate. The Ni65 alloy powder is the most effective (HV0.5992), followed by the Ni60W alloy powder (HV0.5798) and finally the Ni60 alloy powder (HV0.5712). The Ni65 alloy coating has the relatively best thermal fatigue properties, followed by the Ni60W alloy coating and the Ni60 alloy coating is the relatively worst. At the same time, the corrosion resistance of different Ni-based alloy coatings is consistent with the thermal fatigue properties of the coatings.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"249 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91321177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lucas C B Carolo, Robert E Cooper O, M. F. de Oliveira, Jorge V L da Silva
{"title":"The effects of varying wall thickness on the surface roughness of Ti-6Al-4V by electron beam powder bed fusion","authors":"Lucas C B Carolo, Robert E Cooper O, M. F. de Oliveira, Jorge V L da Silva","doi":"10.1088/2051-672X/acf67c","DOIUrl":"https://doi.org/10.1088/2051-672X/acf67c","url":null,"abstract":"While the electron beam powder bed fusion (EB-PBF) process is recognized for generating parts with high surface roughness, the impact of wall thickness remains relatively understudied and shows inconsistent literature results. This study addresses this gap by performing a full factorial Design of Experiments (DoE) to examine Ti-6Al-4V specimen surfaces built in three distinct orientations (vertical, upskin, and downskin) and six wall thickness levels (0.5, 1.0, 2.0, 2.5, 3.0, and 4.0 mm). Findings reveal orientation-dependent effects of wall thickness on surface roughness, particularly for thicknesses below 1.0 mm. Vertical surfaces show increased roughness with decreasing wall thickness, in which 0.5 mm-thick specimens exhibited the highest Ra roughness values. In contrast, no particular trend was observed for upskin surfaces, with 0.5 mm specimens displaying roughness values comparable to the 2.0 to 4.0 mm range of specimens. Yet, downskin surfaces of 0.5 mm specimens showed significantly lower Ra roughness compared to their thicker counterparts, a trend opposite of that of vertical surfaces. These behaviors may relate to scanning strategies and electron beam parameters, particularly when building smaller cross-sectional areas.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"18 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74523878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yongpeng Le, Jingwen Zhang, Gang Kong, Shuao Li, Chunshan Che
{"title":"Phytic acid pretreatment activate hot-dip galvanized steel to enhance the corrosion resistance of silane film","authors":"Yongpeng Le, Jingwen Zhang, Gang Kong, Shuao Li, Chunshan Che","doi":"10.1088/2051-672x/acfb9c","DOIUrl":"https://doi.org/10.1088/2051-672x/acfb9c","url":null,"abstract":"Abstract In this work, hot-dip galvanized steel were pretreated with different concentrations of phytic acid(C 6 H 8 O 24 P 6 ,PA) solution to obtain more hydroxyl groups, which act as an activated site on the surface of zinc layer. Then, 3-Glycidoxypropyl methyldiethoxysilane (GPTMS)/tetraethylorthosilicate (TEOS) hybrid silane film was prepared. The structure and morphology of film were tested by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM-EDS). The results indicated that phytic acid treatment at a concentration of 5 ml l −1 improved the denseness and uniformity of the silane film while increasing its thickness. The results of electrochemical impedance spectroscopy (EIS) showed that the corrosion impedance of silane films under PA pretreatment was greatly improved. Furthermore, there were less rusts after 120 h salt spray test.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135388771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}