Surface Topography: Metrology and Properties最新文献_第9页

Influence of bearing waviness on the lubrication performances of coupled journal-thrust water-lubricated bearings 轴承波纹度对轴向-推力耦合水润滑轴承润滑性能的影响

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-06-01 DOI: 10.1088/2051-672X/acdc3f

Hengguang Zhang, Jianlin Cai, Tianyou Yang, Shouan Chen, Dongxing Tang, Jiaxu Wang

{"title":"Influence of bearing waviness on the lubrication performances of coupled journal-thrust water-lubricated bearings","authors":"Hengguang Zhang, Jianlin Cai, Tianyou Yang, Shouan Chen, Dongxing Tang, Jiaxu Wang","doi":"10.1088/2051-672X/acdc3f","DOIUrl":"https://doi.org/10.1088/2051-672X/acdc3f","url":null,"abstract":"The purpose of this study is to discuss the effect of the bearing waviness on the lubrication performances of coupled journal-thrust water-lubricated bearings using an elastohydrodynamic lubrication model. The results of the numerical model are compared to the published experimental data to verify the validity of the numerical model. The load capacity and maximum fluid pressure under different parameters of waviness of coupled journal-thrust bearings are calculated by numerical model, and then the influence of the bearing waviness on the performance of coupled journal-thrust water-lubricated bearings is analyzed. The simulation results show that the waviness amplitude has great influence on the bearing performances and the effect becomes increasingly pronounced with the growth of waviness amplitude. For the waviness of journal bearings, the performances are more sensitive to the waviness arranged in bearing circumferential direction than radial direction. For the waviness of thrust bearings, the presence of circumferential waviness can improve the load capacity, while radial waviness can reduce the load capacity. With the increase of wavelength, the load capacity and maximum fluid pressure have similar periodic changes, but the change is irregular. More investigations are required regarding the influence of geometrical shape of the waviness and its wavelength on the performance of the bearing.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"538 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74528383","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}

引用次数: 2

The intensity enhancement of transmission small angle x-ray scattering from nanostructures with a high aspect ratio 高纵横比纳米结构透射小角x射线散射的强度增强

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-06-01 DOI: 10.1088/2051-672X/acdcad

W. Fu, B. He, W. L. Wu

引用次数: 0

An investigation on the adhesion of dual-scale micro-nano composite structure on the surface of aluminum 双尺度微纳复合结构在铝表面的粘附性研究

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-06-01 DOI: 10.1088/2051-672X/acdb89

Dong Yao, Guangfeng Shi, Jingran Zhang, S. Meng

{"title":"An investigation on the adhesion of dual-scale micro-nano composite structure on the surface of aluminum","authors":"Dong Yao, Guangfeng Shi, Jingran Zhang, S. Meng","doi":"10.1088/2051-672X/acdb89","DOIUrl":"https://doi.org/10.1088/2051-672X/acdb89","url":null,"abstract":"Adhesion is a crucial characteristic of hydrophobic surfaces that significantly impacts their practical applications. This paper proposes an innovative method for preparing a dual-scale micro-nano composite structure surface by combining mechanical ruling and anodic oxidation, which demonstrates great potential in enhancing hydrophobic surface properties. Through the analysis of the influence of micro-groove depth on the adhesion of hydrophobic surfaces, it has been discovered that micro-groove dimensions can be used to control surface adhesion while maintaining hydrophobicity, without complex chemical modifications. These findings present a promising approach for tailoring the properties of hydrophobic surfaces to suit specific applications. Compared with the single-scale micro-groove array structures, the surface roughness of the dual-scale micro-nano composite structures is significantly increased, and the contact angle of the water droplet is significantly increased. At the same time, the hydrophobicity and adhesion of the surface of the dual-scale micro-nano composite structures were analyzed. The results show that after anodizing, the contact angle of the dual-scale micro-nano composite structure surface increases, and the surface adhesion can be controlled by adjusting the structural parameters of the micro-groove and the anodizing process parameters, to ensure that the surface presents hydrophobic property while realizing the controllable adhesion of the hydrophobic surface. In this paper, dual-scale micro-nano composite structures fabricated by the composite method have achieved hydrophobic properties, and the surface adhesion can be effectively controlled by adjusting the processing parameters. This method has certain reference significance for the preparation of the controllable adhesive hydrophobic surface and lays a foundation for the further study of the controllable adhesive hydrophobic surface.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"43 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73040105","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}

引用次数: 0

All-laser route for anti-fouling superhydrophobic albronze fabrication and non-contact microbial detection 用于防污超疏水铝青铜制造和非接触微生物检测的全激光路线

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-06-01 DOI: 10.1088/2051-672X/acddfe

Lisha Fan, Tianzhen Zhao, Qiangqiang Qian, Y. Zhu, Guolong Wu, Huaping Wu, Lianbo Guo, Jianhua Yao

{"title":"All-laser route for anti-fouling superhydrophobic albronze fabrication and non-contact microbial detection","authors":"Lisha Fan, Tianzhen Zhao, Qiangqiang Qian, Y. Zhu, Guolong Wu, Huaping Wu, Lianbo Guo, Jianhua Yao","doi":"10.1088/2051-672X/acddfe","DOIUrl":"https://doi.org/10.1088/2051-672X/acddfe","url":null,"abstract":"Biofouling leading to clog is one of the severe issues underwater valve components are facing today. Establishing a superhydrophobic barrier against microorganisms for underwater albronze components is hence of great significance. We demonstrate an all-laser route for superhydrophobic albronze surface fabrication and non-contact microbial diagnostics. Laser-textured albronze surfaces with well-defined periodic valleys and crests exhibit excellent superhydrophobicity with a contact angle up to 151 ± 1° and a contact angle hysteresis of 0.9 ± 0.1°, more than twice that of an original albronze surface (66 ± 2°). The theoretical wettability diagram of water droplets on laser-textured albronze surfaces shows that the surface wettability transits from hydrophilicity towards hydrophobicity as the surface undulation level elevated, matching well with the experimental observation. According to surface chemistry analysis, carbonyl groups on the albronze surfaces are extensively eliminated by laser texturing and vacuum heating treatment, which contributes to the wettability transformation. The anti-fouling performance of the laser-textured albronze surfaces was comparatively studied in chalk ash aqueous solution, starch solution, and microbial suspension, respectively. Laser-induced breakdown spectroscopy was applied for non-contact microbial diagnostics. Greatly enhanced resistance to biofouling on laser-textured albronze surfaces was confirmed. An all-laser route for anti-fouling superhydrophobic albronze surface fabrication and non-contact microbial diagnostics show great promise for next-generation underwater equipment upgrade and on-site monitoring.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"2 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81887271","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}

引用次数: 0

Experimental analysis of anodic coating process parameters of Al 5754 alloy by response surface method 响应面法对Al 5754合金阳极涂层工艺参数的实验分析

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-06-01 DOI: 10.1088/2051-672X/acdaaf

I. Celik, F. Erdemir, Isa Coruhlu

{"title":"Experimental analysis of anodic coating process parameters of Al 5754 alloy by response surface method","authors":"I. Celik, F. Erdemir, Isa Coruhlu","doi":"10.1088/2051-672X/acdaaf","DOIUrl":"https://doi.org/10.1088/2051-672X/acdaaf","url":null,"abstract":"Aluminum 5754 alloy appears as a candidate material for many engineering applications in terms of its lightness and strength values. The surface properties of this alloy need to be improved for applications where there is surface damage such as friction and wear. In this study, Central composite design was applied to investigate the influences of anodic coating process parameters (voltage, coating time and grit size) on the response (i.e. surface roughness and coating thickness). The competence of the mathematical models recognized, and the importance of the regression coefficients were studied by ANOVA. The initial surfaces of the samples were sanded with 400, 800 and 1200 grit size and surfaces with 3 different roughnesses were obtained. Al 5754 specimens were anodic coated at 8 V, 12 V and 16 V voltages and combinations of time parameters of 10, 20 and 30 min The ANOVA results show that the designed models by RSM for average coating thickness and surface roughness are statistically important at the confidence level of 95%, and 80%, respectively. Maximum anodic coated layer of 29 μm was obtained at surface prepared with 1200 grit size, at 16 V of voltage and used for 30 min of anodizing time. The lowest roughness value of 0.676 μm was obtained at the surface was prepared with 1200 grit size, 8 V of voltage and anodizing time of 10 min.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"4 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81138691","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}

引用次数: 0

Surface tribological and electrochemical properties of TiAlSiN coating in seawater TiAlSiN涂层在海水中的表面摩擦学和电化学性能

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-05-31 DOI: 10.1088/2051-672X/acda4c

A. Liu, J. Deng, Runzhou Tian

{"title":"Surface tribological and electrochemical properties of TiAlSiN coating in seawater","authors":"A. Liu, J. Deng, Runzhou Tian","doi":"10.1088/2051-672X/acda4c","DOIUrl":"https://doi.org/10.1088/2051-672X/acda4c","url":null,"abstract":"To investigate the effects of friction surface and electrochemical properties on the tribological behavior of TiAlSiN coatings in seawater, the tribological properties of TiAlSiN coatings in air and seawater are comparatively studied using a ball-on-disk tribometer with Si3N4 ceramic balls as the counter material. The results show that under both friction conditions, the wear rate of TiAlSiN coating is decreased compared with 316 l steel substrate, and the coating presents a good protective effect. When friction occurs in air, the abrasive debris in the wear area cannot be discharged in time, resulting in the accumulation of abrasive debris and accelerating the wear of the coating. When friction occurs in seawater, although seawater is corrosive, the lubricating barrier surface formed by the friction oxide during the friction process significantly reduces the wear rate of the coating. In addition, the excellent electrochemical properties and the dense coating microstructure improve the tribocorrosion resistance of the TiAlSiN coating in seawater. It proves that friction surface has a great impact on the tribological performance of TiAlSiN coatings, and how to form a more favorable friction layer in the tribochemical environment is worthy of further research in the field of marine equipment.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"60 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80724259","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}

引用次数: 0

A measure of perceived quality to secure the polishability of new paint systems 确保新涂料系统可抛光性的一种可感知质量的度量

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-05-24 DOI: 10.1088/2051-672X/acd869

S. Rebeggiani, B. Rosén

{"title":"A measure of perceived quality to secure the polishability of new paint systems","authors":"S. Rebeggiani, B. Rosén","doi":"10.1088/2051-672X/acd869","DOIUrl":"https://doi.org/10.1088/2051-672X/acd869","url":null,"abstract":"The automotive industry continuously strives to reduce their environmental impact. For the paint shop it means to introduce more sustainable paint concepts, while maintaining the production rate and retain the right surface appearance that is crucial for the vehicle’s perceived quality. Today most painted parts are visually inspected and, if needed, manually repaired by abrasive polishing to eliminate spot defects. The repair process consists of one sanding step to remove the defect, and one or two rubbing/polishing steps to restore the surface, but still it tends to be a non-reliable process leaving patterns or clusters of shallow micro scratches seen as three-dimensional shapes moving over the surface when viewed from different angles like holograms. These so called ‘polishing roses’ are hard to detect in artificial light but clearly visible in Sunlight and therefore they constitute a constant quality issue. Accurate polishing procedures in combination with more objective inspection techniques would secure a high surface quality—but what is ‘accurate’? The overall scope of the study was to deepen the knowledge of paint systems to develop test routines for the polishability of coatings already during the development stage, and thereby ease the implementation of new coating systems in production. The study was based on collected process data from professional polishers to define a process window based on key parameters for successful end-of-line repairs of coated surfaces, i.e. strategies minimizing the occurrence of visible polishing traces. A CNC-machine was built up for the purpose to systematically test and evaluate new coating systems and repair procedures. The surface estimation was made by visual inspections as well as by a further developed photometric stereo system providing quantitative images of remaining repair traces.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"25 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83220257","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}

引用次数: 0

Characterization of aperiodic surfaces with mesh-based parameters 基于网格参数的非周期曲面表征

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-05-24 DOI: 10.1088/2051-672X/acd868

Stefanie Stöckel, F. Segel, Sophie Groeger

{"title":"Characterization of aperiodic surfaces with mesh-based parameters","authors":"Stefanie Stöckel, F. Segel, Sophie Groeger","doi":"10.1088/2051-672X/acd868","DOIUrl":"https://doi.org/10.1088/2051-672X/acd868","url":null,"abstract":"For technical surfaces, it is important to know their functional purpose and to characterize them accordingly. Therefore, ISO 21920–2 in 2D and ISO 25178–2 in 3D offer parameters that can assess surface functional properties. The topographic portions of a surface, for example hills and dales, can be classified as features and evaluated using feature parameters. However, no parameter exists to describe the spatial distribution of features with regard to the degree of homogeneity for aperiodic surfaces. Here we show the application of the Delaunay triangulation to quantify the spatial distribution respectively the geometric relationship of features. Therefore, the feature points are determined by watershed analysis and the resulting point cloud is meshed in 2D. Based on that mean and standard deviation of the triangle side lengths and the area disorder (AD) are calculated as new parameters. The method is demonstrated for sandblasted and chrome-plated specimens. In addition simulation is used to generate more data for analysis. With the proposed approach the distinction and extent of uniform, homogeneous or inhomogeneous spatial distributions of features with parameter AD can be determined.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"18 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84814931","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}

引用次数: 0

Influence of contact angle on droplet parameters in ellipsoidal wettability model 椭球润湿性模型中接触角对液滴参数的影响

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-05-19 DOI: 10.1088/2051-672X/acd70a

Zehua Xu, Yanbin Zhang, Xiaosen Wang, Kangshuai Li, Qiang He

{"title":"Influence of contact angle on droplet parameters in ellipsoidal wettability model","authors":"Zehua Xu, Yanbin Zhang, Xiaosen Wang, Kangshuai Li, Qiang He","doi":"10.1088/2051-672X/acd70a","DOIUrl":"https://doi.org/10.1088/2051-672X/acd70a","url":null,"abstract":"Contact angle is one of the most important indexes to evaluate the hydrophobicity of solid surface. In order to explore the wetting characteristics of droplets on anisotropic solid surfaces, including contact angle, droplet radius, droplet height, contact radius, contact area and projected area, an ellipsoidal droplet contact angle model was established. Different from the ordinary plane ellipsoidal cap model, the major axis and minor axis of the elliptical cap shape in this model are not exactly the same in different planes. This model studied the relationship between contact angle and interface parameters in different planes. By collecting the droplet size parameters of fluororubber (FKM) prepared by template method, the correctness of the theoretical model was verified. Among them, the maximum error between the theoretical value of droplet radius and the actual measured value was 4.3%, and the maximum error of droplet projected area was 2.1%. It was found that the contact angle was inversely proportional to the droplet-solid contact radius and contact area, and directly proportional to the projected area of the droplet. In addition, for the same droplet on the surface of the same solid material, it was observed that the contact radius between the droplet and the solid was small in the direction of large contact angle. This discovery is helpful to explain the hydrophobic mechanism of the material surface with anisotropic contact angle.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"1 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82345061","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}

引用次数: 0

A review on TIG cladding of engineering material for improving their surface property TIG包覆改善工程材料表面性能的研究进展

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-05-18 DOI: 10.1088/2051-672X/acd6aa

K. Biswas, C. Sahoo

{"title":"A review on TIG cladding of engineering material for improving their surface property","authors":"K. Biswas, C. Sahoo","doi":"10.1088/2051-672X/acd6aa","DOIUrl":"https://doi.org/10.1088/2051-672X/acd6aa","url":null,"abstract":"Different components used in industries like power plant, petrochemical, automobile are subjected to severe wear and corrosion due to high temperature and pressure environments. Therefore, it is necessary to improve those components’ wear and corrosion resistance properties. Different processes like laser cladding, CVD, PVD, and thermal spraying are widely used for upgrading surface properties of material. In recent days, it has been found that many researchers investigated the performance of tungsten inert gas (TIG) welding for cladding of superior material like ceramics, metal etc on different substrate materials. TIG cladding can fulfil the requirements of industries by developing a quality cladded layer with low cost and high productivity. This research paper has made an effort to compile the literature related to TIG cladding process for improving substrate properties. It has been observed that the superior materials like titanium carbide(TiC), silicon carbide(SiC), tungsten carbide(WC), cobalt-based alloys, and nickel-based alloys have been successfully cladded using TIG welding process. Researchers have also observed adequate improvement in properties like microhardness and wear resistance of different grades of steel substrate material, like 304, 316 stainless steel, 1010, and 1020 low-carbon steel. The process is also successfully utilized for cladding of superior material on nonferrous metals like Al, Ti alloy. The TIG clad quality and performance rely on different process parameters like current, scan speed, and shielding gas flow rate and also the properties of coating and substrate material.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"26 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82506502","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}

引用次数: 0