Surface Topography: Metrology and Properties最新文献_第6页

Effect of ultrasonic surface shot peening on the microstructure and properties of Cu-8Cr alloy 超声表面喷丸强化对Cu-8Cr合金组织和性能的影响

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-07-05 DOI: 10.1088/2051-672X/ace467

Xiang Wang, Changxi Jiang, Tao Liu, Dan Qin, Baoquan Chen, Xuehui Zhang, Tongxiang Liang

{"title":"Effect of ultrasonic surface shot peening on the microstructure and properties of Cu-8Cr alloy","authors":"Xiang Wang, Changxi Jiang, Tao Liu, Dan Qin, Baoquan Chen, Xuehui Zhang, Tongxiang Liang","doi":"10.1088/2051-672X/ace467","DOIUrl":"https://doi.org/10.1088/2051-672X/ace467","url":null,"abstract":"Surface nanocrystalline layers were prepared on Cu-8Cr alloy using ultrasonic shot peening (USSP) technique by controlling the pellet size and shot peening time. The tissue morphology, microstructure, surface hardness, surface strength and corrosion resistance of the generated surface nanolayers were systematically characterized using x-ray diffractometer (XRD), scanning electron microscope (SEM), and the corresponding test methods. The results showed that the USSP treatment did not change the surface phase of Cu-8Cr alloy, but only refined the surface grains into nanocrystals. The pellet size and shot peening time had a large effect on the surface properties of Cu-8Cr alloy. The best overall surface properties were obtained with a shot size of 2 mm and a shot time of 30 min The average grain size of the nano-layer is about 66 nm, the surface hardness is increased to 126.69 HV0.05, the tensile strength reached 417 MPa, and the corrosion resistance of the alloy is significantly enhanced. The USSP treatment provides a new method for the preparation of CuCr alloys with excellent surface properties.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"35 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89316324","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 topography on electrical contact resistance of copper-based materials 形貌对铜基材料接触电阻的影响

IF 2.7 3区材料科学

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

Bruno Alderete, U. Pranav Nayak, F. Mücklich, S. Suárez

{"title":"Influence of topography on electrical contact resistance of copper-based materials","authors":"Bruno Alderete, U. Pranav Nayak, F. Mücklich, S. Suárez","doi":"10.1088/2051-672X/acdfea","DOIUrl":"https://doi.org/10.1088/2051-672X/acdfea","url":null,"abstract":"The design of an electrical contact is crucial to ensure optimal performance, reliability, and efficiency of connectors. One key aspect is the surface quality of the contacting bodies—among other factors such as material selection, contact geometry, etc. In this work, we evaluated the influence on electrical contact resistance (ECR) of a smooth copper-based surface (brass, bronze, and tin-plated copper) when contacted against surfaces with different degrees of roughness. Furthermore, a carbon nanotube (CNT) coating was proposed with the goal of mitigating the topography-induced influence of the textured counter electrodes. The electrodes and counter electrodes were thoroughly characterized to understand the contacting mechanisms through numerical modeling,—namely, Greenwood-Williamson and Jackson-Green models—as well as using a practical-oriented slope analysis. Load-dependent ECR measurements were carried out to quantify the effect of roughness on contact resistance. When contacting against brass and bronze, a clear correlation between roughness and ECR can be established, with higher roughness equating to lower ECR In tin-plated copper, on the other hand, this hierarchy is not as well defined due to the ease with which the tin plating deforms, thus enabling the penetration of outstanding asperities and consequently establishing a better electrical contact. CNT-coated counter electrodes showed promising results, partially confirming the hypothesis proposed. However, unforeseen topography-related interactions with the CNT coating produced exceptions in the ECR measurements. Nonetheless, for most cases studied the coating did mitigate the influence of roughness.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"744 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76891158","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

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

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

Influence of tool pin profiles on waviness and natural frequency during friction stir welding of Al-Li alloys plates 刀销轮廓对铝锂合金板搅拌摩擦焊波形和固有频率的影响

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-05-16 DOI: 10.1088/2051-672X/acd5ea

Sanjeev Kumar, Ashish Soni, J. Katiyar, Sachin Kumar, B. S. Roy

{"title":"Influence of tool pin profiles on waviness and natural frequency during friction stir welding of Al-Li alloys plates","authors":"Sanjeev Kumar, Ashish Soni, J. Katiyar, Sachin Kumar, B. S. Roy","doi":"10.1088/2051-672X/acd5ea","DOIUrl":"https://doi.org/10.1088/2051-672X/acd5ea","url":null,"abstract":"The third generation of Al-Li 2050-T84 alloy was primarily used in aerospace industries due to its exceptional potential for weight saving, high strength, and increased fatigue crack growth resistance. In the present research, three different types of tool pin profiles, namely, hybrid, taper threaded, and triangular, were used to join 2050-T84 Al-Li alloy by using Friction Stir Welding (FSW) at a constant rotational speed of 23.33 rotation/second with a traverse speed of 0.003 meters per second and tilt angle of 2°. The research explored the effect of different tools on weld bead structure, waviness and natural frequency of welded plates. The experimental results show that the hybrid tool pin side generates 10.9% higher heat than the threaded taper tool and 25.8% higher than the triangular tool. Moreover, the hybrid tool produces 50.1% lower waviness of welded specimens than the threaded taper tool and 55.7% lower than the triangular tool at the nugget zone (NZ). The research established that a hybrid tool pin profile is advantageous as it generates a higher frequency and lower acceleration under the applied load in friction stir welded specimens.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"160 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79852726","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

Effects of argon plasma pretreatment of Si wafers on Si-Si bonding based on Mo/Au interlayers 硅晶片氩等离子体预处理对Mo/Au夹层Si-Si键合的影响

IF 2.7 3区材料科学

Surface Topography: Metrology and Properties Pub Date : 2023-05-15 DOI: 10.1088/2051-672X/acd569

Y. Qu, H. Bai, Wenbo Hu, Yuan Yuan, Shengli Wu, Hong Wang, H. Fan

{"title":"Effects of argon plasma pretreatment of Si wafers on Si-Si bonding based on Mo/Au interlayers","authors":"Y. Qu, H. Bai, Wenbo Hu, Yuan Yuan, Shengli Wu, Hong Wang, H. Fan","doi":"10.1088/2051-672X/acd569","DOIUrl":"https://doi.org/10.1088/2051-672X/acd569","url":null,"abstract":"To improve the bonding quality of Si-Si wafers bonded based on Mo/Au intermediate layers at room temperature, the surfaces of Si wafers were pretreated with argon plasma, and the effect of argon plasma pretreatment on Si-Si wafer bonding was analyzed by combining experimental and theoretical methods. Owing to the plasma treatment of Si wafers, the surface roughness of Si wafers was significantly reduced, and the bonded Si-Si samples had lower interfacial voidage. The average bonding strength of 11.46 MPa for the argon plasma pretreated Si-Si bonded samples is much higher than the bonding strength of 4.23 MPa for the unpretreated Si-Si bonded samples. The analysis of the fractured surface revealed that the fracture of the Si-Si bonded samples without argon plasma treatment occurred mainly at the Mo/Si interface, while the fracture of the plasma-treated Si-Si bonded samples arose mainly within the bulk Si. Molecular dynamics (MD) simulations suggest that strong atomic diffusion takes place at the Mo/Au interface, while Mo atoms hardly diffuse into the bulk Si. These results indicate that argon plasma pretreatment not only cleans and activates the Si wafer surface but also makes the Si wafer surface smooth, which helps to enhance the deposited Mo/Au film quality and the adhesion between the Mo film and the Si wafer.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"13 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74113044","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