Surface Topography: Metrology and Properties最新文献

{"title":"Effect of stepped Si (001) substrate on Cu thin film growth","authors":"MOHAMMED LABLALI, Hassane Mes-adi, Adil Eddiai, M'hammed Mazroui","doi":"10.1088/2051-672x/acfb9b","DOIUrl":"https://doi.org/10.1088/2051-672x/acfb9b","url":null,"abstract":"Abstract The growth processes of Cu thin film on stepped Si(001) substrate were investigated using molecular dynamics simulation. The modified embedded atom method was used to describe the atomic interaction between Cu-Cu, Si-Si, and Si-Cu. In this study, four different Si(001) substrate configurations were examined: (i) flat Si(001) substrate; (ii) stepped Si surface with 3-monoatomic layers step; (iii) Stepped Si surface with 5-monoatomic layers step; (iiii) stepped surface with 7-monoatomic layers. Our aim here is to investigate the effect of stepped substrate on the structure, the surface roughness, and the morphology of deposited Cu thin film. The results show that the Cu film obtained has a crystalline structure based on the radial distribution function. In addition, the morphology of Cu film is not smooth for the different stepped substrates. More precisely, the surface roughness increases when the substrate presents a step and rises with the augmentation of the step height. On the other hand, our results reveal that the penetration of Cu atoms in the simplest case of the flat configuration is limited to the top layer of the substrate. While for the stepped substrate, our findings show that the penetration in the stepped substrate is more important and deeper within the upper terrace compared to the lower terrace. Furthermore, the numerical calculations demonstrate that the step height has no significant effect on the penetration of Cu atoms on the Si(001) stepped substrate. These results are appropriate for the deposition of copper atoms into the stepped substrate of silicon.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"60 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":"135388777","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":"Preparation and characterization of Ni-Co-TiN/CeO₂ composite coating by jet electrodeposition for improved mechanical and anti-corrosion properties","authors":"Yuanlong Chen, Huigui Li, Cheng Fang, Weiping Deng, Fankai Zhu, Gaoqing He, Zongjun Tian, Wei Jiang","doi":"10.1088/2051-672x/acf511","DOIUrl":"https://doi.org/10.1088/2051-672x/acf511","url":null,"abstract":"Abstract The Ni-Co alloy was coated with Ni-Co-TiN/CeO 2 by Jet electrodeposition to enhance the properties of Nickel-Cobalt (Ni-Co) alloy. The morphologies, texture orientation, microhardness, coating adhesion, wear resistance, and corrosion resistance of Ni-Co-TiN/CeO 2 composite coatings were characterized. The influences of concentration of mixed particles (micron-TiN and nano- CeO 2 ) on microstructural, surface properties, mechanical properties and anti-corrosion performance of the composite coatings were studied. The addition of nano-mixed particles changed the morphology of Ni-Co-TiN/CeO 2 composite coating from large cellular protrusion structures to fine granular structures, the mechanical properties and anti-corrosion performance of Ni-Co-TiN/CeO 2 composite coatings were improved. The composite coating exhibited superior microhardness, bonding force, wear resistance and anti-corrosion performance, when the concentration of mixed particles was 4 g l −1 . This work contributed to the development of a variety of micro- and nanoparticle phase-enhanced metal-based composite coatings.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"217 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":"136310764","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":"Effects of pulse energy and contact foil thickness on the surface integrity of LY2 aluminum alloy subjected to laser shock wave planishing technology","authors":"Lei Wu, F. Dai, Shu Huang, Xizhang Chen","doi":"10.1088/2051-672X/acf510","DOIUrl":"https://doi.org/10.1088/2051-672X/acf510","url":null,"abstract":"Reducing the surface roughness is an effective way to improve the fatigue performance of aero-engine blades. In this paper, the milled surface of LY2 aluminum alloy was processed by a laser shock wave planishing (LSWP) technology, and the influence of the laser pulse energy and the contact foil thickness on the surface integrity were studied. The results showed that the thinner the contact foil and the higher the pulse energy were, the higher the removal rate of tool marks (the degree to which the milled topography of LY2 aluminum alloy surface is flattened) was. On the contrary, the thicker the contact foil and the lower the pulse energy were, the lower the removal rate of tool marks was. It will cause ‘center depression’ under LSWP with a thin contact foil and a high laser pulse energy, resulting in an increase of surface roughness, a large difference in residual stress and micro-hardness between the center and the laser spot edge. In the overlapping LSWP experiment, when the contact foil thickness matched the appropriate laser pulse energy, the milled surface was flattened without boundary effect, and in 67% overlapping experiment, a thicker contact foil can be used to achieve the same high-quality surface as in 50% overlapping experiment.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"237 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78534850","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":"Brazilian Tribology: origin, status quo and future perspectives","authors":"J. D. de Mello, H. Costa","doi":"10.1088/2051-672X/ace83e","DOIUrl":"https://doi.org/10.1088/2051-672X/ace83e","url":null,"abstract":"This first regional issue published in STMP highlights the potential and importance of the research carried out in Latin America regarding surface engineering and tribology. In order to celebrate this important initiative, a complete historical account of Brazilian tribology is presented for the first time. It initiates with the first steps of Brazilian tribology in the 1980s, followed by the evolution and expansion of tribology research both in academic centres and industry. Focus is given to two outstanding achievements of Brazilian tribology: the fully flexible engines that run at any proportion of ethanol and gasoline and a fully innovative, completely oil-less family of hermetic compressors. The status-quo of the current research groups on tribology is described. Finally, the future trends envisaged by the Brazilian tribology community are presented.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"12 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89695374","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 surface energy on the shear strength of cfrp/steel adhesive joints","authors":"Yefa Hu, Shitan Tong, Jinguang Zhang, Xu Xia, Xianglong Wen","doi":"10.1088/2051-672X/acf32d","DOIUrl":"https://doi.org/10.1088/2051-672X/acf32d","url":null,"abstract":"Carbon Fiber Reinforced Plastic (CFRP) and metal adhesive joints have the advantages of lightweight structure, simple process, and no disruption of fiber continuity. The strength of adhesive joints has been the weak point of this structure. In order to provide a reference for the safe design of CFRP adhesive joints, the effect of the different surface energy of metal surfaces on the shear strength of CFRP/steel adhesive joints was studied. The surface energy of the metal surface was changed by changing the roughness of the metal surface. Test pieces with different roughness were designed. Roughness measurement tests, contact angle and surface energy measurement tests, and shear strength tests were conducted. It reveals the evolution of surface energy on the shear strength of CFRP/steel joints. The results show that the surface roughening changes the solid–liquid contact angle, enhances the solid surface energy, increases the wettability and adhesive capacity of the adhesive, and ultimately improves the shear strength. Therefore, improving the surface energy of stainless steel surfaces can significantly improve the shear strength of CFRP/stainless steel adhesive joints.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"1 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89883981","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":"Hot deformation and fatigue behaviour of a zinc base doped biocompatible material: characterization of plasma spray coating on surface","authors":"V. B, Suresh Sonagiri, S. S","doi":"10.1088/2051-672X/acf234","DOIUrl":"https://doi.org/10.1088/2051-672X/acf234","url":null,"abstract":"Composite materials are natural or man-made substances put into the body to turn a living cell into a working organ. Bone tissue and biocompatibility are emerging as an alternative approach to regenerating bone due to some distinct advantages over autografting. This research aimed to fabricate a novel porous scaffold that can be utilized as a bone substitute. Zn-nHApx-Srx (x = 0, 3, 6, 9) was selected by different weight ratios and synthesized using the powder metallurgy method. The utilization of nanohydroxyapatite (Ca10(PO4)6(OH)2) is due to its excellent biocompatibility with the human body. Polylactic-co-glycolic acid (PLGA) is incorporated to get enhanced biological performance. Plasma spray coating was performed on a zinc substrate using pure and doped biocomposites calcined at 800 °C. The biocomposites tensile strength increased between 0.4 and 19.8 MPa by increasing Zn and Sr weight ratios. In addition, 3% Sr/2.5% Zn with 2% of nHAp-PLGA composite showed improved hardness, which is beneficial for resembling bone tissue and die-casting fittings in automobile manufacturing applications. Mechanical properties, FT-IR, hot deformation behaviour, and SEM techniques help us understand the behaviour of Zn-Sr-nHAp in a vial containing PLGA. The highest ultimate tensile strength of 182 MPa and improved flow softening behaviour are achieved in a coated Zn/6% (nHAp-Sr) mixture suitable for biodegradable implant applications.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"565 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85729144","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 nitriding temperature and its effects on the corrosion and wear resistance of 304 austenitic stainless steel","authors":"Tianxiang Peng, Liang Wang","doi":"10.1088/2051-672X/acf235","DOIUrl":"https://doi.org/10.1088/2051-672X/acf235","url":null,"abstract":"Rapid plasma nitriding of AISI 304 austenitic stainless steel (304SS) was carried out at 440, 460 °C and 480 °C for 1 h in a mixture of NH3 and N2 with a ratio of 1:2. The phase composition, thickness of nitrided layer and properties of wear, and corrosion resistance were evaluated. After nitriding at 480 °C for 1 h, a 6.3 μm the thick nitrided layer was achieved. The influence of the nitriding process on the microstructure, morphology, hardness, corrosion, and wear resistance of the nitrided layers were also studied. Compared with unnitrided 304SS, the wear and corrosion resistances were substantially improved.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"89 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81807945","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":"Fabrication of superhydrophobic surface by a dimensional change in surface topography of microchannel on polymer substrate through induction-aided hot embossing: parametric investigation and optimization","authors":"Swarup Deshmukh, Pinal Rana, ARJYAJYOTI GOSWAMI","doi":"10.1088/2051-672x/acee9d","DOIUrl":"https://doi.org/10.1088/2051-672x/acee9d","url":null,"abstract":"Abstract Hot embossing (HE) is a micro-fabrication technique employed to create micron-scale patterns on the polymer substrate. An in-house induction-assisted hot embossing (IHE) setup was fabricated to complete the embossing in a short duration as compared to traditional hot embossing process. This work alters the polymer surface topography to make it superhydrophobic for self-cleaning. Fiber laser machining was used to produce four-microchannel designs on an Aluminum-6061 plate in which the microchannel width was varied from 600 μ m to 150 μ m while maintaining a constant adjacent distance of 300 μ m. This textured plate is employed as a mold in the IHE setup. IHE process parameters, embossing temperature, pressure, time, and deembossing temperature were varied to emboss the mold designs on a polyethylene terephthalate substrate. Thereafter, the embossed microchannel height, surface roughness, and water contact angle perpendicular to the embossed microchannels (WCA ⟂ ) were calculated. The parametric analysis examined how operational factors affected the output. The experiment was done as per the central composite design (experimental design) part of the design-of-experiments useful in the response surface model. Parametric research demonstrates that embossed microchannel height and width had a maximum effect on WCA ⟂ . Type-IV microchannels with 150 μ m width demonstrated the highest WCA ⟂ . The WCA ⟂ was mostly impacted by embossed microchannel height; hence a regression model was created using type-IV channel height data. Analysis of variance showed that embossing temperature mainly impacts microchannel height. The recently invented Jaya-algorithm optimized this model to increase embossed microchannel height and WCA ⟂ . Setting the parameters at the best level predicted by Jaya-algorithm yielded an embossed microchannel height inaccuracy of 2.18%. The WCA ⟂ measured on the surface of a sample prepared at the best parameters was found to be 154.71° <?CDATA $pm $?> <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\"> <mml:mo>±</mml:mo> </mml:math> 2°. Lastly, FTIR (Fourier-transform-infrared-spectroscopy) test showed no chemical composition change between the embossed and bare samples.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135971384","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":"Tribological properties of oil-impregnated porous polyimide modified by rare-earth compounds","authors":"Li Liu, Jinyang Liu, Shunli Yin, Kaiwen Li, Lichen Hua, Ning-ning Zhou, Xudong Hu, Jinbang Li","doi":"10.1088/2051-672X/acee9b","DOIUrl":"https://doi.org/10.1088/2051-672X/acee9b","url":null,"abstract":"Porous polyimide (PPI) exhibits good tribological performances due to excellent oil-storage properties. Porous structure could store lubricant but also make PPI materials difficult to be strengthened by most fillers, because fillers will destroy the pore structure and reduce the strength significantly. Rare-earth compounds (RECs) have high surface activity, which allow them to bond well with polymer. In this study, the tribological properties of REC modified PPIs were investigated using a ball-on-disc tribometer, along with an analysis of oil-impregnated properties, including oil content, oil retention, oil contact angle and oil absorption speed. The mechanical properties, including hardness (Shore D), impact strength and tensile strength, were tested to evaluate the effect of RECs. The results show that CeF3 and LaF3 fillers can lead to an increase of about 40% in oil content of PPI. PrF3 modified PPI were found to have better oleophilic properties, as the oil contact angle reduced 33% compared with pure PPI and oil retention could reach 88% after 120 min centrifugation. Moreover, PrF3 can enhance the surface hardness, impact strength and wear resistance performance of PPI despite a slight decrease in tensile strength. Better oil-impregnation and mechanical properties of PPI modified by PrF3 effectively reduce the friction and wear.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"11 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75519799","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":"Electrochemical corrosion behaviour of rolled dual phase Mg-8Li-graphene composite","authors":"K. V, P. Vignesh, N. Kumar, K. S","doi":"10.1088/2051-672X/acee9c","DOIUrl":"https://doi.org/10.1088/2051-672X/acee9c","url":null,"abstract":"In this research, the effect of interrupted rolling on electrochemical corrosion behaviour of Mg-8Li-xGr composite is investigated. Graphene reinforced composite was developed by using stir casting route and rolled with different reductions in thickness of 50, 75 and 90%. Investigation on potentiodynamic polarization of rolled composite depicts that increase in reduction percentage increases the corrosion rate of the developed composite. Electrochemical impedance studies reveal that composite reduced at 50% thickness exhibits higher charge transfer resistance of 80 Ωcm2. Nyquist plot depicts occurrence of inductance loop that reveals occurrence of oxide layer breakage. Addition of graphene up to 0.4 wt% increase the corrosion resistance and further addition exhibits adverse effect in corrosion behaviour due to the galvanic effects. The occurrence of pitting corrosion is evidenced from corrosion surface morphology.","PeriodicalId":22028,"journal":{"name":"Surface Topography: Metrology and Properties","volume":"16 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75013644","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}