Pub Date : 2017-08-04DOI: 10.1504/IJSURFSE.2017.10006724
R. Bendikiene, T. Pilkaitė, L. Kuliavas
Feedstock material behaviour in thermal spraying process under different parameters is essential in producing repeatable and controllable coatings. Article reviews three regimes of spraying, with a focus on the wear behaviour under the different conditions. RocDur 37 was selected as feedstock material. Regimes applying different feed were used: 1.43 cm/s (A), 1.85 cm/s (B), 0.88 cm/s (C); rotation speed - 1.33 s−1. Wear was tested on the contactsliding, edge-wear and abrasive-wear machines. Regimes B and C showed lower wear in contact-sliding and edge-wear. Hydro-abrasive test showed similar wear of coatings obtained using all parameters, it can be concluded that RocDur 37 coatings are suitable for work in abrasive conditions. In this type of wear technological parameters do not affect wear. The optimum technological regimes: rotation speed 1.33 s−1, longitudinal feed 0.88 cm/s, and 11 passes.
{"title":"Wear study of coatings obtained using different parameters of thermal spraying","authors":"R. Bendikiene, T. Pilkaitė, L. Kuliavas","doi":"10.1504/IJSURFSE.2017.10006724","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.10006724","url":null,"abstract":"Feedstock material behaviour in thermal spraying process under different parameters is essential in producing repeatable and controllable coatings. Article reviews three regimes of spraying, with a focus on the wear behaviour under the different conditions. RocDur 37 was selected as feedstock material. Regimes applying different feed were used: 1.43 cm/s (A), 1.85 cm/s (B), 0.88 cm/s (C); rotation speed - 1.33 s−1. Wear was tested on the contactsliding, edge-wear and abrasive-wear machines. Regimes B and C showed lower wear in contact-sliding and edge-wear. Hydro-abrasive test showed similar wear of coatings obtained using all parameters, it can be concluded that RocDur 37 coatings are suitable for work in abrasive conditions. In this type of wear technological parameters do not affect wear. The optimum technological regimes: rotation speed 1.33 s−1, longitudinal feed 0.88 cm/s, and 11 passes.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"11 1","pages":"262"},"PeriodicalIF":0.8,"publicationDate":"2017-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43205194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-04DOI: 10.1504/IJSURFSE.2017.085623
X. Cheng, D. Wei, Zhengyi Jiang, Lai-zhu Jiang
Stainless steels are iron-based alloys that contain a minimum of about 12% Cr. They have been classified by microstructure at room temperature. Two stainless steel grades 304 and 410L were studied in this paper. Hot rolling was performed on a Hille 100 experimental rolling mill under various reductions with consideration of the oxide scale thickness controlled by oxidation time. The experimental results show that the deformation behaviour of the oxide scale on the stainless steel 304 is sensitive to its thickness and exhibits higher resistance to be deformed. However, the reduction in thickness plays an important role in the uniformity of the oxide scale deformation for the stainless steel 410L. Friction coefficients were calculated and compared. Simulations results show that the reduction in thickness and initial surface roughness play roles on final surface roughness. Steel substrate surface is rougher than that of the oxide scale at different reductions.
{"title":"Analysis of oxide scale deformation and surface roughness characterisation in hot rolling of stainless steels","authors":"X. Cheng, D. Wei, Zhengyi Jiang, Lai-zhu Jiang","doi":"10.1504/IJSURFSE.2017.085623","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.085623","url":null,"abstract":"Stainless steels are iron-based alloys that contain a minimum of about 12% Cr. They have been classified by microstructure at room temperature. Two stainless steel grades 304 and 410L were studied in this paper. Hot rolling was performed on a Hille 100 experimental rolling mill under various reductions with consideration of the oxide scale thickness controlled by oxidation time. The experimental results show that the deformation behaviour of the oxide scale on the stainless steel 304 is sensitive to its thickness and exhibits higher resistance to be deformed. However, the reduction in thickness plays an important role in the uniformity of the oxide scale deformation for the stainless steel 410L. Friction coefficients were calculated and compared. Simulations results show that the reduction in thickness and initial surface roughness play roles on final surface roughness. Steel substrate surface is rougher than that of the oxide scale at different reductions.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"11 1","pages":"241"},"PeriodicalIF":0.8,"publicationDate":"2017-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJSURFSE.2017.085623","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45393039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-04DOI: 10.1504/IJSURFSE.2017.10006726
V. Dillibabu, M. Duraiselvam, M. Khan, K. Naveena
Laser surface treatment was performed on nickel-based superalloy to improve their high temperature tribological properties for enhanced service life specifically in gas turbine applications. The laser power and scan speed were strategically controlled to optimally refine the microstructure. The metallurgical and mechanical modifications in the treated area were studied to understand the refining mechanism. The coarser grains in the base material re-orient to fine dendrites during laser surface melting. The equiaxed grains are refined with increased laser power and reduced interaction time under the influence of higher cooling rate. The finely refined grains improve the microhardness of the treated surface. The tribological performance and its mechanism of the treated surfaces were evaluated at room temperature and at 500°C. A significant reduction in the wear rate was observed for the laser treated surface, where abrasion and adhesion found to be the dominant wear mechanisms.
{"title":"High-temperature tribological characterisation of laser surface melted Ni-based superalloy","authors":"V. Dillibabu, M. Duraiselvam, M. Khan, K. Naveena","doi":"10.1504/IJSURFSE.2017.10006726","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.10006726","url":null,"abstract":"Laser surface treatment was performed on nickel-based superalloy to improve their high temperature tribological properties for enhanced service life specifically in gas turbine applications. The laser power and scan speed were strategically controlled to optimally refine the microstructure. The metallurgical and mechanical modifications in the treated area were studied to understand the refining mechanism. The coarser grains in the base material re-orient to fine dendrites during laser surface melting. The equiaxed grains are refined with increased laser power and reduced interaction time under the influence of higher cooling rate. The finely refined grains improve the microhardness of the treated surface. The tribological performance and its mechanism of the treated surfaces were evaluated at room temperature and at 500°C. A significant reduction in the wear rate was observed for the laser treated surface, where abrasion and adhesion found to be the dominant wear mechanisms.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"11 1","pages":"273"},"PeriodicalIF":0.8,"publicationDate":"2017-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47899947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-04DOI: 10.1504/IJSURFSE.2017.085622
D. Mukherjee, R. Polini, V. Valentini, S. Rotter, J. Mendes
The ultrasonic seeding of a substrate with diamond suspensions enriches the surface with nanometre-sized seeds that coalesce and form a closed conformal film during early stages of diamond growth. To get insight on seeds early growth and evaluate the seeding efficiency of different suspensions, silicon samples were exposed to diamond growth conditions before seeding; this leaves a thin carbon film on the substrate surface. Following this step samples were seeded with commercial nanodiamond suspensions, exposed again to growth conditions and characterised by SEM. Results showed that seeding suspensions played a role depending on particle size and nature of dispersing medium. Seeding density was larger and more uniform in samples pre-exposed to diamond growth conditions. The carbon film deposited during the pre-treatment improves deagglomeration of nanodiamond seeds via a more effective interaction between substrate surface and seeds. This procedure represents a viable way to grow thin conformal diamond coatings by HFCVD.
{"title":"HFCVD nanostructured diamond films deposited by a combination of seeding suspensions and novel nucleation process","authors":"D. Mukherjee, R. Polini, V. Valentini, S. Rotter, J. Mendes","doi":"10.1504/IJSURFSE.2017.085622","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.085622","url":null,"abstract":"The ultrasonic seeding of a substrate with diamond suspensions enriches the surface with nanometre-sized seeds that coalesce and form a closed conformal film during early stages of diamond growth. To get insight on seeds early growth and evaluate the seeding efficiency of different suspensions, silicon samples were exposed to diamond growth conditions before seeding; this leaves a thin carbon film on the substrate surface. Following this step samples were seeded with commercial nanodiamond suspensions, exposed again to growth conditions and characterised by SEM. Results showed that seeding suspensions played a role depending on particle size and nature of dispersing medium. Seeding density was larger and more uniform in samples pre-exposed to diamond growth conditions. The carbon film deposited during the pre-treatment improves deagglomeration of nanodiamond seeds via a more effective interaction between substrate surface and seeds. This procedure represents a viable way to grow thin conformal diamond coatings by HFCVD.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"11 1","pages":"225-240"},"PeriodicalIF":0.8,"publicationDate":"2017-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJSURFSE.2017.085622","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46602548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-26DOI: 10.1504/IJSURFSE.2017.10005749
A. Mahamani
In-situ synthesis is a process of developing high-performance material with the minimal reinforcement ratio. In this work dry sliding friction and wear behaviour of AA6061 - TiB2/ZrB2 in-situ metal matrix composites are investigated by using pin on disc wear testing machine against high chromium steel counter face at room temperature. The influences of normal load, sliding speed and reinforcement ratio on wear properties are studied. Wear transition maps are generated to establish the scheme of the wear rate and wears transition for a particular sliding condition. Worn-out surface analysis also carried out to study the debris layer formation on the sliding surfaces. Experimental investigation shows that normal load, sliding velocity and reinforcement ratio offer significant influence on wear performance.
{"title":"Dry sliding wear and friction characteristics of AA6061 - TiB2/ZrB2 in-situ metal matrix composites at room temperature","authors":"A. Mahamani","doi":"10.1504/IJSURFSE.2017.10005749","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.10005749","url":null,"abstract":"In-situ synthesis is a process of developing high-performance material with the minimal reinforcement ratio. In this work dry sliding friction and wear behaviour of AA6061 - TiB2/ZrB2 in-situ metal matrix composites are investigated by using pin on disc wear testing machine against high chromium steel counter face at room temperature. The influences of normal load, sliding speed and reinforcement ratio on wear properties are studied. Wear transition maps are generated to establish the scheme of the wear rate and wears transition for a particular sliding condition. Worn-out surface analysis also carried out to study the debris layer formation on the sliding surfaces. Experimental investigation shows that normal load, sliding velocity and reinforcement ratio offer significant influence on wear performance.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"11 1","pages":"148"},"PeriodicalIF":0.8,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48824655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-26DOI: 10.1504/IJSURFSE.2017.084669
M. Muchammad, M. Tauviqirrahman, A. W. Pratomo, J. Jamari, D. Schipper
Boundary slip in bearings is becoming more and more popular to improve the hydrodynamic performance (pressure and shear stress). However, most of previously published works regarding textured bearings neglected the cavitation effect and make their results questionable. The main aim of this paper is to investigate the hydrodynamic performance of slip pocketed bearings considering cavitation by a theoretical approach. Cavitation was of particular interest with respect to pressure generation and shear stress. One main result presented here was that slip over the whole surface could retard the presence of cavitation and therefore the generated pressure and shear stress could be optimal. The work presented here leads to a design reference guideline that could be used by the designer/engineer to design slip pocketed bearings for improving the hydrodynamic performance.
{"title":"Theoretical investigation of boundary slip on the hydrodynamic lubrication performance in pocketed bearings including cavitation","authors":"M. Muchammad, M. Tauviqirrahman, A. W. Pratomo, J. Jamari, D. Schipper","doi":"10.1504/IJSURFSE.2017.084669","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.084669","url":null,"abstract":"Boundary slip in bearings is becoming more and more popular to improve the hydrodynamic performance (pressure and shear stress). However, most of previously published works regarding textured bearings neglected the cavitation effect and make their results questionable. The main aim of this paper is to investigate the hydrodynamic performance of slip pocketed bearings considering cavitation by a theoretical approach. Cavitation was of particular interest with respect to pressure generation and shear stress. One main result presented here was that slip over the whole surface could retard the presence of cavitation and therefore the generated pressure and shear stress could be optimal. The work presented here leads to a design reference guideline that could be used by the designer/engineer to design slip pocketed bearings for improving the hydrodynamic performance.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"11 1","pages":"100-117"},"PeriodicalIF":0.8,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJSURFSE.2017.084669","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44011303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-26DOI: 10.1504/IJSURFSE.2017.10005750
E. Poursaeidi, A. M. Niaei, M. Arablu, A. Salarvand
A first-stage blade of an axial compressor was fractured after 30,895 hours of operation due to existence of pits and micro-cracks, which were created by erosion and poor corrosion mechanisms. In this research, erosion of the blade material is tested under simulated conditions of the real blade. Abrasive particles impingement angles of 90° and 54° are tested to predict the erosion characteristics on the blade. The predicted blade erosion is validated using the data taken from on-site blades. The eroded specimens are examined by scanning electron microscopy, and wavelength- and energy-dispersive X-ray spectroscopy. According to the observations, although the 90° impingements make more pits than 54° impingements, the latter creates longer and more critical pits than the former. Furthermore, the results show that the erosion in the on-site blades is strong enough to assist the formation of severe pits on them which eliminates the crack initiation time.
{"title":"Experimental investigation on erosion performance and wear factors of custom 450 steel as the first row blade material of an axial compressor","authors":"E. Poursaeidi, A. M. Niaei, M. Arablu, A. Salarvand","doi":"10.1504/IJSURFSE.2017.10005750","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.10005750","url":null,"abstract":"A first-stage blade of an axial compressor was fractured after 30,895 hours of operation due to existence of pits and micro-cracks, which were created by erosion and poor corrosion mechanisms. In this research, erosion of the blade material is tested under simulated conditions of the real blade. Abrasive particles impingement angles of 90° and 54° are tested to predict the erosion characteristics on the blade. The predicted blade erosion is validated using the data taken from on-site blades. The eroded specimens are examined by scanning electron microscopy, and wavelength- and energy-dispersive X-ray spectroscopy. According to the observations, although the 90° impingements make more pits than 54° impingements, the latter creates longer and more critical pits than the former. Furthermore, the results show that the erosion in the on-site blades is strong enough to assist the formation of severe pits on them which eliminates the crack initiation time.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"11 1","pages":"85"},"PeriodicalIF":0.8,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45163480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-26DOI: 10.1504/IJSURFSE.2017.10005740
N. Sivanandham, A. Rajadurai, S. M. Shariff, J. Senthilselvan, A. Mahalingam
The efficacy of laser surface modification of EN353 low carbon low alloy steel is studied and discussed. The high power diode laser (HPDL) treated layers were characterised by means of high resolution scanning electron microscopy (HRSEM), and X-ray diffractometer (XRD). The mechanical properties like hardness, wear and corrosion resistance were studied. The hardness profile of the laser modified cross-sectional layer was determined by using Vickers hardness tester. It was found that the microhardness improved to as high as 493 HV as compared to 215 HV of the substrate material. The laser surface melting by the HPDL resulted of martensite and bainite microstructure in low carbon low alloy steel. XRD phase analysis indicated the formation of martensite, Fe-Mn-C, Fe-Cr-C and M23C6 carbide phases at near surface regions of laser treated samples. The wear resistance of the laser surface melted EN353 steel was also found to be increased. Potentiodynamic electrochemical corrosion method revealed an improved corrosion resistance in the laser treated layers.
{"title":"Microstructure, mechanical properties and corrosion resistance of laser surface melted EN353 low carbon low alloy steel","authors":"N. Sivanandham, A. Rajadurai, S. M. Shariff, J. Senthilselvan, A. Mahalingam","doi":"10.1504/IJSURFSE.2017.10005740","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.10005740","url":null,"abstract":"The efficacy of laser surface modification of EN353 low carbon low alloy steel is studied and discussed. The high power diode laser (HPDL) treated layers were characterised by means of high resolution scanning electron microscopy (HRSEM), and X-ray diffractometer (XRD). The mechanical properties like hardness, wear and corrosion resistance were studied. The hardness profile of the laser modified cross-sectional layer was determined by using Vickers hardness tester. It was found that the microhardness improved to as high as 493 HV as compared to 215 HV of the substrate material. The laser surface melting by the HPDL resulted of martensite and bainite microstructure in low carbon low alloy steel. XRD phase analysis indicated the formation of martensite, Fe-Mn-C, Fe-Cr-C and M23C6 carbide phases at near surface regions of laser treated samples. The wear resistance of the laser surface melted EN353 steel was also found to be increased. Potentiodynamic electrochemical corrosion method revealed an improved corrosion resistance in the laser treated layers.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"11 1","pages":"118"},"PeriodicalIF":0.8,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45253124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-26DOI: 10.1504/IJSURFSE.2017.084659
Michael Joyce, P. D. Fleming, A. Pekarovicova
In this work, various methods to enable tailoring of polydimethylsiloxane film surfaces are implemented and compared to determine their influence on surface energy and roughness. Films were prepared containing various levels of hydrophilic silica filler. Ultraviolet-ozone, and Piranha solution treatments were also implemented and characterised. Lastly, the combination of both silica filler and treatments were utilised and characterised to understand interactive effects. Influence of filler loading, and surface treatment on roughness, and surface energy of films was determined. Regardless of surface treatment, addition of silica significantly influences total surface energy. Addition of silica influenced total surface energy of the films by itself, and in combination with the Piranha and UV-ozone treatments. The lowest surface energy was that of the control Polydimethylsiloxane film 21.5 N/m. The overall highest surface energy achieved was that of the 10% filled 30-minute Piranha solution treated sample, having a surface energy of 44.1 N/m.
{"title":"The characterisation of surface treated silica-filled and non-filled polydimethylsiloxane films","authors":"Michael Joyce, P. D. Fleming, A. Pekarovicova","doi":"10.1504/IJSURFSE.2017.084659","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.084659","url":null,"abstract":"In this work, various methods to enable tailoring of polydimethylsiloxane film surfaces are implemented and compared to determine their influence on surface energy and roughness. Films were prepared containing various levels of hydrophilic silica filler. Ultraviolet-ozone, and Piranha solution treatments were also implemented and characterised. Lastly, the combination of both silica filler and treatments were utilised and characterised to understand interactive effects. Influence of filler loading, and surface treatment on roughness, and surface energy of films was determined. Regardless of surface treatment, addition of silica significantly influences total surface energy. Addition of silica influenced total surface energy of the films by itself, and in combination with the Piranha and UV-ozone treatments. The lowest surface energy was that of the control Polydimethylsiloxane film 21.5 N/m. The overall highest surface energy achieved was that of the 10% filled 30-minute Piranha solution treated sample, having a surface energy of 44.1 N/m.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"125 3","pages":"133-147"},"PeriodicalIF":0.8,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJSURFSE.2017.084659","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41287558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-26DOI: 10.1504/IJSURFSE.2017.10005752
A. Anand, V. Arumugam, R. Kannan
The wetting behaviour associated with the surface micro asperities is investigated on the groove and pillar textured SS304 solid surface which is widely used in the flight vehicles where the stresses are induced by uniaxial compressive loads for both positive and negative curvature. By varying the applied load on the groove-textured surfaces in the direction perpendicular to grooves, the positive curvature shows a decrease in static contact angle initially then increases for further increase in deflection; however, the negative curvature induced by the same applied load shows an opposite trend. At the same time, in the pillar-textured surface, the static contact angle decreases with increase in applied load for the positive curvature and the same wetting parameter shows an opposite trend for the negative curvature. This phenomenon is mainly attributed to the pinning behaviour of the three phase contact line of the liquid drop on these two surfaces.
{"title":"Static Wetting Characteristics of Micro-textured Stainless Steel Surfaces under Uniaxial Loading Condition","authors":"A. Anand, V. Arumugam, R. Kannan","doi":"10.1504/IJSURFSE.2017.10005752","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2017.10005752","url":null,"abstract":"The wetting behaviour associated with the surface micro asperities is investigated on the groove and pillar textured SS304 solid surface which is widely used in the flight vehicles where the stresses are induced by uniaxial compressive loads for both positive and negative curvature. By varying the applied load on the groove-textured surfaces in the direction perpendicular to grooves, the positive curvature shows a decrease in static contact angle initially then increases for further increase in deflection; however, the negative curvature induced by the same applied load shows an opposite trend. At the same time, in the pillar-textured surface, the static contact angle decreases with increase in applied load for the positive curvature and the same wetting parameter shows an opposite trend for the negative curvature. This phenomenon is mainly attributed to the pinning behaviour of the three phase contact line of the liquid drop on these two surfaces.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":"11 1","pages":"174"},"PeriodicalIF":0.8,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46306890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：