Jean Claude Mallia, Anthea Agius Anastasi, S. Briffa
Photocatalytic coatings with self-cleaning properties are becoming increasingly more popular due to the increased awareness of the importance of cleaning and the associated high cost of cleaning supplies and services. This research investigated self-cleaning photocatalytic polydimethylsiloxane (PDMS)/titanium dioxide (TiO2) nanocomposite coatings and focused on selecting the optimal TiO2 phase and concentration. To date, the comparison of the different TiO2 phases as a nanocomposite coating has not been sufficiently considered. PDMS/TiO2 nanocomposite coatings with three nanomaterial (NM) samples (an anatase, rutile, and mixed phase) and three concentrations of TiO2 (0.6, 1 and 3 w/v%) were prepared, applied to glass slides by dip coating, and tested with respect to hydrophobicity, surface stability, antifogging, and photocatalytic properties. It was found that a stable hydrophobic coating with the optimal photocatalyitc performance was produced with 3 w/v% anatase TiO2.
{"title":"Developing Self-Cleaning Photocatalytic TiO2 Nanocomposite Coatings","authors":"Jean Claude Mallia, Anthea Agius Anastasi, S. Briffa","doi":"10.4018/ijseims.324757","DOIUrl":"https://doi.org/10.4018/ijseims.324757","url":null,"abstract":"Photocatalytic coatings with self-cleaning properties are becoming increasingly more popular due to the increased awareness of the importance of cleaning and the associated high cost of cleaning supplies and services. This research investigated self-cleaning photocatalytic polydimethylsiloxane (PDMS)/titanium dioxide (TiO2) nanocomposite coatings and focused on selecting the optimal TiO2 phase and concentration. To date, the comparison of the different TiO2 phases as a nanocomposite coating has not been sufficiently considered. PDMS/TiO2 nanocomposite coatings with three nanomaterial (NM) samples (an anatase, rutile, and mixed phase) and three concentrations of TiO2 (0.6, 1 and 3 w/v%) were prepared, applied to glass slides by dip coating, and tested with respect to hydrophobicity, surface stability, antifogging, and photocatalytic properties. It was found that a stable hydrophobic coating with the optimal photocatalyitc performance was produced with 3 w/v% anatase TiO2.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49323665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The various engineering components works under aggressive environments include the furnace parts, sliding parts in lathe machine and exhaust manifolds. Cast iron is used in these applications and important intention of this research work is to study on enhance the useful period of life.HVOF (High Velocity Oxy-fuel) sprayed Alloy-718coatings on cast iron were analysed. Coatings were characterised by field emission scanning electron microscopy (FE-SEM), Optical microscope (OM) and X-ray diffraction for its microstructural analysis. Energy dispersive spectroscopy (EDS) of the bare and coated samples was used to confirm the elemental details of the powder and the coating. Porosity measurements were taken and showed the 1.6% for Alloy-718 coating. Microhardness investigation was conducted for the Alloy-718 coating, and it was resulted as 560±20 HV. The bare material has hardness of 225±10, and there is a substantial difference of hardness found as 2.5 times higher. The fracture toughness was found to be 4.0 MPa.m1/2.
{"title":"Microsrtructural and mechanical characterization of HVOF sprayed Ni-based alloy coating","authors":"","doi":"10.4018/ijseims.298705","DOIUrl":"https://doi.org/10.4018/ijseims.298705","url":null,"abstract":"The various engineering components works under aggressive environments include the furnace parts, sliding parts in lathe machine and exhaust manifolds. Cast iron is used in these applications and important intention of this research work is to study on enhance the useful period of life.HVOF (High Velocity Oxy-fuel) sprayed Alloy-718coatings on cast iron were analysed. Coatings were characterised by field emission scanning electron microscopy (FE-SEM), Optical microscope (OM) and X-ray diffraction for its microstructural analysis. Energy dispersive spectroscopy (EDS) of the bare and coated samples was used to confirm the elemental details of the powder and the coating. Porosity measurements were taken and showed the 1.6% for Alloy-718 coating. Microhardness investigation was conducted for the Alloy-718 coating, and it was resulted as 560±20 HV. The bare material has hardness of 225±10, and there is a substantial difference of hardness found as 2.5 times higher. The fracture toughness was found to be 4.0 MPa.m1/2.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44018157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Naik, Smitirupa Pradhan, S. K. Acharya, P. Sahoo
Carbon black is the most promising filler material in polymer industries for fabrication of composite materials because of its unique properties and strength. In the present study, carbon black particles are developed from orange peel particulates (OPP) by pyrolysis approach at different carbonization temperatures (400oC, 600oC and 800oC). The raw and carbon black OPP materials are used as reinforcement to fabricate epoxy composites that are evaluated for mechanical and morphological properties following ASTM standard. Proximate analysis reveals that the amount of carbon content increases significantly (up to 74.42 % at 800°C) due to the carbonization. Tensile and flexural strength increase with increasing carbonization temperature and maximum value is observed in case of 800°C. SEM observations indicate good interfacial bonding between filler and matrix materials. Weight of the composite is reduced due to carbonization of raw material. TGA study of carbon black material reveals that the thermal stability increases with increase in carbonization temperature.
{"title":"Effect of Carbonization of Orange Peel Particulate-Reinforced Polymer Composites","authors":"P. Naik, Smitirupa Pradhan, S. K. Acharya, P. Sahoo","doi":"10.4018/ijseims.295097","DOIUrl":"https://doi.org/10.4018/ijseims.295097","url":null,"abstract":"Carbon black is the most promising filler material in polymer industries for fabrication of composite materials because of its unique properties and strength. In the present study, carbon black particles are developed from orange peel particulates (OPP) by pyrolysis approach at different carbonization temperatures (400oC, 600oC and 800oC). The raw and carbon black OPP materials are used as reinforcement to fabricate epoxy composites that are evaluated for mechanical and morphological properties following ASTM standard. Proximate analysis reveals that the amount of carbon content increases significantly (up to 74.42 % at 800°C) due to the carbonization. Tensile and flexural strength increase with increasing carbonization temperature and maximum value is observed in case of 800°C. SEM observations indicate good interfacial bonding between filler and matrix materials. Weight of the composite is reduced due to carbonization of raw material. TGA study of carbon black material reveals that the thermal stability increases with increase in carbonization temperature.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43847079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Composite materials assume a significant part in auto, aviation, marine and defense applications due to its unique properties. Aluminum alloys have certain advantages than other alloys. In this paper the composite material comprises of Aluminum Alloy LM6 and fly ash (150 – 175 μm) has been picked as lattice and supporting materials individually. Magnesium is added to lessen the surface pressure and evades the dismissal of the particles from the melts. Liquid state processing through Stir casting procedure was adopted for fabrication of mmc into necessary shape and size according to the ASTM principles by energetically mixing at consistent speed and time. The fly ash with various syntheses (2%, 4%, 6%) were added with LM6 combination. XRD, EDAX were used to examine the structural analysis of MMC and optical microscopy & SEM were used to investigate the microstructure on MMC. Wear test also carried out on MMC to ascertain the wear rate and cof of different MMCs. There is substantial improvement of mechanical properties like tensile strength, micro hardness & density of the composite.
{"title":"Investigation of mechanical & tribological properties of LM6 – fly ash metal matrix composites","authors":"","doi":"10.4018/ijseims.302235","DOIUrl":"https://doi.org/10.4018/ijseims.302235","url":null,"abstract":"Composite materials assume a significant part in auto, aviation, marine and defense applications due to its unique properties. Aluminum alloys have certain advantages than other alloys. In this paper the composite material comprises of Aluminum Alloy LM6 and fly ash (150 – 175 μm) has been picked as lattice and supporting materials individually. Magnesium is added to lessen the surface pressure and evades the dismissal of the particles from the melts. Liquid state processing through Stir casting procedure was adopted for fabrication of mmc into necessary shape and size according to the ASTM principles by energetically mixing at consistent speed and time. The fly ash with various syntheses (2%, 4%, 6%) were added with LM6 combination. XRD, EDAX were used to examine the structural analysis of MMC and optical microscopy & SEM were used to investigate the microstructure on MMC. Wear test also carried out on MMC to ascertain the wear rate and cof of different MMCs. There is substantial improvement of mechanical properties like tensile strength, micro hardness & density of the composite.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44376589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present paper considers the influence of yield strength on static and dynamic behaviour of cylindrical contact interface. The semi-cylinder is assumed to be in plane stress condition. A quasi-static analysis is executed by means of finite element (FE) software package ANSYS 18.2 to obtain several contact parameters. A key parameter, quantifying nonlinearity for the single-asperity cylindrical contact system is educed from the interference-contact force plot. The dynamic characteristics of the cylindrical contact interface is investigated by utilizing this parameter. In order to investigate the same, the contact interface is represented by a single degree of freedom spring-mass-damper system and the analysis is carried out for free-undamped as well as forced-damped vibration. It is found that, with higher Young’s modulus, the dynamic contact system becomes more nonlinear in nature. It is found that, with lower value of yield strength, the dynamic contact system becomes more nonlinear in nature. Moreover, the contact system is found to possess hardening type of nonlinearity.
{"title":"Effect of Yield Strength on the Static and Dynamic Behaviours of Cylindrical Contact","authors":"Tamonash Jana, A. Mitra, P. Sahoo","doi":"10.4018/ijseims.304806","DOIUrl":"https://doi.org/10.4018/ijseims.304806","url":null,"abstract":"The present paper considers the influence of yield strength on static and dynamic behaviour of cylindrical contact interface. The semi-cylinder is assumed to be in plane stress condition. A quasi-static analysis is executed by means of finite element (FE) software package ANSYS 18.2 to obtain several contact parameters. A key parameter, quantifying nonlinearity for the single-asperity cylindrical contact system is educed from the interference-contact force plot. The dynamic characteristics of the cylindrical contact interface is investigated by utilizing this parameter. In order to investigate the same, the contact interface is represented by a single degree of freedom spring-mass-damper system and the analysis is carried out for free-undamped as well as forced-damped vibration. It is found that, with higher Young’s modulus, the dynamic contact system becomes more nonlinear in nature. It is found that, with lower value of yield strength, the dynamic contact system becomes more nonlinear in nature. Moreover, the contact system is found to possess hardening type of nonlinearity.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41815889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Over the last decade, research on high-temperature tribological characteristics of Ti6Al4V alloy has been gathered significant interest due to their sustainable properties in high-temperature applications. Adhesion and abrasion have been identified as the most prevalent wear mechanism in the tribological system operated under high temperatures. Hence, the present study aimed to investigate the high-temperature wear behavior of titanium alloys under a vacuum environment and various operating conditions in order to explore the formation of no-oxide tribo layers and the governing wear mechanisms. The transition of materials from both the worn surfaces (Pin and Disc) has been demonstrated. The microstructural characteristics of the worn surfaces and cross-sections revealed the formation of no-oxide tribo-layers which significantly influenced the wear rates as well as governed wear mechanisms. Due to the formation of no-oxide layers, the coefficient of friction was observed to increase with increasing the temperature and load.
{"title":"Influence of temperature and applied load on adhesion and abrasion wear characteristics of Ti6Al4V alloy","authors":"","doi":"10.4018/ijseims.302234","DOIUrl":"https://doi.org/10.4018/ijseims.302234","url":null,"abstract":"Over the last decade, research on high-temperature tribological characteristics of Ti6Al4V alloy has been gathered significant interest due to their sustainable properties in high-temperature applications. Adhesion and abrasion have been identified as the most prevalent wear mechanism in the tribological system operated under high temperatures. Hence, the present study aimed to investigate the high-temperature wear behavior of titanium alloys under a vacuum environment and various operating conditions in order to explore the formation of no-oxide tribo layers and the governing wear mechanisms. The transition of materials from both the worn surfaces (Pin and Disc) has been demonstrated. The microstructural characteristics of the worn surfaces and cross-sections revealed the formation of no-oxide tribo-layers which significantly influenced the wear rates as well as governed wear mechanisms. Due to the formation of no-oxide layers, the coefficient of friction was observed to increase with increasing the temperature and load.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46689637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The emerge of Industrial 4.0 revolution and influences to production, information, and communication technologies have made manufacturers capable of reaching higher performance in the last decade. Making smart operations has been set as a top strategy of manufacturing societies, and machinery industry as an integral part of production has been highlighted develop. Aerospace, automotive, metals, glass, and plastics industries have been pioneers to improve, optimize, and develop automated polishing as a final operation of surface finishing process considering of KPIs: quality, time, cost, and safety. In this review, after mentioning the state of the art of last relevant papers, some clues for future research will be presented.
{"title":"On the Development of an Automated Adaptive Polishing System","authors":"A. Baraati, D. Afonso, Ricardo Guincho","doi":"10.4018/ijseims.313668","DOIUrl":"https://doi.org/10.4018/ijseims.313668","url":null,"abstract":"The emerge of Industrial 4.0 revolution and influences to production, information, and communication technologies have made manufacturers capable of reaching higher performance in the last decade. Making smart operations has been set as a top strategy of manufacturing societies, and machinery industry as an integral part of production has been highlighted develop. Aerospace, automotive, metals, glass, and plastics industries have been pioneers to improve, optimize, and develop automated polishing as a final operation of surface finishing process considering of KPIs: quality, time, cost, and safety. In this review, after mentioning the state of the art of last relevant papers, some clues for future research will be presented.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43972089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4018/ijseims.2022010104
B. Lal, Abhijit Dey, Mohamamd Farooq Wani
Due to the relatively low strength and poor wear resistance of unalloyed titanium and its good mechanical properties, corrosion resistance, and biocompatibility. Ti6Al4V has been extensively used in various type of application including aerospace, biomedical and offshore industries. The goal of this research is to enhance the surface properties of the high strength alloys are examine such as Ti6Al4V pin sliding against Al2O3disc, due to the various surfaces roughness parameters. The COF and the wear rate were found to be lower at higher applied load due to higher frictional heating leading to thermal oxidation and thereby formation of several mm thick tribo-layers on the worn surfaces. Characterization of the tribological sample was performed using a scanning electron microscope (SEM) equipped with energy dispersive X-ray analysis (EDAX) to ensure that the wear pattern and debris morphologies of the Ti6Al4V and alumina disks were distinct, suggesting a surface roughness value determined by 3D profilometer at various load and sliding speed of 0.01ms-1.
{"title":"Prediction of Surface Roughness During Dry Sliding Wear","authors":"B. Lal, Abhijit Dey, Mohamamd Farooq Wani","doi":"10.4018/ijseims.2022010104","DOIUrl":"https://doi.org/10.4018/ijseims.2022010104","url":null,"abstract":"Due to the relatively low strength and poor wear resistance of unalloyed titanium and its good mechanical properties, corrosion resistance, and biocompatibility. Ti6Al4V has been extensively used in various type of application including aerospace, biomedical and offshore industries. The goal of this research is to enhance the surface properties of the high strength alloys are examine such as Ti6Al4V pin sliding against Al2O3disc, due to the various surfaces roughness parameters. The COF and the wear rate were found to be lower at higher applied load due to higher frictional heating leading to thermal oxidation and thereby formation of several mm thick tribo-layers on the worn surfaces. Characterization of the tribological sample was performed using a scanning electron microscope (SEM) equipped with energy dispersive X-ray analysis (EDAX) to ensure that the wear pattern and debris morphologies of the Ti6Al4V and alumina disks were distinct, suggesting a surface roughness value determined by 3D profilometer at various load and sliding speed of 0.01ms-1.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45012502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4018/ijseims.2022010102
V. V. Meti, G. Raju, I. G. Siddhalingeshwar, V. Gaitonde
Aluminum alloy based metal matrix composites (AMCs) are widely accepted material in the aerospace, automotive, military, and defence applications due to lightweight and high strength. For tribological applications, high-performance wear-resistant materials like AMCs are the candidate materials. In this investigation, AA7075 based composites with different size TiB2 particles were fabricated using in-situ and ultrasound casting techniques (UST). The AMCs were tested using pin-on-disc tribo tester and the effects of different sized TiB2 particles on wear resistance of AA7075/TiB2 composites have been investigated. The wear resistance of AA7075/TiB2 composite fabricated using UST is found to significantly improve when compared to base alloy and also in-situ composite due to refinement in the particle size, reduced the agglomeration, and improved the distribution of TiB2 particles. The test results also revealed the existence of a mixture of mechanically mixed Al–Zn–Fe intermetallic alloy and oxides of these elements.
{"title":"Role of Reinforcement Particle Size and Its Dispersion on Room Temperature Dry Sliding Wear of AA7075/TiB2 Composites","authors":"V. V. Meti, G. Raju, I. G. Siddhalingeshwar, V. Gaitonde","doi":"10.4018/ijseims.2022010102","DOIUrl":"https://doi.org/10.4018/ijseims.2022010102","url":null,"abstract":"Aluminum alloy based metal matrix composites (AMCs) are widely accepted material in the aerospace, automotive, military, and defence applications due to lightweight and high strength. For tribological applications, high-performance wear-resistant materials like AMCs are the candidate materials. In this investigation, AA7075 based composites with different size TiB2 particles were fabricated using in-situ and ultrasound casting techniques (UST). The AMCs were tested using pin-on-disc tribo tester and the effects of different sized TiB2 particles on wear resistance of AA7075/TiB2 composites have been investigated. The wear resistance of AA7075/TiB2 composite fabricated using UST is found to significantly improve when compared to base alloy and also in-situ composite due to refinement in the particle size, reduced the agglomeration, and improved the distribution of TiB2 particles. The test results also revealed the existence of a mixture of mechanically mixed Al–Zn–Fe intermetallic alloy and oxides of these elements.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44571327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4018/ijseims.2022010101
Electroless nickel-boron binary coatings were obtained with various bath compositions to investigate the effect of bath parameters on tribological and mechanical behaviours of the coating. Characterisation of the coating for surface morphology and phase structure is done using Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD), respectively, whereas tribological behaviour of coatings is evaluated on a pin-on-disc tribo-tester. Elastic modulus and surface hardness of coatings have been obtained using nano-indentation technique, while the scratch behaviour of the coatings has been determined using micro-scratch test. Corrosion resistance of coatings is also determined. It is observed that surface roughness of the coatings increased with increase in sodium borohydride concentration but decreased slightly with increase in nickel chloride concentration. Friction and wear characteristics are found to increase with surface roughness which occurs due to increased boron content. Surface hardness and scratch hardness are also seen to vary with coating bath parameters.
{"title":"Effect of Coating Bath Parameters on Properties of Electroless Nickel-Boron Alloy Coatings","authors":"","doi":"10.4018/ijseims.2022010101","DOIUrl":"https://doi.org/10.4018/ijseims.2022010101","url":null,"abstract":"Electroless nickel-boron binary coatings were obtained with various bath compositions to investigate the effect of bath parameters on tribological and mechanical behaviours of the coating. Characterisation of the coating for surface morphology and phase structure is done using Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD), respectively, whereas tribological behaviour of coatings is evaluated on a pin-on-disc tribo-tester. Elastic modulus and surface hardness of coatings have been obtained using nano-indentation technique, while the scratch behaviour of the coatings has been determined using micro-scratch test. Corrosion resistance of coatings is also determined. It is observed that surface roughness of the coatings increased with increase in sodium borohydride concentration but decreased slightly with increase in nickel chloride concentration. Friction and wear characteristics are found to increase with surface roughness which occurs due to increased boron content. Surface hardness and scratch hardness are also seen to vary with coating bath parameters.","PeriodicalId":37123,"journal":{"name":"International Journal of Surface Engineering and Interdisciplinary Materials Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42805931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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