Pub Date : 2019-09-17DOI: 10.1504/ijsurfse.2019.10024006
Manvandra Kumar Singh, R. Gautam
In the present investigation, dry sliding friction and wear behaviour of developed copper-based hybrid composites were studied. Tungsten carbide (WC), zirconia (ZrO2), alumina (Al2O3) of grade A6 and chromium (Cr) hybrid reinforcements were utilised to develop various copper-based hybrid composites using liquid stir-casting technique. The developed hybrid composites were characterised by X-rays diffraction (XRD), high-resolution scanning electron microscope (HR-SEM), energy-dispersive analysis of X-rays (EDAX), relative density and Vickers hardness. Developed hybrid composites show improved Vickers hardness compared to its copper matrix while relative density was found lower. Dry sliding friction and wear behaviour of the developed hybrid composites were studied using pin-on-disc tribometer at variable normal load, constant sliding speed and sliding distance. Hybrid composites exhibited low wear compared to its copper matrix, particularly (WC + Al2O3 + Cr) hybrid reinforced composites revealed better wear resistance among all. Fluctuating nature of the coefficient of friction was observed in all the materials. However, developed hybrid composites revealed higher coefficient of friction compared with its matrix. The worn surfaces were analysed using scanning electron microscopy (SEM), EDAX and optical profilometer to discuss the friction and anti-wear mechanism involved in developed materials.
{"title":"Dry sliding friction and wear behaviour of developed copper metal matrix hybrid composites","authors":"Manvandra Kumar Singh, R. Gautam","doi":"10.1504/ijsurfse.2019.10024006","DOIUrl":"https://doi.org/10.1504/ijsurfse.2019.10024006","url":null,"abstract":"In the present investigation, dry sliding friction and wear behaviour of developed copper-based hybrid composites were studied. Tungsten carbide (WC), zirconia (ZrO2), alumina (Al2O3) of grade A6 and chromium (Cr) hybrid reinforcements were utilised to develop various copper-based hybrid composites using liquid stir-casting technique. The developed hybrid composites were characterised by X-rays diffraction (XRD), high-resolution scanning electron microscope (HR-SEM), energy-dispersive analysis of X-rays (EDAX), relative density and Vickers hardness. Developed hybrid composites show improved Vickers hardness compared to its copper matrix while relative density was found lower. Dry sliding friction and wear behaviour of the developed hybrid composites were studied using pin-on-disc tribometer at variable normal load, constant sliding speed and sliding distance. Hybrid composites exhibited low wear compared to its copper matrix, particularly (WC + Al2O3 + Cr) hybrid reinforced composites revealed better wear resistance among all. Fluctuating nature of the coefficient of friction was observed in all the materials. However, developed hybrid composites revealed higher coefficient of friction compared with its matrix. The worn surfaces were analysed using scanning electron microscopy (SEM), EDAX and optical profilometer to discuss the friction and anti-wear mechanism involved in developed materials.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45807391","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 : 2019-09-17DOI: 10.1504/ijsurfse.2019.10024014
W. Kapłonek, K. Nadolny, M. Ungureanu, D. Pimenov, B. Zieliński
In the paper, initial studies focused on observations and analysis of the effects of the impregnation process of the grinding wheel active surface (GWAS) 1-35 × 20 × 10 99C46K8V made of green silicon carbide (SiCg) are presented. One of the allotropic varieties of carbon (graphite) and a synthetic organosilicon polymer (silicone) was introduced into the structure of the GWAS. For an assessment of the effects of impregnation, a JEOL JSM-550LV scanning electron microscope (SEM) was used. The data acquired by this instrument are presented in the form of a set of SEM micrographs subjected to visual and computer image analysis using Image Pro®-Premier software. This software allowed one to calculate the size of the area containing the impregnate in relation to the area without an impregnate, and to determine other useful geometrical parameters. The obtained results provided information about the effects of the impregnation process, its efficiency and influence on the characteristics of the GWAS.
{"title":"SEM-based observations and analysis of the green silicon carbide grinding wheel active surfaces after the graphite and silicone impregnation process","authors":"W. Kapłonek, K. Nadolny, M. Ungureanu, D. Pimenov, B. Zieliński","doi":"10.1504/ijsurfse.2019.10024014","DOIUrl":"https://doi.org/10.1504/ijsurfse.2019.10024014","url":null,"abstract":"In the paper, initial studies focused on observations and analysis of the effects of the impregnation process of the grinding wheel active surface (GWAS) 1-35 × 20 × 10 99C46K8V made of green silicon carbide (SiCg) are presented. One of the allotropic varieties of carbon (graphite) and a synthetic organosilicon polymer (silicone) was introduced into the structure of the GWAS. For an assessment of the effects of impregnation, a JEOL JSM-550LV scanning electron microscope (SEM) was used. The data acquired by this instrument are presented in the form of a set of SEM micrographs subjected to visual and computer image analysis using Image Pro®-Premier software. This software allowed one to calculate the size of the area containing the impregnate in relation to the area without an impregnate, and to determine other useful geometrical parameters. The obtained results provided information about the effects of the impregnation process, its efficiency and influence on the characteristics of the GWAS.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45486599","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 : 2019-09-17DOI: 10.1504/ijsurfse.2019.10024005
K. Nadolny, W. Kapłonek, M. Niemczewska-Wójcik, M. Ungureanu
In the paper, analysis of the surface condition of 1-35 × 10 × 10-SG/ F46G10VTO grinding wheels with microcrystalline sintered alumina abrasive grains and a glass-crystalline bond after the impregnation process using a synthetic organosilicon polymer (silicone) has been presented. The main goal was to compare the values of selected surface topography parameters obtained from the active surfaces of an impregnated set of grinding wheels with those same parameters obtained from a non-impregnated reference wheel. The analysis proved that an elaborated method of introducing the impregnating substance is effective and allowing to uniformly its distribution throughout the body of the grinding wheel. However, the introduction of impregnating substance caused a reduction (average from 13% to 50%) in the values of the selected 3D parameters of grinding wheel active surface (GWAS) roughness. An analysis described in this work is the basis of an objective evaluation of the experimental results of the grinding process conducted with use of that kind of wheels.
{"title":"Microscopic analysis of the Sol-Gel alumina grinding wheel after the introduction of a synthetic organosilicon polymer-based impregnate dedicated for near dry grinding processes","authors":"K. Nadolny, W. Kapłonek, M. Niemczewska-Wójcik, M. Ungureanu","doi":"10.1504/ijsurfse.2019.10024005","DOIUrl":"https://doi.org/10.1504/ijsurfse.2019.10024005","url":null,"abstract":"In the paper, analysis of the surface condition of 1-35 × 10 × 10-SG/ F46G10VTO grinding wheels with microcrystalline sintered alumina abrasive grains and a glass-crystalline bond after the impregnation process using a synthetic organosilicon polymer (silicone) has been presented. The main goal was to compare the values of selected surface topography parameters obtained from the active surfaces of an impregnated set of grinding wheels with those same parameters obtained from a non-impregnated reference wheel. The analysis proved that an elaborated method of introducing the impregnating substance is effective and allowing to uniformly its distribution throughout the body of the grinding wheel. However, the introduction of impregnating substance caused a reduction (average from 13% to 50%) in the values of the selected 3D parameters of grinding wheel active surface (GWAS) roughness. An analysis described in this work is the basis of an objective evaluation of the experimental results of the grinding process conducted with use of that kind of wheels.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48818470","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 : 2019-09-17DOI: 10.1504/ijsurfse.2019.10024018
C. Moseke, Yunis Alnazal Alramadan, E. Vorndran, P. Elter
A wet chemistry reaction route was utilised to fabricate hydroxyapatite (HA) coatings with the incorporation of different amounts of zinc by electrophoretic deposition on titanium. HA powders and coatings were characterised by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray analysis. The presence of Zn had only a small impact on the crystallinity and practically no effect on the crystallite morphology of the powders and coatings. High additions of Zn apparently led to a change of the migration direction of the HA particles in the coating electrolyte and also resulted in increased crack formation during the drying process of the deposited coatings. Zn was incorporated in the HA coatings by ionic substitution and by incorporation of a low-crystalline ZnO phase, which may be advantageous for the application as a long-term reservoir for Zn as an osteoclast-inhibiting agent on biomaterials for implantation in critical bone situations.
{"title":"Electrophoretic deposition of zinc-doped hydroxyapatite coatings on titanium: deposition kinetics and coating morphology","authors":"C. Moseke, Yunis Alnazal Alramadan, E. Vorndran, P. Elter","doi":"10.1504/ijsurfse.2019.10024018","DOIUrl":"https://doi.org/10.1504/ijsurfse.2019.10024018","url":null,"abstract":"A wet chemistry reaction route was utilised to fabricate hydroxyapatite (HA) coatings with the incorporation of different amounts of zinc by electrophoretic deposition on titanium. HA powders and coatings were characterised by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray analysis. The presence of Zn had only a small impact on the crystallinity and practically no effect on the crystallite morphology of the powders and coatings. High additions of Zn apparently led to a change of the migration direction of the HA particles in the coating electrolyte and also resulted in increased crack formation during the drying process of the deposited coatings. Zn was incorporated in the HA coatings by ionic substitution and by incorporation of a low-crystalline ZnO phase, which may be advantageous for the application as a long-term reservoir for Zn as an osteoclast-inhibiting agent on biomaterials for implantation in critical bone situations.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45685685","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 : 2019-09-17DOI: 10.1504/ijsurfse.2019.10024001
S. Özden, M. M. Koç
Substrate surface plays an important role to achieve high performance infrared devices and high-quality film layers. GaAs (211)B wafers were intensively used in infrared detector applications. Despite 'epiready' wafers can easily be found on the market, most of them have defects and contaminations due to their fabrication processes. The defects and contaminations on wafers may have deleterious effects on thin film growth and detector applications. To overcome such problems, various chemical treatments should be implemented prior to thin film growth. In this study, to understand the effect of wet chemical cleaning process on epiready (211)B GaAs wafers, piranha solution-based wet chemical etching was performed. After these treatments, the surfaces of GaAs wafers were investigated by atomic force microscopy and scanning electron microscopy. Energy dispersive X-ray spectroscopy was used to assess the chemical composition of the surface. The vibrational modes and two-dimensional maps were observed by a Raman spectroscopy.
{"title":"Wet-chemical etching of GaAs(211)B wafers for controlling the surface properties","authors":"S. Özden, M. M. Koç","doi":"10.1504/ijsurfse.2019.10024001","DOIUrl":"https://doi.org/10.1504/ijsurfse.2019.10024001","url":null,"abstract":"Substrate surface plays an important role to achieve high performance infrared devices and high-quality film layers. GaAs (211)B wafers were intensively used in infrared detector applications. Despite 'epiready' wafers can easily be found on the market, most of them have defects and contaminations due to their fabrication processes. The defects and contaminations on wafers may have deleterious effects on thin film growth and detector applications. To overcome such problems, various chemical treatments should be implemented prior to thin film growth. In this study, to understand the effect of wet chemical cleaning process on epiready (211)B GaAs wafers, piranha solution-based wet chemical etching was performed. After these treatments, the surfaces of GaAs wafers were investigated by atomic force microscopy and scanning electron microscopy. Energy dispersive X-ray spectroscopy was used to assess the chemical composition of the surface. The vibrational modes and two-dimensional maps were observed by a Raman spectroscopy.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42419013","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 : 2019-09-17DOI: 10.1504/ijsurfse.2019.10024024
B. Kumar, P. D. Babu, P. Marimuthu, M. Duraiselvam
This work aims to study the effect of laser surface microtexture on the sliding behaviour of grey cast iron, which is used as a liner material in internal combustion engines. The sliding wear analysis was conducted at different sliding speeds (200 rpm, 400 rpm, and 600 rpm) and a normal load of 10 N. Laser machining system was used to create micro-dimples with texture densities of 13.45% and 6.37%. The dimple sizes were observed using a scanning electron microscope, and the surface roughness was measured using the white light interferometer. The sliding wear results show that the textured samples with 13.45% densities in higher viscosity 146 mPas oil show better wear resistance with 0.1828 mm3'm wear rate and reduced friction coefficient of 0.1973. The wear morphology of the textured samples confirms the abrasive wear mechanism with minimum material removal compared with the non-textured specimen for the given applied load and sliding speed.
{"title":"Effect of laser surface texturing on tribological behaviour of grey cast iron","authors":"B. Kumar, P. D. Babu, P. Marimuthu, M. Duraiselvam","doi":"10.1504/ijsurfse.2019.10024024","DOIUrl":"https://doi.org/10.1504/ijsurfse.2019.10024024","url":null,"abstract":"This work aims to study the effect of laser surface microtexture on the sliding behaviour of grey cast iron, which is used as a liner material in internal combustion engines. The sliding wear analysis was conducted at different sliding speeds (200 rpm, 400 rpm, and 600 rpm) and a normal load of 10 N. Laser machining system was used to create micro-dimples with texture densities of 13.45% and 6.37%. The dimple sizes were observed using a scanning electron microscope, and the surface roughness was measured using the white light interferometer. The sliding wear results show that the textured samples with 13.45% densities in higher viscosity 146 mPas oil show better wear resistance with 0.1828 mm3'm wear rate and reduced friction coefficient of 0.1973. The wear morphology of the textured samples confirms the abrasive wear mechanism with minimum material removal compared with the non-textured specimen for the given applied load and sliding speed.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47607060","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 : 2019-09-17DOI: 10.1504/ijsurfse.2019.10024012
Tamonash Jana, A. Mitra, P. Sahoo
In the present work, a normally loaded contact between a radially functionally graded hemisphere and a rigid flat is analysed in perfect slip condition for different values of gradient/inhomogeneity parameter. The analysis was performed with an axisymmetric model in commercial finite element software ANSYS 18.2. The Young's modulus, yield strength and tangent modulus (for bilinear isotropic hardening) are varied according to an exponential function. The effect of the inhomogeneity parameter on different contact behaviours, e.g., contact area, contact pressure, contact stresses, etc., of the hemisphere are obtained. Stress and deformation behaviour of the contact interface as well as of the entire hemisphere has been analysed. It is observed that for negative inhomogeneity parameter, while being deformed by the rigid flat, the summit of the hemisphere loses contact with flat and sinks in to have a concave shape at the top of the hemisphere. This phenomenon has not been reported in established literature yet.
{"title":"Finite element-based contact analysis of a radially functionally graded hemisphere and a rigid flat","authors":"Tamonash Jana, A. Mitra, P. Sahoo","doi":"10.1504/ijsurfse.2019.10024012","DOIUrl":"https://doi.org/10.1504/ijsurfse.2019.10024012","url":null,"abstract":"In the present work, a normally loaded contact between a radially functionally graded hemisphere and a rigid flat is analysed in perfect slip condition for different values of gradient/inhomogeneity parameter. The analysis was performed with an axisymmetric model in commercial finite element software ANSYS 18.2. The Young's modulus, yield strength and tangent modulus (for bilinear isotropic hardening) are varied according to an exponential function. The effect of the inhomogeneity parameter on different contact behaviours, e.g., contact area, contact pressure, contact stresses, etc., of the hemisphere are obtained. Stress and deformation behaviour of the contact interface as well as of the entire hemisphere has been analysed. It is observed that for negative inhomogeneity parameter, while being deformed by the rigid flat, the summit of the hemisphere loses contact with flat and sinks in to have a concave shape at the top of the hemisphere. This phenomenon has not been reported in established literature yet.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44916822","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 : 2019-02-25DOI: 10.1504/IJSURFSE.2019.10019183
Ł. Szparaga, K. Mydłowska, A. Gilewicz, J. Ratajski
The objects of investigations were Cr/CrN multi-module coatings deposited using a cathodic arc evaporation method (CAPVD) on HS6-5-2C steel used as a substrates. Analysed coatings possesses seven Cr/CrN modules of fixed thickness each, with various thicknesses of Cr and CrN layers. Aiming for the evaluation of mechanical properties of tested multi-module Cr/CrN coatings, its hardness and Young's modulus were measured, on the basis of which were determined values of H/E and H3/E2 ratios. Coatings wear and friction coefficients were measured in so called ball-on-disc test. The adhesion of the coatings was evaluated using scratch tester and was shown that main mechanism of adhesive damage of all tested coatings at higher loads are buckle spallations. All tested coatings are also characterised by good adhesion to the substrate, which is evidenced by the fact that cracked coating remains inside the scratch track. Basing on the analysis of obtained experimental results it was confirmed and explicitly shown that the thickness of the individual layers of Cr and CrN in the multi-module coating significantly affects its critical loads (in scratch test), fracture toughness and wear rate.
{"title":"Mechanical and anti-wear properties of multi-module Cr/CrN coatings","authors":"Ł. Szparaga, K. Mydłowska, A. Gilewicz, J. Ratajski","doi":"10.1504/IJSURFSE.2019.10019183","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2019.10019183","url":null,"abstract":"The objects of investigations were Cr/CrN multi-module coatings deposited using a cathodic arc evaporation method (CAPVD) on HS6-5-2C steel used as a substrates. Analysed coatings possesses seven Cr/CrN modules of fixed thickness each, with various thicknesses of Cr and CrN layers. Aiming for the evaluation of mechanical properties of tested multi-module Cr/CrN coatings, its hardness and Young's modulus were measured, on the basis of which were determined values of H/E and H3/E2 ratios. Coatings wear and friction coefficients were measured in so called ball-on-disc test. The adhesion of the coatings was evaluated using scratch tester and was shown that main mechanism of adhesive damage of all tested coatings at higher loads are buckle spallations. All tested coatings are also characterised by good adhesion to the substrate, which is evidenced by the fact that cracked coating remains inside the scratch track. Basing on the analysis of obtained experimental results it was confirmed and explicitly shown that the thickness of the individual layers of Cr and CrN in the multi-module coating significantly affects its critical loads (in scratch test), fracture toughness and wear rate.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41702260","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 : 2019-02-25DOI: 10.1504/IJSURFSE.2019.10019179
M. A. Khan, S. Manikandan, G. Ebenezer, M. Uthayakumar, S. Kumaran
The development on composite materials has a tremendous role in the place of metals and alloys for different engineering applications. On the other hand, the material selected for specific applications are prone to fail in bulk with surface defect and shear based on working conditions. Hence, the challenges convince the researchers to modifying the materials with different reinforcement. In this paper, glass fibre composite material was developed with and without fillers to investigate on solid particle erosion test rig. From the experiments, the surface wear and parameter influencing air jet erosion are studied in detail. The parameters involve are jet pressure, volume of erodent and exposed time at constant angle of impingement. Based on mass change erosive wear rate are empirically calculated. The surface topography of the sample are observed with electron microscopic analysis for superficial studies. Influence of process parameter is evaluated using 2k factorial design. It is confirmed that erodent behaviour and composite with filler material are dominating the erosive wear rate. The sample with polyester resin has an affinity to hold the abrasive particle as inclusion during striking of solid particle. Therefore the proposed model with natural filler in fibre reinforced surface has resistance toward erosion.
{"title":"Solid particle erosion studies on fibre composite with egg shell as filler materials","authors":"M. A. Khan, S. Manikandan, G. Ebenezer, M. Uthayakumar, S. Kumaran","doi":"10.1504/IJSURFSE.2019.10019179","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2019.10019179","url":null,"abstract":"The development on composite materials has a tremendous role in the place of metals and alloys for different engineering applications. On the other hand, the material selected for specific applications are prone to fail in bulk with surface defect and shear based on working conditions. Hence, the challenges convince the researchers to modifying the materials with different reinforcement. In this paper, glass fibre composite material was developed with and without fillers to investigate on solid particle erosion test rig. From the experiments, the surface wear and parameter influencing air jet erosion are studied in detail. The parameters involve are jet pressure, volume of erodent and exposed time at constant angle of impingement. Based on mass change erosive wear rate are empirically calculated. The surface topography of the sample are observed with electron microscopic analysis for superficial studies. Influence of process parameter is evaluated using 2k factorial design. It is confirmed that erodent behaviour and composite with filler material are dominating the erosive wear rate. The sample with polyester resin has an affinity to hold the abrasive particle as inclusion during striking of solid particle. Therefore the proposed model with natural filler in fibre reinforced surface has resistance toward erosion.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49321501","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 : 2019-02-25DOI: 10.1504/IJSURFSE.2019.10019184
A. Dmitruk, P. Mayer, J. Pach
The paper aims at presenting the results of pull-off strength and abrasion resistance tests for anti-corrosive coatings on steel substrates. It contains the measured data on the thickness of manufactured coatings in the function of the applied amount of abrasive material. Three polymeric coatings were subjected for testing: chlorinated rubber, oil-phthalic and alkyd. The analogous studies were repeated for composite coatings with alumina α-Al2O3 filler and subsequently also for the aged (72 h, -19°C) systems. For the pull-off tests, the damage analysis of samples after failure was performed. The highest pull-off strength's values for the produced coatings were obtained for the alkyd one. Concerning the abrasion resistance it can be stated that, the addition of a filler significantly improves the system's durability, while the aging process causes its deterioration.
{"title":"Pull-off strength and abrasion resistance of anti-corrosive polymer and composite coatings","authors":"A. Dmitruk, P. Mayer, J. Pach","doi":"10.1504/IJSURFSE.2019.10019184","DOIUrl":"https://doi.org/10.1504/IJSURFSE.2019.10019184","url":null,"abstract":"The paper aims at presenting the results of pull-off strength and abrasion resistance tests for anti-corrosive coatings on steel substrates. It contains the measured data on the thickness of manufactured coatings in the function of the applied amount of abrasive material. Three polymeric coatings were subjected for testing: chlorinated rubber, oil-phthalic and alkyd. The analogous studies were repeated for composite coatings with alumina α-Al2O3 filler and subsequently also for the aged (72 h, -19°C) systems. For the pull-off tests, the damage analysis of samples after failure was performed. The highest pull-off strength's values for the produced coatings were obtained for the alkyd one. Concerning the abrasion resistance it can be stated that, the addition of a filler significantly improves the system's durability, while the aging process causes its deterioration.","PeriodicalId":14460,"journal":{"name":"International Journal of Surface Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43479915","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}
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