Pub Date : 2023-05-04DOI: 10.1080/02670844.2023.2243000
Y.G. Li, C. Chen, W.Y. Liu, L. Li
ABSTRACT Pulsed vapour fluxes with proper controlled time duration were proved to be an important controlling dimension for the deposition of a desired thin film. In this work, deep oscillation magnetron sputtering was employed to tailor the ionized pulsed flux for Nb and Cr thin film grown on AISI 304 stainless steel. Through tuning the micropulse oscillating voltage-off time from 10 to 40 μs, Nb and Cr thin films showed an obvious variation on microstructure owing to the deposition flux transited from continuous to chopped ones. The deposited Nb thin films showed Nb(110) preferred orientation experienced a nanocrystallization process with compressive residual stress showing a slightly decrease. While Cr thin films showed Cr(110) preferred orientation without an obvious nancrystallization trend with its compressive stress turning to be tensile. The tailoring of the microstructure and properties relied on interval time between the two interrupted ionized deposition flux.
{"title":"Growth of hard metal films by deep oscillation magnetron sputtering","authors":"Y.G. Li, C. Chen, W.Y. Liu, L. Li","doi":"10.1080/02670844.2023.2243000","DOIUrl":"https://doi.org/10.1080/02670844.2023.2243000","url":null,"abstract":"ABSTRACT Pulsed vapour fluxes with proper controlled time duration were proved to be an important controlling dimension for the deposition of a desired thin film. In this work, deep oscillation magnetron sputtering was employed to tailor the ionized pulsed flux for Nb and Cr thin film grown on AISI 304 stainless steel. Through tuning the micropulse oscillating voltage-off time from 10 to 40 μs, Nb and Cr thin films showed an obvious variation on microstructure owing to the deposition flux transited from continuous to chopped ones. The deposited Nb thin films showed Nb(110) preferred orientation experienced a nanocrystallization process with compressive residual stress showing a slightly decrease. While Cr thin films showed Cr(110) preferred orientation without an obvious nancrystallization trend with its compressive stress turning to be tensile. The tailoring of the microstructure and properties relied on interval time between the two interrupted ionized deposition flux.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"584 - 590"},"PeriodicalIF":2.8,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44045451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/02670844.2023.2238971
L. Gopal, T. Sudarshan
Valvular heart disease refers to any cardiovascular condition that affects one or more of the heart’s four valves: the aortic and mitral valves on the left side of the heart, and the pulmonic and tricuspid valves on the right side. While these conditions primarily develop as a result of aging, they can also be caused by congenital abnormalities, specific diseases, or physiological processes such as rheumatic heart disease and pregnancy. Surgical replacement of the faulty valve with prosthetic valves remains the preferred and most effective treatment for all types of VHD. In 2020, over 180,000 heart valve replacements were performed in the US alone [1]. Charles Hufnagel is considered the pioneer in the design of prosthetic heart valves. The first Hufnagel heart valve was implanted in 1952 using a Lucite tube and methacrylate ball in the descending aorta. Over the past century, significant advancements have been made in the development of prosthetic heart valves, and continuing research is dedicated to engineering optimal designs. [2] (Figure 1). The prosthetic heart valve comprises three components: the valve ring, the valve leaf, and the sewing ring (Figure 2). The valve ring and leaf are typically made of titanium, 316L stainless steel (SS) or cobaltchromium (Co-Cr) alloys, low-temperature isotropic pyrolytic carbon, or expanded polytetrafluoroethylene (ePTFE) or polyethylene terephthalate (PET) [3]. While progressive designs of prosthetic heart valves have improved haemodynamic properties, the introduction of a foreign object into the human body comes with its own set of complications [5]. The common problems include thrombosis, haemorrhage related to anticoagulant use, infections, valve failure, tissue hyperplasia, and overgrowth. Thrombogenicity or clot formation on the surfaces of the internal prosthesis is triggered by the adhesion and activation of platelets on them. This in turn is guided by the protein layer, especially human plasma fibrinogen (HPF). Inflammatory reactions such as restenosis and calcification are also caused by the release of toxic ions from the metals or alloys and the degradation of polymeric components of the artificial valves. A promising strategy to limit thrombogenicity is to modulate HPF behaviour at the blood-material interface by altering the physicochemical properties of the valve’s (or any prosthetic device’s) surface. Surface modifications aim to optimize various aspects of blood-material interactions, including protein adsorption, thrombin generation and blood coagulation, platelet adhesion, aggregation and activation, and cellular behaviour at the prosthesis surface [6]. A recent study showed the relationship between surface crystallographic structure and platelet adhesion. Valve rings are often made of titanium or pyrolytic carbon, the surface of which is often engineered to have a layer of titanium oxide [7]. The rutile crystallographic structure typically has three lowindex (110), (100), and (101) facets
{"title":"Surface engineering in artificial heart valves","authors":"L. Gopal, T. Sudarshan","doi":"10.1080/02670844.2023.2238971","DOIUrl":"https://doi.org/10.1080/02670844.2023.2238971","url":null,"abstract":"Valvular heart disease refers to any cardiovascular condition that affects one or more of the heart’s four valves: the aortic and mitral valves on the left side of the heart, and the pulmonic and tricuspid valves on the right side. While these conditions primarily develop as a result of aging, they can also be caused by congenital abnormalities, specific diseases, or physiological processes such as rheumatic heart disease and pregnancy. Surgical replacement of the faulty valve with prosthetic valves remains the preferred and most effective treatment for all types of VHD. In 2020, over 180,000 heart valve replacements were performed in the US alone [1]. Charles Hufnagel is considered the pioneer in the design of prosthetic heart valves. The first Hufnagel heart valve was implanted in 1952 using a Lucite tube and methacrylate ball in the descending aorta. Over the past century, significant advancements have been made in the development of prosthetic heart valves, and continuing research is dedicated to engineering optimal designs. [2] (Figure 1). The prosthetic heart valve comprises three components: the valve ring, the valve leaf, and the sewing ring (Figure 2). The valve ring and leaf are typically made of titanium, 316L stainless steel (SS) or cobaltchromium (Co-Cr) alloys, low-temperature isotropic pyrolytic carbon, or expanded polytetrafluoroethylene (ePTFE) or polyethylene terephthalate (PET) [3]. While progressive designs of prosthetic heart valves have improved haemodynamic properties, the introduction of a foreign object into the human body comes with its own set of complications [5]. The common problems include thrombosis, haemorrhage related to anticoagulant use, infections, valve failure, tissue hyperplasia, and overgrowth. Thrombogenicity or clot formation on the surfaces of the internal prosthesis is triggered by the adhesion and activation of platelets on them. This in turn is guided by the protein layer, especially human plasma fibrinogen (HPF). Inflammatory reactions such as restenosis and calcification are also caused by the release of toxic ions from the metals or alloys and the degradation of polymeric components of the artificial valves. A promising strategy to limit thrombogenicity is to modulate HPF behaviour at the blood-material interface by altering the physicochemical properties of the valve’s (or any prosthetic device’s) surface. Surface modifications aim to optimize various aspects of blood-material interactions, including protein adsorption, thrombin generation and blood coagulation, platelet adhesion, aggregation and activation, and cellular behaviour at the prosthesis surface [6]. A recent study showed the relationship between surface crystallographic structure and platelet adhesion. Valve rings are often made of titanium or pyrolytic carbon, the surface of which is often engineered to have a layer of titanium oxide [7]. The rutile crystallographic structure typically has three lowindex (110), (100), and (101) facets","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"387 - 391"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48229421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/02670844.2023.2229563
Yahua Liu, Haojie Sun, Xueguan Song, Cong Liu
ABSTRACT The anti-/de-icing technology based on induction heating offers significant advantages regarding fast heating, high efficiency, safety and environmental protection. However, the reported methods require the modification of base materials, which lacks universal applicability. Here, a universal and facile anti-/de-icing method is proposed based on induction heating. The durable induction heating coating was prepared by one-step spin coating with micron-sized nickel powder, epoxy resin and silicone resin. The induction heating ability of this coating was investigated by adjusting the proportion of composition, particle size and thickness. An optimal induction heating ability was achieved with the mass ratio of nickel powder and resin, particle size of nickel powder and coating thickness being 1.5, 7 μm and 1070 μm, respectively. We further show this coating can be applied for anti-/de-icing, demonstrated by its excellent de-/anti-icing performances. Finally, the mechanical durability of the coating was verified by the tape peel and sandpaper friction.
{"title":"A mechanically durable induction heating coating with desirable anti-/de-icing performance","authors":"Yahua Liu, Haojie Sun, Xueguan Song, Cong Liu","doi":"10.1080/02670844.2023.2229563","DOIUrl":"https://doi.org/10.1080/02670844.2023.2229563","url":null,"abstract":"ABSTRACT The anti-/de-icing technology based on induction heating offers significant advantages regarding fast heating, high efficiency, safety and environmental protection. However, the reported methods require the modification of base materials, which lacks universal applicability. Here, a universal and facile anti-/de-icing method is proposed based on induction heating. The durable induction heating coating was prepared by one-step spin coating with micron-sized nickel powder, epoxy resin and silicone resin. The induction heating ability of this coating was investigated by adjusting the proportion of composition, particle size and thickness. An optimal induction heating ability was achieved with the mass ratio of nickel powder and resin, particle size of nickel powder and coating thickness being 1.5, 7 μm and 1070 μm, respectively. We further show this coating can be applied for anti-/de-icing, demonstrated by its excellent de-/anti-icing performances. Finally, the mechanical durability of the coating was verified by the tape peel and sandpaper friction.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"413 - 420"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44626127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/02670844.2023.2232967
A. Srikanth, V. Bolleddu
ABSTRACT High-velocity oxyfuel (HVOF) sprayed ceramic coatings possess less porosity and exceptional cohesive strength as compared to the air plasma sprayed ceramic coatings. In particular, the HVOF-sprayed tungsten carbide-cobalt (WC-Co) coatings have the disadvantage of unexpected brittle fracture. These coatings usually fail at higher levels of stress because of their lower fracture toughness that results due to decarburization occurring during the deposition of the coatings. In this work, the HVOF-sprayed nanostructured WC-25wt-%Co coatings have been investigated with and without the addition of rGO. It was found in the microstructure of 1.5% rGO-added WC-25wt-%Co coatings that the rGO has been pulled out from the matrix and wrapped in the fractured regions. It was also observed with an increasing percentage of rGO addition that the porosity in the WC-25wt-%Co coatings has been reduced due to a reduction in the number of pores.
{"title":"Characteristics of reduced graphene oxide (rGO) mixed HVOF-sprayed nanostructured coatings","authors":"A. Srikanth, V. Bolleddu","doi":"10.1080/02670844.2023.2232967","DOIUrl":"https://doi.org/10.1080/02670844.2023.2232967","url":null,"abstract":"ABSTRACT High-velocity oxyfuel (HVOF) sprayed ceramic coatings possess less porosity and exceptional cohesive strength as compared to the air plasma sprayed ceramic coatings. In particular, the HVOF-sprayed tungsten carbide-cobalt (WC-Co) coatings have the disadvantage of unexpected brittle fracture. These coatings usually fail at higher levels of stress because of their lower fracture toughness that results due to decarburization occurring during the deposition of the coatings. In this work, the HVOF-sprayed nanostructured WC-25wt-%Co coatings have been investigated with and without the addition of rGO. It was found in the microstructure of 1.5% rGO-added WC-25wt-%Co coatings that the rGO has been pulled out from the matrix and wrapped in the fractured regions. It was also observed with an increasing percentage of rGO addition that the porosity in the WC-25wt-%Co coatings has been reduced due to a reduction in the number of pores.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"421 - 432"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47579158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/02670844.2023.2235747
Shu-Yu Gui, Huajun Gong, Yijia Sun, Chong Feng
ABSTRACT During electrical discharge machining (EDM) drilling of small high-aspect-ratio holes, abnormal discharges between tool flank and workpiece will result in high process instability and poor shape accuracy. In order to solve this problem, dense nano-alumina insulating film is plated on the tool flank based on atomic layer deposition (ALD) to suppress the secondary discharge for the benefit of the tool’s integrity and shape accuracy. Drilling experiments on nickel base superalloy GH4099 workpiece were conducted to test machining effect of the coated brass tool. Experimental results show that it can enhance the process stability and improve the surface topography of the machined holes. The tool wear is reduced by about 21.7%, and the discharge craters and carbon black film along the tool flank are significantly reduced.
{"title":"Experimental investigation of the EDM tools coated with nano-alumina film","authors":"Shu-Yu Gui, Huajun Gong, Yijia Sun, Chong Feng","doi":"10.1080/02670844.2023.2235747","DOIUrl":"https://doi.org/10.1080/02670844.2023.2235747","url":null,"abstract":"ABSTRACT During electrical discharge machining (EDM) drilling of small high-aspect-ratio holes, abnormal discharges between tool flank and workpiece will result in high process instability and poor shape accuracy. In order to solve this problem, dense nano-alumina insulating film is plated on the tool flank based on atomic layer deposition (ALD) to suppress the secondary discharge for the benefit of the tool’s integrity and shape accuracy. Drilling experiments on nickel base superalloy GH4099 workpiece were conducted to test machining effect of the coated brass tool. Experimental results show that it can enhance the process stability and improve the surface topography of the machined holes. The tool wear is reduced by about 21.7%, and the discharge craters and carbon black film along the tool flank are significantly reduced.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"506 - 513"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49562845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/02670844.2023.2232969
Patcharaporn Phuinthiang, D. Channei, K. Ratananikom, A. Nakaruk, W. Khanitchaidecha
ABSTRACT This work aimed to enhance the surface properties of common food packaging materials (PVC, PS, PET, PVDC) by applying a TiO2 nano thin film coating. Physical and chemical analyses confirmed a well-defined anatase phase film. PET showed the highest antibacterial activity, followed by PVDC, PS, and PVC. After 60 min of UV-A irradiation, E. coli elimination rates were 99.85% (PET), 97.14% (PVDC), 96.5% (PS), and 85.91% (PVC). Similarly, for S. Typhimurium, the respective rates were 97.8% (PET), 83.71% (PVDC), 74.79% (PS), and 68.94% (PVC). Complete eradication of both strains occurred within 120 min (E. coli) and 180 min (S. Typhimurium). Durability testing revealed PET's mass loss of 97 mg/kg after 15 cycles, while PVC had the lowest value of 7 mg/kg. These findings demonstrate that TiO2 thin film-coated substrates effectively inhibit bacteria growth, extending food product shelf life.
{"title":"Antibacterial properties of TiO2 nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium","authors":"Patcharaporn Phuinthiang, D. Channei, K. Ratananikom, A. Nakaruk, W. Khanitchaidecha","doi":"10.1080/02670844.2023.2232969","DOIUrl":"https://doi.org/10.1080/02670844.2023.2232969","url":null,"abstract":"ABSTRACT This work aimed to enhance the surface properties of common food packaging materials (PVC, PS, PET, PVDC) by applying a TiO2 nano thin film coating. Physical and chemical analyses confirmed a well-defined anatase phase film. PET showed the highest antibacterial activity, followed by PVDC, PS, and PVC. After 60 min of UV-A irradiation, E. coli elimination rates were 99.85% (PET), 97.14% (PVDC), 96.5% (PS), and 85.91% (PVC). Similarly, for S. Typhimurium, the respective rates were 97.8% (PET), 83.71% (PVDC), 74.79% (PS), and 68.94% (PVC). Complete eradication of both strains occurred within 120 min (E. coli) and 180 min (S. Typhimurium). Durability testing revealed PET's mass loss of 97 mg/kg after 15 cycles, while PVC had the lowest value of 7 mg/kg. These findings demonstrate that TiO2 thin film-coated substrates effectively inhibit bacteria growth, extending food product shelf life.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"433 - 444"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43851002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/02670844.2023.2232970
Shreyansh Shrivastava, Vijay Kumar, R. Verma, Varun Sharma
ABSTRACT The aim of this work was to investigate the flexural strength and corrosion behaviour of graphene-reinforced WC-10Co-4Cr HVOF coating on sandblasted and laser-textured DH-36 naval-grade steel. In this regard, WC-10Co-4Cr and WC-10Co-4Cr + 3% graphene nanoparticles (GNPs) are applied on DH-36 substrates using the HVOF coating technique and their microhardness, flexural strength and corrosion behaviour are investigated. Amongst all, the flexural strength of WC-10Co-4Cr + 3%GNPs coating on laser-textured sample with pitch-to-diameter (p/d) ratio 2 was minimum (327.006 MPa) due to the effect of GNPs and better mechanical interlocking at the coating-substrate interface. Also, the corrosion resistance of coated DH-36 steel was evaluated by salt spray test; it revealed that corrosion resistance was improved with the application of WC-10Co-4Cr coating, which was further enhanced by the addition of GNPs as GNP has the property of being impermeable to gasses and salts. Further, microstructures and morphologies of the corroded surface were investigated using FE-SEM images.
{"title":"Flexural and corrosion behaviour of WC-10Co-4Cr + Graphene sprayed on textured HSLA-steel","authors":"Shreyansh Shrivastava, Vijay Kumar, R. Verma, Varun Sharma","doi":"10.1080/02670844.2023.2232970","DOIUrl":"https://doi.org/10.1080/02670844.2023.2232970","url":null,"abstract":"ABSTRACT The aim of this work was to investigate the flexural strength and corrosion behaviour of graphene-reinforced WC-10Co-4Cr HVOF coating on sandblasted and laser-textured DH-36 naval-grade steel. In this regard, WC-10Co-4Cr and WC-10Co-4Cr + 3% graphene nanoparticles (GNPs) are applied on DH-36 substrates using the HVOF coating technique and their microhardness, flexural strength and corrosion behaviour are investigated. Amongst all, the flexural strength of WC-10Co-4Cr + 3%GNPs coating on laser-textured sample with pitch-to-diameter (p/d) ratio 2 was minimum (327.006 MPa) due to the effect of GNPs and better mechanical interlocking at the coating-substrate interface. Also, the corrosion resistance of coated DH-36 steel was evaluated by salt spray test; it revealed that corrosion resistance was improved with the application of WC-10Co-4Cr coating, which was further enhanced by the addition of GNPs as GNP has the property of being impermeable to gasses and salts. Further, microstructures and morphologies of the corroded surface were investigated using FE-SEM images.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"457 - 472"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45834890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/02670844.2023.2227441
Yan Zhou, Qian Li, A. Atrens, Liang-ping Wu
ABSTRACT Magnesium alloys are low in density, high in strength and non-toxic, nevertheless, their industrial application is substantially limited owing to their low electrode potential and susceptibility to corrosion. Surface and coating technology is widely used to improve their corrosion resistance. Graphene is one candidate material for anti-corrosion coatings because of its high aspect ratio, outstanding chemical resistance and good physical resistance. Its good barrier properties mean that graphene may have a wide range of applications in magnesium alloy coatings. This paper reviews (i) the potential of graphene for anti-corrosion coatings, (ii) the production methods and types of graphene anti-corrosion coatings, (iii) their properties, (iv) the protection mechanisms and (v) the future development trends of graphene-based corrosion protective coatings on magnesium alloys.
{"title":"Graphene-based anti-corrosion coatings on magnesium alloys: a review","authors":"Yan Zhou, Qian Li, A. Atrens, Liang-ping Wu","doi":"10.1080/02670844.2023.2227441","DOIUrl":"https://doi.org/10.1080/02670844.2023.2227441","url":null,"abstract":"ABSTRACT Magnesium alloys are low in density, high in strength and non-toxic, nevertheless, their industrial application is substantially limited owing to their low electrode potential and susceptibility to corrosion. Surface and coating technology is widely used to improve their corrosion resistance. Graphene is one candidate material for anti-corrosion coatings because of its high aspect ratio, outstanding chemical resistance and good physical resistance. Its good barrier properties mean that graphene may have a wide range of applications in magnesium alloy coatings. This paper reviews (i) the potential of graphene for anti-corrosion coatings, (ii) the production methods and types of graphene anti-corrosion coatings, (iii) their properties, (iv) the protection mechanisms and (v) the future development trends of graphene-based corrosion protective coatings on magnesium alloys.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"392 - 412"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41513848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/02670844.2023.2233256
V. Kumaran, B. Muralidharan
ABSTRACT This paper reports the effect of coating thickness on adhesive properties, and residual stresses by the electric discharge coating (EDC) process on Mg alloy with copper (Cu) nickel (Ni) powder metallurgical (P/M) electrodes. The composite coating layer thickness was measured by optical microscope and it ranges from 10.2 to 102.4 µm. The coating layer was characterized by a Field emission scanning microscope (FESEM) and Energy-dispersive spectroscopy (EDS). X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses were made to identify the chemical composition and functional group. Residual stresses were evaluated by an ETA diffractometer and it revealed that compressive residual stress increases with a range of −458 ± 118 MPa to −1078 ± 125 MPa and tensile residual stresses decrease from 656 ± 113 MPa to 27 ± 11 MPa. The critical load is measured by scratch test. The result shows the adhesive strength of the coated surface was improved with an increase in layer thickness.
{"title":"Analysis of adhesion strength and residual stresses developed by the EDC process","authors":"V. Kumaran, B. Muralidharan","doi":"10.1080/02670844.2023.2233256","DOIUrl":"https://doi.org/10.1080/02670844.2023.2233256","url":null,"abstract":"ABSTRACT This paper reports the effect of coating thickness on adhesive properties, and residual stresses by the electric discharge coating (EDC) process on Mg alloy with copper (Cu) nickel (Ni) powder metallurgical (P/M) electrodes. The composite coating layer thickness was measured by optical microscope and it ranges from 10.2 to 102.4 µm. The coating layer was characterized by a Field emission scanning microscope (FESEM) and Energy-dispersive spectroscopy (EDS). X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses were made to identify the chemical composition and functional group. Residual stresses were evaluated by an ETA diffractometer and it revealed that compressive residual stress increases with a range of −458 ± 118 MPa to −1078 ± 125 MPa and tensile residual stresses decrease from 656 ± 113 MPa to 27 ± 11 MPa. The critical load is measured by scratch test. The result shows the adhesive strength of the coated surface was improved with an increase in layer thickness.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"445 - 456"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48220513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/02670844.2023.2233258
Zhiwei Su, Yanwen Zhou, Yan Caibo, Zhang Kaice
ABSTRACT To reduce the destruction of organic biological fouling in marine steel, nickel-based (NiCrAlY) transition coatings with and without silver (Ag) doping were prepared on AH32 marine steel by plasma spraying. The coatings exhibited a layered structure, and AlNi3 (111), (200), and (220) diffraction peaks were detected. The Ag (111) peaks were also observed for the Ag-doped coatings. The number of sulphate-reducing bacteria (SRB) adsorbed on the coating surfaces reduced after immersion in the bacterial solution, and their shells were disintegrated because of the presence of Ag. The corrosion potentials of AH32, NiCrAlY, and NiCrAlY(Ag) coated AH32 plates were nearly identical at approximately −720 mV. After being covered with organic paint, the corrosion potential and current density of the NiCrAlY(Ag) coating increased to −624 mV and decreased by one order of 2.75 × 10− 6 A cm−2, respectively. The NiCrAlY(Ag) coating effectively inhibited biological fouling.
摘要为了减少船用钢中有机生物结垢的破坏，采用等离子喷涂法在AH32船用钢上制备了含银和不含银的镍基（NiCrAlY）过渡涂层。涂层表现出层状结构，并且检测到AlNi3（111）、（200）和（220）衍射峰。对于Ag掺杂的涂层，也观察到Ag（111）峰。吸附在涂层表面的硫酸盐还原菌（SRB）的数量在浸入细菌溶液后减少，并且由于Ag的存在，它们的外壳被分解。AH32、NiCrAlY和NiCrAlY（Ag）涂层的AH32板的腐蚀电位几乎相同，约为−720 mV。用有机涂料覆盖后，NiCrAlY（Ag）涂层的腐蚀电位和电流密度增加到−624 mV，并降低了2.75的一个数量级 × 10−6 A. cm−2。NiCrAlY（Ag）涂层有效地抑制了生物结垢。
{"title":"Biological fouling and corrosion resistance of Ni-based coating on AH32","authors":"Zhiwei Su, Yanwen Zhou, Yan Caibo, Zhang Kaice","doi":"10.1080/02670844.2023.2233258","DOIUrl":"https://doi.org/10.1080/02670844.2023.2233258","url":null,"abstract":"ABSTRACT To reduce the destruction of organic biological fouling in marine steel, nickel-based (NiCrAlY) transition coatings with and without silver (Ag) doping were prepared on AH32 marine steel by plasma spraying. The coatings exhibited a layered structure, and AlNi3 (111), (200), and (220) diffraction peaks were detected. The Ag (111) peaks were also observed for the Ag-doped coatings. The number of sulphate-reducing bacteria (SRB) adsorbed on the coating surfaces reduced after immersion in the bacterial solution, and their shells were disintegrated because of the presence of Ag. The corrosion potentials of AH32, NiCrAlY, and NiCrAlY(Ag) coated AH32 plates were nearly identical at approximately −720 mV. After being covered with organic paint, the corrosion potential and current density of the NiCrAlY(Ag) coating increased to −624 mV and decreased by one order of 2.75 × 10− 6 A cm−2, respectively. The NiCrAlY(Ag) coating effectively inhibited biological fouling.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"473 - 480"},"PeriodicalIF":2.8,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47145767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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