The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform
M Jalali - One of the best experts on this subject based on the ideXlab platform.
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Study of the corrosion properties of zinc–nickel alloy electrodeposits before and after chromating
Journal of Materials Processing Technology, 2003Co-Authors: M. Heydarzadeh Sohi, M JalaliAbstract:Abstract In this study, corrosion behavior of zinc–nickel alloy electrodeposits on steel sheets has been investigated using the neutral salt spray test. The performance of the coatings with various nickel contents (up to 28 wt.%) was compared with electrodeposited zinc coating. The results show that the corrosion resistance of zinc–nickel alloy coatings is superior to that of pure zinc coating and the zinc–13 wt.% nickel gives the best protection. The corrosion behavior of chromated zinc–nickel alloy coatings was also studied. The results show that chromate conversion coating increases the corrosion resistance significantly (up to 3–4 times), and the best corrosion resistance is achieved by chromating of zinc–13 wt.% nickel alloy coating.
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study of the corrosion properties of zinc nickel alloy electrodeposits before and after chromating
Journal of Materials Processing Technology, 2003Co-Authors: Heydarzadeh M Sohi, M JalaliAbstract:Abstract In this study, corrosion behavior of zinc–nickel alloy electrodeposits on steel sheets has been investigated using the neutral salt spray test. The performance of the coatings with various nickel contents (up to 28 wt.%) was compared with electrodeposited zinc coating. The results show that the corrosion resistance of zinc–nickel alloy coatings is superior to that of pure zinc coating and the zinc–13 wt.% nickel gives the best protection. The corrosion behavior of chromated zinc–nickel alloy coatings was also studied. The results show that chromate conversion coating increases the corrosion resistance significantly (up to 3–4 times), and the best corrosion resistance is achieved by chromating of zinc–13 wt.% nickel alloy coating.
Jerzy A. Szpunar - One of the best experts on this subject based on the ideXlab platform.
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ultrasound assisted synthesis of zinc molybdate nanocrystals and molybdate doped epoxy pdms nanocomposite coatings for mg alloy protection
Ultrasonics Sonochemistry, 2018Co-Authors: Ubong Eduok, Jerzy A. SzpunarAbstract:Abstract Zinc molybdate (ZM) is a safer anticorrosive additive for cooling systems when compared with Chromates and lead salts, due to its insolubility in aqueous media. For most molybdate pigments, their molybdate anion ( MoO 4 - 2 ) acts as an anionic inhibitor and its passivation capacity is comparable with chromate anion ( CrO 4 - 2 ). To alleviate the environmental concerns involving Chromates-based industrial protective coatings, we have proposed new alternative in this work. We have synthesized ZM nanocrystals via ultrasound-assisted process and encapsulated them within an epoxy/PDMS coating towards corrosion protection. The surface morphology and mechanical properties of these ZM doped epoxy/PDMS nanocomposite coatings is exhaustively discussed to show the effect of ZM content on protective properties. The presence of ZM nanocrystals significantly contributed to the corrosion barrier performance of the coating while the amount of ZM nanocrystals needed to prepare an epoxy coating with optimum barrier performance was established. Beyond 2 wt% ZM concentration, the siloxane-structured epoxy coating network became saturated with ZM pigments. This further broadened inherent pores channels, leading to the percolation of corrosion chloride ions through the coating. SEM evidence has revealed proof of surface delamination on ZM3 coating. A model mechanism of corrosion resistance has been proposed for ZM doped epoxy/PDMS nanocomposite coatings from exhaustive surface morphological investigations and evidence. This coating matrix may have emerging applications in cooling systems as anticorrosive surface paints as well as create an avenue for environmental corrosion remediation.
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Ultrasound-assisted synthesis of zinc molybdate nanocrystals and molybdate-doped epoxy/PDMS nanocomposite coatings for Mg alloy protection.
Ultrasonics Sonochemistry, 2018Co-Authors: Ubong Eduok, Jerzy A. SzpunarAbstract:Abstract Zinc molybdate (ZM) is a safer anticorrosive additive for cooling systems when compared with Chromates and lead salts, due to its insolubility in aqueous media. For most molybdate pigments, their molybdate anion ( MoO 4 - 2 ) acts as an anionic inhibitor and its passivation capacity is comparable with chromate anion ( CrO 4 - 2 ). To alleviate the environmental concerns involving Chromates-based industrial protective coatings, we have proposed new alternative in this work. We have synthesized ZM nanocrystals via ultrasound-assisted process and encapsulated them within an epoxy/PDMS coating towards corrosion protection. The surface morphology and mechanical properties of these ZM doped epoxy/PDMS nanocomposite coatings is exhaustively discussed to show the effect of ZM content on protective properties. The presence of ZM nanocrystals significantly contributed to the corrosion barrier performance of the coating while the amount of ZM nanocrystals needed to prepare an epoxy coating with optimum barrier performance was established. Beyond 2 wt% ZM concentration, the siloxane-structured epoxy coating network became saturated with ZM pigments. This further broadened inherent pores channels, leading to the percolation of corrosion chloride ions through the coating. SEM evidence has revealed proof of surface delamination on ZM3 coating. A model mechanism of corrosion resistance has been proposed for ZM doped epoxy/PDMS nanocomposite coatings from exhaustive surface morphological investigations and evidence. This coating matrix may have emerging applications in cooling systems as anticorrosive surface paints as well as create an avenue for environmental corrosion remediation.
Ubong Eduok - One of the best experts on this subject based on the ideXlab platform.
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ultrasound assisted synthesis of zinc molybdate nanocrystals and molybdate doped epoxy pdms nanocomposite coatings for mg alloy protection
Ultrasonics Sonochemistry, 2018Co-Authors: Ubong Eduok, Jerzy A. SzpunarAbstract:Abstract Zinc molybdate (ZM) is a safer anticorrosive additive for cooling systems when compared with Chromates and lead salts, due to its insolubility in aqueous media. For most molybdate pigments, their molybdate anion ( MoO 4 - 2 ) acts as an anionic inhibitor and its passivation capacity is comparable with chromate anion ( CrO 4 - 2 ). To alleviate the environmental concerns involving Chromates-based industrial protective coatings, we have proposed new alternative in this work. We have synthesized ZM nanocrystals via ultrasound-assisted process and encapsulated them within an epoxy/PDMS coating towards corrosion protection. The surface morphology and mechanical properties of these ZM doped epoxy/PDMS nanocomposite coatings is exhaustively discussed to show the effect of ZM content on protective properties. The presence of ZM nanocrystals significantly contributed to the corrosion barrier performance of the coating while the amount of ZM nanocrystals needed to prepare an epoxy coating with optimum barrier performance was established. Beyond 2 wt% ZM concentration, the siloxane-structured epoxy coating network became saturated with ZM pigments. This further broadened inherent pores channels, leading to the percolation of corrosion chloride ions through the coating. SEM evidence has revealed proof of surface delamination on ZM3 coating. A model mechanism of corrosion resistance has been proposed for ZM doped epoxy/PDMS nanocomposite coatings from exhaustive surface morphological investigations and evidence. This coating matrix may have emerging applications in cooling systems as anticorrosive surface paints as well as create an avenue for environmental corrosion remediation.
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Ultrasound-assisted synthesis of zinc molybdate nanocrystals and molybdate-doped epoxy/PDMS nanocomposite coatings for Mg alloy protection.
Ultrasonics Sonochemistry, 2018Co-Authors: Ubong Eduok, Jerzy A. SzpunarAbstract:Abstract Zinc molybdate (ZM) is a safer anticorrosive additive for cooling systems when compared with Chromates and lead salts, due to its insolubility in aqueous media. For most molybdate pigments, their molybdate anion ( MoO 4 - 2 ) acts as an anionic inhibitor and its passivation capacity is comparable with chromate anion ( CrO 4 - 2 ). To alleviate the environmental concerns involving Chromates-based industrial protective coatings, we have proposed new alternative in this work. We have synthesized ZM nanocrystals via ultrasound-assisted process and encapsulated them within an epoxy/PDMS coating towards corrosion protection. The surface morphology and mechanical properties of these ZM doped epoxy/PDMS nanocomposite coatings is exhaustively discussed to show the effect of ZM content on protective properties. The presence of ZM nanocrystals significantly contributed to the corrosion barrier performance of the coating while the amount of ZM nanocrystals needed to prepare an epoxy coating with optimum barrier performance was established. Beyond 2 wt% ZM concentration, the siloxane-structured epoxy coating network became saturated with ZM pigments. This further broadened inherent pores channels, leading to the percolation of corrosion chloride ions through the coating. SEM evidence has revealed proof of surface delamination on ZM3 coating. A model mechanism of corrosion resistance has been proposed for ZM doped epoxy/PDMS nanocomposite coatings from exhaustive surface morphological investigations and evidence. This coating matrix may have emerging applications in cooling systems as anticorrosive surface paints as well as create an avenue for environmental corrosion remediation.
Heydarzadeh M Sohi - One of the best experts on this subject based on the ideXlab platform.
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study of the corrosion properties of zinc nickel alloy electrodeposits before and after chromating
Journal of Materials Processing Technology, 2003Co-Authors: Heydarzadeh M Sohi, M JalaliAbstract:Abstract In this study, corrosion behavior of zinc–nickel alloy electrodeposits on steel sheets has been investigated using the neutral salt spray test. The performance of the coatings with various nickel contents (up to 28 wt.%) was compared with electrodeposited zinc coating. The results show that the corrosion resistance of zinc–nickel alloy coatings is superior to that of pure zinc coating and the zinc–13 wt.% nickel gives the best protection. The corrosion behavior of chromated zinc–nickel alloy coatings was also studied. The results show that chromate conversion coating increases the corrosion resistance significantly (up to 3–4 times), and the best corrosion resistance is achieved by chromating of zinc–13 wt.% nickel alloy coating.
M. Heydarzadeh Sohi - One of the best experts on this subject based on the ideXlab platform.
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Study of the corrosion properties of zinc–nickel alloy electrodeposits before and after chromating
Journal of Materials Processing Technology, 2003Co-Authors: M. Heydarzadeh Sohi, M JalaliAbstract:Abstract In this study, corrosion behavior of zinc–nickel alloy electrodeposits on steel sheets has been investigated using the neutral salt spray test. The performance of the coatings with various nickel contents (up to 28 wt.%) was compared with electrodeposited zinc coating. The results show that the corrosion resistance of zinc–nickel alloy coatings is superior to that of pure zinc coating and the zinc–13 wt.% nickel gives the best protection. The corrosion behavior of chromated zinc–nickel alloy coatings was also studied. The results show that chromate conversion coating increases the corrosion resistance significantly (up to 3–4 times), and the best corrosion resistance is achieved by chromating of zinc–13 wt.% nickel alloy coating.