Cold-Sprayed Cu-Zn-Al2O3 Coating on Magnesium Alloy: Enhanced Microhardness and Corrosion Behavior

Mouli, G. Chandra; Chakradhar, R.P.S.; Srivastava, Meenu; Barshilia, Harish C.

doi:10.1007/s11665-022-07551-4

Cited by 6 publications

(2 citation statements)

References 87 publications

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“…A modified cold spray technique was used to deposit the high-purity Al and AlMgSi alloy coatings on Mg alloys, increasing their corrosion resistance and fatigue lifespan [19]. Additionally, the addition of Al 2 O 3 to cold-sprayed coatings effectively increased the corrosion and wear resistance [20][21][22]. This is due to the fact that the addition of alumina particles would improve the bonding and deposition quality to produce outstanding composite coatings [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Al-Based Ceramic Coating Deposited on Magnesium Alloy Surface by Cold Spraying

Ci¹,

Wang

Hu³

et al. 2023

Coatings

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In this study, pure Al and Al-Al2O3 composite coatings with a low porosity and high density were prepared on magnesium alloys by cold spraying. The surface morphology, component, hardness, interfacial bonding, wear and corrosion properties were investigated. Additionally, the relationship between the interface structure and the protective coatings’ quality was preliminarily established. Pure Al powder was used to create a coating with a homogeneous and dense microstructure. The hard-phase Al2O3 in the composite coatings was non-oxidized and would reduce the porosity of the coatings to improve their density and interfacial bonding by up to 55.82 MPa. The bonding mode of the pure Al coatings is primarily mechanical, whereas the bonding mode of the Al-Al2O3 mixed coatings is mechanical and metallurgical. The tough Al2O3 particles combined to form a layer of work-hardening reinforcement that resisted wear and effectively prevented it from spreading. The three Al-based coatings had excellent corrosion properties, as evidenced by their corrosion current being several orders of magnitude lower than that of the magnesium alloy substrates. The thick coating was significantly more corrosion-resistant than the thin coating and provided greater protection to the substrate. This study offers theoretical and technological assistance for the surface protection of magnesium alloy equipment in demanding conditions.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Al-Based Ceramic Coating Deposited on Magnesium Alloy Surface by Cold Spraying

Ci¹,

Wang

Hu³

et al. 2023

Coatings

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show abstract

“…However, their high chemical reactivity and tendency to corrode, even in air, are major obstacles that hinder their widespread use [4,5]. Various surface treatments, such as thermal spraying [6], cold spraying [7], electroplating [8], anodizing [9], and electroless plating [10], have been applied to Mg and its alloys to provide new functionalities and long-term anti-corrosion properties. Plasma electrolytic oxidation (PEO), also called micro-arc oxidation (MAO), is an effective one-step surface-treatment process derived from conventional anodizing [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cr Nanoparticles on Plasma Electrolytic Oxidation Coatings on AM50 Mg Alloy

Chen

et al. 2023

Coatings

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The addition of Cr nanoparticles to a plasma electrolytic oxidation (PEO) electrolyte offers the possibility of producing layers with a broader range of coating compositions and improved properties. In this study, the effects of nanoparticles and various voltages on coating formation, microscopic morphology, and phase composition were investigated with in situ incorporation of Cr nanoparticles into PEO-coated Mg alloy. The results show that the corrosion performance of the coating was significantly improved when the final voltage was set to 460 V and the concentration of Cr nanoparticles was 1 g/L. Compared to the particle-free coating, the corrosion current density of the coating with the addition of 1 g/L Cr nanoparticles was reduced by two orders of magnitude. The impedance at the low frequency (0.01 Hz) increased by more than one order of magnitude after one hour of immersion, indicating a considerable improvement in corrosion resistance. Due to the high temperature during the coating-formation process, the Cr nanoparticles were oxidized, resulting in the formation of Cr2O3. The existence of Cr2O3 slightly increased the growth rate of the coating and sealed the open pores of the coating.

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Response Surface Methodology and Mayfly Optimization for Predicting the Properties of Cold-Sprayed AA2024/Al2O3 Coatings on AZ31B Magnesium Alloy

Mohankumar,

Duraisamy,

Packkirisamy

et al. 2023

J. of Materi Eng and Perform

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Cold-Sprayed Cu-Zn-Al2O3 Coating on Magnesium Alloy: Enhanced Microhardness and Corrosion Behavior

Cited by 6 publications

References 87 publications

Microstructure and Properties of Al-Based Ceramic Coating Deposited on Magnesium Alloy Surface by Cold Spraying

Microstructure and Properties of Al-Based Ceramic Coating Deposited on Magnesium Alloy Surface by Cold Spraying

Influence of Cr Nanoparticles on Plasma Electrolytic Oxidation Coatings on AM50 Mg Alloy

Response Surface Methodology and Mayfly Optimization for Predicting the Properties of Cold-Sprayed AA2024/Al2O3 Coatings on AZ31B Magnesium Alloy

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