Microstructure and Properties of Cold Sprayed NiCrAl Coating on AZ91D Magnesium Alloy

Zhao, Xiangwei; Dong, Tian-shun; Fu, Bin-guo; Li, Guolu; Liu, Qi; Li, Yanjiao

doi:10.3390/coatings11020193

Cited by 9 publications

(5 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The higher process gas temperature enabled a full and efficient densification of the CS Zr coating which can promote a stronger bonding of Zr powder particles, thus increasing the wear resistance. track, it appears to have parallel furrows, which have also been observed in other CS literature [115]. These results indicate that the localized stress of the coating (compared to S1) is decreased during tribological contact in addition to the increased hardness.…”

Section: Wear Of the Bare And Coated Al6061 Alloyssupporting

confidence: 86%

“…In the case of specimen S5, the wear track is non-symmetrical and, in some regions, does not have the appearance of material loss. To characterize the wear track, it appears to have parallel furrows, which have also been observed in other CS literature [115]. These results indicate that the localized stress of the coating (compared to S1) is decreased during tribological contact in addition to the increased hardness.…”

Section: Wear Of the Bare And Coated Al6061 Alloyssupporting

confidence: 79%

See 1 more Smart Citation

Effect of Gas Propellant Temperature on the Microstructure, Friction, and Wear Resistance of High-Pressure Cold Sprayed Zr702 Coatings on Al6061 Alloy

et al. 2022

View full text Add to dashboard Cite

For the first time, Zr702 coatings were deposited onto an Al6061 alloy using a high-pressure cold spray (HPCS) system. In this work, five different N2 process gas temperatures between 700 and 1100 °C were employed to understand the formation of cold sprayed (CS) Zr coatings and their feasibility for enhanced wear resistance. Results indicated that the N2 processing gas temperature of about 1100 °C enabled a higher degree of particle thermal softening, which created a dense, robust, oxide- and defect-free Zr coating. Across all CS Zr coatings, there was a refinement of crystallinity, which was attributed to the severe localized plastic deformation of the powder particles. The enhanced thermal boost up zone at the inter-particle boundaries and decreased recoverable elastic strain were accountable for the inter-particle bonding of the coatings at higher process gas temperatures. The flattening ratio (ε) increased as a function of temperature, implying that there was a greater degree of plastic deformation at higher N2 gas temperatures. The microhardness readings and wear volume of the coatings were also improved as a function of process gas temperature. In this work, the wear of the Al6061 alloy substrate was mainly plowing-based, whereas the Zr CS substrates demonstrated a gradual change of abrasive to adhesive wear. From our findings, the preparation of CS Zr coatings was a feasible method of enhancing the wear resistance of Al-based alloys.

show abstract

Section: Wear Of the Bare And Coated Al6061 Alloyssupporting

confidence: 86%

Section: Wear Of the Bare And Coated Al6061 Alloyssupporting

confidence: 79%

Effect of Gas Propellant Temperature on the Microstructure, Friction, and Wear Resistance of High-Pressure Cold Sprayed Zr702 Coatings on Al6061 Alloy

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Different techniques were used to coat such a diverse range of composite materials [65][66][67][68][69][70][71][72][73][74][75][76] are summarized in Figure 7. In contrast to the single coatings, where CCC and electrodeposition were the most prevalent, the electroless coating method was widely applied for the deposition of composite coatings on AZ91D substrate.…”

Section: Composite Coatingsmentioning

confidence: 99%

“…High‐pressure gas carries fine metal powders and preheated gas into the chamber, designed with a specific nozzle arrangement to increase their velocity further. [ 76 ] Compressed gas with preheated metal particles now passes through a nozzle with a very high velocity (400–1600 m s −1 ). When these metal particles impact the substrate, they are deformed and bonded together to form a coating.…”

Section: Coating Materials and Techniques: Overall Developments (2012...mentioning

confidence: 99%

An Impact of the Recent Developments in Coating Materials and Techniques on the Corrosion Response of AZ91D Alloy: A Review

et al. 2023

View full text Add to dashboard Cite

AZ91D, a die‐casted alloy, offers several benefits (better saltwater corrosion resistance, suitable castability, and good atmospheric stability) over other grades of magnesium alloy. However, it cannot overcome the challenging requirements of advanced applications in its current form. Extensive research in coating technologies is crucial in enhancing the performance of AZ91D alloy in highly corrosive environments (coastal and marine, industrial, farm, etc.). The high corrosion resistance of AZ91D for various applications is achievable through the deposition of different materials. Developments in coating materials and techniques, with their influence on the corrosion protection behavior of AZ91D alloy, over the last decade (2012–2022), are focused on in this study. It is observed that composite, biodegradable, and self‐healing coatings are gaining popularity. The transition in the coating technology, from conventional to self‐healing coating materials and from conventional to environment‐friendly coating techniques, is a vital part of this discussion. This review further explores how different additives, pre‐treatments, post‐treatments, and corrosion inhibitors affect the corrosion performance of coatings. This study helps select the optimum coating material for AZ91D magnesium alloy to fulfil a specific application requirement and guides toward technological developments in this segment.

show abstract

“…Cold spray technology refers to a solid-state process exhibiting a high spray rate and deposition efficiency [11]. Compared to thermal spray techniques, cold spray techniques are effective in preventing grain growth, phase transformation, and coating oxidation due to the lower working environment temperature, thus contributing to the production of dense coatings for oxidation-sensitive and heat-sensitive materials [12].…”

Section: Introductionmentioning

confidence: 99%

Study of Wear and Corrosion Resistance of Cold Sprayed TC4 Coating on the Surface of Mg-Li Alloy

Bao

Jiao³

et al. 2023

Coatings

Self Cite

View full text Add to dashboard Cite

Mg-Li alloys have achieved vital applications in aerospace, automotive, and 3C fields for their prominent properties. However, the Mg-Li alloy exhibits poor corrosion and wear resistance due to the high activity of Mg and Li elements and low hardness of Mg. Accordingly, TC4 alloy coating was prepared on the surface of Mg-Li alloy using the cold spray technique to enhance the surface properties. Moreover, the microstructure, microhardness, tribological properties, and corrosion resistance of the coating were systematically investigated. As indicated by the results, the interface between the coating and the Mg-Li alloy substrate was mechanical bonding without significant defects. Several pores exist in the cold sprayed TC4 coating for its high elasticity, toughness, and passivation, resulting in a porosity of 4.3%. The microhardness of the cold sprayed TC4 coating reached 296.3 HV, marking a notable increase in comparison with the substrate. The TC4 alloy coating has better wear resistance than the Mg-Li alloy substrate. The wear volume of the cold sprayed TC4 alloy only accounted for 38% of that of Mg-Li alloy. Abrasive wear was the major wear mechanism of the TC4 alloy coating. In electrochemical tests, the corrosion current density of the TC4 alloy coating (1.426 × 10−5 A/cm2) was two orders of magnitude lower than that of the magnesium-lithium alloy substrate (1.008 × 10−3 A/cm2), and the corrosion potential of the TC4 alloy coating was higher, which indicates that the coating has excellent corrosion resistance.

show abstract

Microstructure and Properties of Cold Sprayed NiCrAl Coating on AZ91D Magnesium Alloy

Cited by 9 publications

References 42 publications

Effect of Gas Propellant Temperature on the Microstructure, Friction, and Wear Resistance of High-Pressure Cold Sprayed Zr702 Coatings on Al6061 Alloy

Effect of Gas Propellant Temperature on the Microstructure, Friction, and Wear Resistance of High-Pressure Cold Sprayed Zr702 Coatings on Al6061 Alloy

An Impact of the Recent Developments in Coating Materials and Techniques on the Corrosion Response of AZ91D Alloy: A Review

Study of Wear and Corrosion Resistance of Cold Sprayed TC4 Coating on the Surface of Mg-Li Alloy

Contact Info

Product

Resources

About