The Corrosion Behavior of Cold Sprayed Zinc Coatings on Mild Steel Substrate

Chavan, Naveen Manhar; Kiran, B. Hari Sai; Jyothirmayi, A.; Phani, P. Sudharshan; Sundararajan, G.

doi:10.1007/s11666-013-9893-z

Cited by 94 publications

(47 citation statements)

References 37 publications

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“…On the other hand, the heat-treated coatings showed an improved intersplat bonding and porosity decrease. Similar results were found for heat-treated cold-sprayed zinc coatings 55 , SS 304 coatings 100 and titanium coatings 93 . EIS measurements of the zinc coatings 55 during 80…”

Section: Some Relevant Corrosion Studies Of Cold Spray Coatings and Csupporting

confidence: 84%

“…In summary, heat treatment improves the bonding quality and diminishes interparticle boundaries, which are preferential sites for corrosion. Moreover, the heat treatment decreases the coating porosity and increases the coating barrier effect 51,55,93 Figure 17. Schematic representation of the evolution of cold spray coatings during heat treatment.…”

Section: Some Relevant Corrosion Studies Of Cold Spray Coatings and Cmentioning

confidence: 99%

“…The increase of R corr value is probably the result of the formation and deposition of corrosion products which interfere in the corrosion process within the pores 55 . On the other hand, for the heat-treated coating, the R corr value reaches a maximum only at 72 h. This indicates that the corrosion products start interfering with the corrosion process at the pores walls at a much later stage in the case of heat-treated condition 55 . The above observation is consistent with the fact that pores and intersplat cracks are considerably lower in the heat-treated coating 55 .…”

Section: Some Relevant Corrosion Studies Of Cold Spray Coatings and Cmentioning

confidence: 99%

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Cold gas spray coatings: basic principles corrosion protection and applications

et al. 2017

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ABSTRACT:In this review, the beginnings and evolution of the cold gas spray (CGS) technique are described, followed by the main fundamental aspects of the technique together with a description of the several spraying systems up to date. Sequentially, the main spray parameters and their influence on the properties of the coatings are reported. Afterwards, the most important methodologies for preparing the feedstock powders to be sprayed, the effect of the powder composition, microstructure, particle size and shape on the properties of the coatings are discussed. The nature of the spray gun and nozzle, and the substrate pre-treatments were also discussed. With regard to microstructure and properties, the chemical and physical characterization of the coatings and the performance in protecting the substrates against corrosion together with some mechanical properties are presented and compared. The lacking systematic studies about the great part of investigated systems is the main drawback to compare the published results. Closing this review, the main applications, and the potentialities of the CGS coatings are evidenced.

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Section: Some Relevant Corrosion Studies Of Cold Spray Coatings and Csupporting

confidence: 84%

Section: Some Relevant Corrosion Studies Of Cold Spray Coatings and Cmentioning

confidence: 99%

Section: Some Relevant Corrosion Studies Of Cold Spray Coatings and Cmentioning

confidence: 99%

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Cold gas spray coatings: basic principles corrosion protection and applications

et al. 2017

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“…Ni-based superalloys [195,196] High-temperature applications NiTi [197,198] Shape memory Nanocrystals Steel 316L, 304L [134,[199][200][201] Heat treatment Phase transformation Stellite [202][203][204] Wear resistance Ta [197,198] Oxygen evolution reaction Corrosion protection Ti [205,206] Review Zn, Zn alloys [176,207] Printing rolls Corrosion protection CS is a particularly attractive method for the deposition of metastable materials such as metallic glasses, without dimensional restriction. In this respect, CS may be considered as the only practical method through which bulk metallic glasses of any size may be produced.…”

Section: Metallic Materialsmentioning

confidence: 99%

Cold spraying – A materials perspective

et al. 2016

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Cold spraying is a solid-state powder deposition process with several unique characteristics, allowing production of coatings or bulk components from a wide range of materials. The process has attracted much attention from academia and industry over the past two decades.The technical interest in cold spraying is twofold: first as a coating process for applications in surface technology, and second as a solid-state additive manufacturing process, offering an alternative to selective laser melting or electron beam melting methods. Moreover, cold spraying can be used to study materials behaviour under extremely high strain rates, high pressures and high cooling rates. The cold spraying process is thus considered to be relevant for various industrial applications, as well as for fundamental studies in materials science.This article aims to provide an overview of the cold spray process, the current understanding of the deposition mechanisms, and the related models and experiments, from a materials science perspective. IntroductionCold spraying (CS) is a solid-state material deposition technique, where micron-sized particles of a powder bond to a substrate as a result of high-velocity impact and the associated severe plastic deformation. Acceleration of particles to high velocities is obtained via expansion of a pressurised and (ironically) 'hot' gas through a diverging-converging nozzle.Despite heating the process gas -which is to provide higher acceleration of the gas and also to facilitate particle deformation through thermal softening -the feedstock remains in the solid state throughout the entire process; hence the name 'cold' spraying. This is to underline the contrast to conventional thermal spraying where particles are completely or partially molten upon impact onto the substrate. Alternative terminology includes cold gas spray, micro cold spray, cold gas dynamic spray, kinetic spray, supersonic particle deposition and metal powder application (MPA), all of which refer to the same principle of solid-state powder deposition as described above. CS is used for coating and repair. It is also used for additive manufacturing (AM) at relatively high deposition rates as compared to the methods based on selective laser or electron beam melting. The main advantage of CS is that it alleviates the problems associated with high temperature processing of materials, such as oxidation and unfavourable structural changes. It is possibly the only continuous method to produce bulk components of metastable materials that are available only in the powder form, e.g. as obtained from mechanical attrition or gas atomisation. The aim of the present paper is to provide an overview of CS from a materials perspective, particularly for a broader audience in materials research, e.g. with interest in dynamic phenomena, plasticity and phase transformations. In terms of application and properties, CS is perhaps best to be compared to thermal spraying processes, as in [24,25]. In view of relevant physical phenomena, however, CS is mos...

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“…Therefore, it is of great significance to effectively protect metal materials in the marine environment. The research on marine metal materials has also received extensive attention from scholars [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Anticorrosion Properties of Zn–Al Composite Coating Prepared by Cold Spraying

Wang

Xiong

et al. 2019

Coatings

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In order to slow down the corrosion and wear of offshore equipment, the Zn–Al composite coating was prepared on Q345 substrate by cold spray technique. The mass fraction of Zn and Al in the raw material was 2:3. The microstructure of the original coating was observed by scanning electron microscopy (SEM) and was characterized by energy dispersive spectrometer (EDS). From the composite alloy coating obtained by cold spraying, it was observed that the Zn and Al particles were uniformly distributed without oxidation product, and the powder particles were significantly plastically deformed. The microstructure of the composite coating is very dense and has strong adhesion to the substrate. Neutral salt spray test (NSS) and electrochemical accelerated corrosion test results showed that Zn–Al composite coating can effectively provide corrosion protection.

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The Corrosion Behavior of Cold Sprayed Zinc Coatings on Mild Steel Substrate

Cited by 94 publications

References 37 publications

Cold gas spray coatings: basic principles corrosion protection and applications

Cold gas spray coatings: basic principles corrosion protection and applications

Cold spraying – A materials perspective

Anticorrosion Properties of Zn–Al Composite Coating Prepared by Cold Spraying

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