Corrosion Protection of Light Alloys using Low Pressure Cold Spray

Dzhurinskiy, D.; Maev, Roman Gr.; Leshchynsky, Volf

doi:10.1007/978-3-319-48761-8_57

Cited by 2 publications

(2 citation statements)

References 40 publications

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“…The shifting of potential may be due to the coating surface's connected porosity, which makes the steel as cathode and gives a mixed potential value. For the initial exposure of the coating in the solution, it activates the surface due to the presence of activating agents such as chloride and carbonates in the solution, while more defects or active sites on the coating surface enhances the dissolution [35]. At the time of exposure, it was passivating the surface, but not actively.…”

Section: Potential-time Studies Of Al Coating In Sae J2334 Solutionmentioning

confidence: 99%

Corrosion Resistance Properties of Aluminum Coating Applied by Arc Thermal Metal Spray in SAE J2334 Solution with Exposure Periods

Lee

Singh

Ismail

et al. 2016

Metals

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Arc thermal metal spray coating provides excellent corrosion, erosion and wear resistance to steel substrates. This paper incorporates some results of aluminum coating applied by this method on plain carbon steel. Thereafter, coated panels were exposed to an environment known to form stable corrosion products with aluminum. The coated panels were immersed in Society of Automotive Engineers (SAE) J2334 for different periods of time. This solution consists of an aqueous solution of NaCl, CaCl 2 and NaHCO 3 . Various electrochemical techniques, i.e., corrosion potential-time, electrochemical impedance spectroscopy (EIS) and the potentiodynamic were used to determine the performance of stimulants in improving the properties of the coating. EIS studies revealed the kinetics and mechanism of corrosion and potentiodynamic attributed the formation of a passive film, which stifles the penetration of aggressive ions towards the substrate. The corrosion products that formed on the coating surface, identified using Raman spectroscopy, were Dawsonite (NaAlCO 3 (OH) 2 ) and Al(OH) 3 . These compounds of aluminum are very sparingly soluble in aqueous solution and protect the substrate from pitting and uniform corrosion. The morphology and composition of corrosion products determined by scanning electron microscopy and energy dispersive X-ray analyses indicated that the environment plays a decisive role in improving the corrosion resistance of aluminum coating.

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Section: Potential-time Studies Of Al Coating In Sae J2334 Solutionmentioning

confidence: 99%

Corrosion Resistance Properties of Aluminum Coating Applied by Arc Thermal Metal Spray in SAE J2334 Solution with Exposure Periods

Lee

Singh

Ismail

et al. 2016

Metals

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“…This induces intimate bonding assisted by adiabatic shear instability at the particle-particle and particle-substrate interface . Such characteristic of kinetic spray process, using kinetic energy rather than thermal energy for the particle deposition, provides specific properties to the resultant coating layer (Ref 3,(14)(15)(16)(17)(18)(19)(20)(21)(22)(23). Accordingly, kinetic spray process has been applied to various industrial fields such as automotive, aviation, defense, energy, etc.…”

Section: Introductionmentioning

confidence: 99%

Microstructure of Kinetic Spray Coatings: A Review

2015

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Kinetic spray process has been applied to various industrial fields such as automotive, aviation, and defense industries due to its availability to produce high-performing coating layer. However, since the properties of kinetic-sprayed coating layer are significantly affected by the microstructures of deposit, the microstructures of the deposit should be controlled to acquire advanced coating layer and, accordingly, deep understanding of microstructural evolution must be achieved before controlling the microstructure of the coating layer. This paper gives an overview of contents related to the microstructure of kineticsprayed deposition. The most powerful influencing factors in microstructural evolution of kinetic-sprayed coating layer are instant generation of thermal energy and high-strain, high-strain-rate plastic deformation at the moment of particle impact. A high-density coating layer with low porosity can be produced, although some micro-cracks are occasionally induced at the interparticle boundary or at the inner region of the particles. Also, a microstructure which is distinct from the inner particle region is created in the vicinity of the particle-particle or particle-substrate interface region. However, almost no crystal phase transformation or chemical reaction is induced since the deposited particles are not heated directly by a thermal energy source.

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Corrosion Protection of Light Alloys using Low Pressure Cold Spray

Cited by 2 publications

References 40 publications

Corrosion Resistance Properties of Aluminum Coating Applied by Arc Thermal Metal Spray in SAE J2334 Solution with Exposure Periods

Corrosion Resistance Properties of Aluminum Coating Applied by Arc Thermal Metal Spray in SAE J2334 Solution with Exposure Periods

Microstructure of Kinetic Spray Coatings: A Review

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