Influences of Mechanical, Corrosion, erosion and tribological performance of cold sprayed Coatings A review

Mohankumar, Ashokkumar; Thirumalaikumarasamy, D.; Thirumal, P.; Rajendran, Barathiraja

doi:10.1016/j.matpr.2021.01.664

Cited by 21 publications

(12 citation statements)

References 44 publications

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“…Cold spraying is a new surface technology, developed based on the aerodynamics principle of the alloy. A gas (air, nitrogen, helium, and argon as the accelerating medium) is heated and pressurized to produce supersonic airflow (300–1200 m/s), which drives the spraying powder to accelerate to a supersonic state in the solid state, thus dragging metal particles to impact the substrate, causing strong plastic deformation, and depositing on the surface of the substrate to form a coating [ 24 ]. As an emerging surface technology, high-pressure cold-spraying technology relies on high speed rather than high temperature, which can effectively avoid problems such as coating oxidation, phase transformation, and poor crystallization that are caused by high temperature.…”

Section: Preparation and Properties Of Ha Coatingmentioning

confidence: 99%

Recent Advances on Development of Hydroxyapatite Coating on Biodegradable Magnesium Alloys: A Review

et al. 2021

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The wide application of magnesium alloys as biodegradable implant materials is limited because of their fast degradation rate. Hydroxyapatite (HA) coating can reduce the degradation rate of Mg alloys and improve the biological activity of Mg alloys, and has the ability of bone induction and bone conduction. The preparation of HA coating on the surface of degradable Mg alloys can improve the existing problems, to a certain extent. This paper reviewed different preparation methods of HA coatings on biodegradable Mg alloys, and their effects on magnesium alloys’ degradation, biocompatibility, and osteogenic properties. However, no coating prepared can meet the above requirements. There was a lack of systematic research on the degradation of coating samples in vivo, and the osteogenic performance. Therefore, future research can focus on combining existing coating preparation technology and complementary advantages to develop new coating preparation techniques, to obtain more balanced coatings. Second, further study on the metabolic mechanism of HA-coated Mg alloys in vivo can help to predict its degradation behavior, and finally achieve controllable degradation, and further promote the study of the osteogenic effect of HA-coated Mg alloys in vivo.

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Section: Preparation and Properties Of Ha Coatingmentioning

confidence: 99%

Recent Advances on Development of Hydroxyapatite Coating on Biodegradable Magnesium Alloys: A Review

et al. 2021

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“…When the level of micro cracks and porosity in the sprayed coating is minimised, the hardness of the coating increases. The following regression equation is governed by the nature of the graph: Microhardness (HV) = 1498.9 − 222.75 (Porosity in vol%) (6) The negative nature of the slope of the regression equation specifies that porosity and microhardness show an inverse relationship.…”

Section: Affiliation Between Porosity and Hardnessmentioning

confidence: 99%

“…Thermal spray types such as high-velocity oxy-fuel (HVOF), atmospheric plasma spraying (APS) processes and cold spraying are now adopted by industries for developing coatings to battle against varied forms of surface degradation problems. Nowadays, more and more researchers are paying attention to developing protective coatings for different systems to protect electrical equipment and to recover the operating capacity of the contact after its failure [1][2][3][4][5][6][7]. high-velocity oxy-fuel (HVOF) cermet coatings are broadly used in tribological applications, highlighting sliding conditions as the best substitute for hard chrome plating.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of HVOF Spray Process Parameters to Achieve Minimum Porosity and Maximum Hardness in WC-10Ni-5Cr Coatings

et al. 2022

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High-velocity oxy-fuel (HVOF) spray coating plays a major role in many surface treatment methods, which tend to improve erosion and corrosion resistance properties. HVOF is well known for its dense and high-quality coating ability. This is due to the less in-flight exposure time, which tends to have less oxide content because of its high-velocity properties. Among the number of process parameters, porosity and hardness are predominant factors while considering wear rate and corrosion behaviour analysis. The current study aims to optimise HVOF process parameters to obtain low levels of porosity and high hardness values in the WC-10Ni-5Cr coating sprayed on 35 Mo Cr steel. The flow rates of oxygen, LPG, coating powder feed rate and spray distance are selected in this study as these have a superior influence on the final condition of the coating. Statistical tools such as the design of experiments (DoE), analysis of variants and response surface methodology (RSM) were used to achieve the desired results. As per the result analysis, the oxygen flow rate has a higher effect on the porosity value and microhardness value of the coating.

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“…Additionally, following a current flow, the potential differentiation among the two electrodes [8] is recovered to its prebreakdown state, allowing for another liquid dielectric breakdown. Wire EDM is used in various manufacturing industrial applications: soft armors shaping, hybrid composite, and mainly in the coating industries (thermal spray processes) for cutting the base materials into the desired shape [9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Optimization on Material Removal Rate and Surface Roughness of Stainless Steel 304 Wire Cut EDM by Response Surface Methodology

Seshaiah¹,

Sampathkumar²,

Mathanbabu³

et al. 2022

Advances in Materials Science and Engineering

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In this work, wire cut electrical discharge machining (WEDM) is used for the material removing processes; it is utilized for machining conductive parts where it is required to produce complicated shapes, new profiles, new geometry, new product development, and high-accuracy components. This machining process is best suitable for high-end applications such as aerospace, automations, automobile, and medical devices. At present, most of the industrial sectors choose the WEDM process because it is used to develop products in a very short development cycle and at a better economic rate. In this paper, the selected complex geometry of the metal sample was eroded away from the wire during the WEDM process, which eliminates mechanical tensions during machining. The effect of different WEDM operation variables set as wire speed, wire tension, discharge current, dielectric flow rate, and pulse on and off time on the parameter, stainless steel 304 material removing rate (MRR) using RSM, has been studied. The MRR will be maximized if the optimum sets of operational variations are used and also achieve a superior surface finish.

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Influences of Mechanical, Corrosion, erosion and tribological performance of cold sprayed Coatings A review

Cited by 21 publications

References 44 publications

Recent Advances on Development of Hydroxyapatite Coating on Biodegradable Magnesium Alloys: A Review

Recent Advances on Development of Hydroxyapatite Coating on Biodegradable Magnesium Alloys: A Review

Optimisation of HVOF Spray Process Parameters to Achieve Minimum Porosity and Maximum Hardness in WC-10Ni-5Cr Coatings

Optimization on Material Removal Rate and Surface Roughness of Stainless Steel 304 Wire Cut EDM by Response Surface Methodology

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