Corrosion and wear behavior of alumina coatings obtained by various methods

Lampke, Thomas; Meyer, D.; Alisch, G.; Wielage, B.; Pokhmurska, H.; Klapkiv, М. D.; Студент, М. М.

doi:10.1007/s11003-011-9328-2

Cited by 32 publications

(11 citation statements)

References 5 publications

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“…[13][14] Accordingly, the typical hardness distribution in the MAO coatings with a peak hardness near the substrate-coating interface followed by gradual decrease in hardness towards the coating surface has been reported by a large number of researchers. [12,[15][16][17][18][19][20][21][22][23] Therefore, the tribological performance as evaluated under diverse wear modes such as abrasion, erosion and sliding demonstrate the exceptional performance of MAO coatings deposited on widely different Al alloys. [24] A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 3 Despite the above understanding, several subsequent research works have only reported a single hardness value for the MAO coating, [7][8][25][26] while in some cases, more meaningfully, it was explicitly mentioned that the hardness value measured corresponds to the internal dense layer alone.…”

Section: Introductionmentioning

confidence: 99%

The influence of phase gradient within the micro arc oxidation (MAO) coatings on mechanical and tribological behaviors

Krishna

Gupta

Sundararajan

2015

Surface and Coatings Technology

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Section: Introductionmentioning

confidence: 99%

The influence of phase gradient within the micro arc oxidation (MAO) coatings on mechanical and tribological behaviors

Krishna

Gupta

Sundararajan

2015

Surface and Coatings Technology

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“…Alumina ceramic can retain up to 90% of their strength even at 1100 • C. Because of the excellent properties of alumina ceramics, they are widely used in many refractory materials, grinding media, cutting tools, high temperature bearings, a wide variety of mechanical parts, and critical components in chemical process environments, where materials are subjected to aggressive chemical attack, increasingly higher temperatures and pressures [4]. It is reported that the corrosion resistance of alumina coatings is higher than that of cermet and metallic coatings [5]. Thermally sprayed Al 2 O 3 is widely employed to protect components against sliding, abrasive and erosive wear in a number of applications including rolls, pump bodies and plungers, industrial machinery parts (such as packaging and food processing equipment), etc.…”

Section: Introductionmentioning

confidence: 99%

Corrosion performance of atmospheric plasma sprayed alumina coatings on AZ31B magnesium alloy under immersion environment

Thirumalaikumarasamy¹,

Shanmugam

Balasubramanian

2014

Journal of Asian Ceramic Societies

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a b s t r a c tPlasma sprayed ceramic coatings are successfully used in many industrial applications, where high wear and corrosion resistance with thermal insulation are required. The alumina powders were plasma sprayed on AZ31B magnesium alloy with three different plasma spraying parameters. In the present work, the influence of plasma spray parameters on the corrosion behavior of the coatings was investigated. The corrosion behavior of the coated samples was evaluated by immersion corrosion test in 3.5 wt% NaCl solution. Empirical relationship was established to predict the corrosion rate of plasma sprayed alumina coatings by incorporating process parameters. The experiments were conducted based on a three factor, five-level, central composite rotatable design matrix. The developed relationship can be effectively used to predict the corrosion rate of alumina coatings at 95% confidence level. The results indicate that the input power has the greatest influence on corrosion rate, followed by stand-off distance and powder feed rate.

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“…Among them, atmospheric plasma spraying (APS) has been most commercially used on Mg and Mg alloys. By the APS process a relatively thick, dense and hard oxide coating can be produced on the surface of magnesium alloys to improve their corrosion resistance remarkably [17].…”

Section: Introductionmentioning

confidence: 99%

Influence of chloride ion concentration on immersion corrosion behaviour of plasma sprayed alumina coatings on AZ31B magnesium alloy

Thirumalaikumarasamy

Shanmugam

Balasubramanian

2014

Journal of Magnesium and Alloys

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Corrosion attack of aluminium and magnesium based alloys is a major issue worldwide. The corrosion degradation of an uncoated and atmospheric plasma sprayed alumina (APS) coatings on AZ31B magnesium alloy was investigated using immersion corrosion test in NaCl solutions of different chloride ion concentrations viz., 0.01 M, 0.2 M, 0.6 M and 1 M. The corroded surface was characterized by an optical microscope and X-ray diffraction. The results showed that the corrosion deterioration of uncoated and coated samples were significantly influenced by chloride ion concentration. The uncoated magnesium and alumina coatings were found to offer a superior corrosion resistance in lower chloride ion concentration NaCl solutions (0.01 M and 0.2 M NaCl). On the other hand the coatings and Mg alloy substrate were found to be highly susceptible to localized damage, and could not provide an effective corrosion protection in solutions containing higher chloride concentrations (0.6 M and 1 M). It was found that the corrosion resistance of the ceramic coatings and base metal gets deteriorated with the increase in the chloride concentrations.

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Corrosion and wear behavior of alumina coatings obtained by various methods

Cited by 32 publications

References 5 publications

The influence of phase gradient within the micro arc oxidation (MAO) coatings on mechanical and tribological behaviors

The influence of phase gradient within the micro arc oxidation (MAO) coatings on mechanical and tribological behaviors

Corrosion performance of atmospheric plasma sprayed alumina coatings on AZ31B magnesium alloy under immersion environment

Influence of chloride ion concentration on immersion corrosion behaviour of plasma sprayed alumina coatings on AZ31B magnesium alloy

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