Protective diffusion coatings on magnesium alloys: A review of recent developments

Zhong, Cheng; Fan, L.F.; Wu, Yating; Le, Jingjing; Лю, Лэй; He, Min; Zhu, Jiale; Hu, Wenbin

doi:10.1016/j.jallcom.2011.12.124

Cited by 162 publications

(48 citation statements)

References 78 publications

(184 reference statements)

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“…4 alloy (Nd = 0.9%). Because high content of Nd consumed a great deal of Al and generated thick rod-like or clustered Al 11 Nd 3 , causing the segregation of Al [28]. The low content of Al in a-Mg matrix, and the expanding space between b phases as well as the increased corrosion interfacial area of aMg/NaCl solution, together increased the value of apparent corrosion rate constant k.…”

Section: Effect Of Grain Size (D) On the Constant Of Apparent Corrosimentioning

confidence: 99%

Kinetic study on the corrosion behavior of AM60 magnesium alloy with different Nd contents

Zhang

Liu

Zhou

et al. 2015

Journal of Alloys and Compounds

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Section: Effect Of Grain Size (D) On the Constant Of Apparent Corrosimentioning

confidence: 99%

Kinetic study on the corrosion behavior of AM60 magnesium alloy with different Nd contents

Zhang

Liu

Zhou

et al. 2015

Journal of Alloys and Compounds

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“…Nam et al [7] have reported that the corrosion rate of low-alloy steel decreased with increasing tin content, because tin favored partial regeneration of the passive layer, which was rich in Cr, Fe, and Sn elements. The deposition of these elements and compounds drastically inhibited the steel dissolution in H 2 SO 4 solutions [7][8][9]. In addition, it has been reported that combination of tin with other elements, such as Cu and Sb, may improve the corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Alloying Tin on the Corrosion Characteristics of Austenitic Stainless Steel in Sulfuric Acid and Sodium Chloride Solutions

Sun

Liu

et al. 2015

Acta Metall. Sin. (Engl. Lett.)

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The effect of tin on general and pitting corrosion behaviors of the austenitic stainless steel in sulfuric acid and sodium chloride solutions was investigated by potentiostatic critical pitting temperature, cyclic potentiodynamic polarization, electrochemical impedance spectroscopy, and scanning electron microscopy. The results showed that there is an optimal tin addition which is around (0.062-0.1) wt%, and the general corrosion resistance of B316LX with 0.08 wt% tin addition in boiling H 2 SO 4 increased remarkably with a corrosion rate of an order of magnitude lower than that of 316L. Hydrolyzation of tin ions induces more metastable pit occurrence on the material surface. However, the pitting resistance of B316LX increases because tin oxides improve the density and uniformity of the passive film, and hydroxide and oxide of tin inhabit the process of pit growing. The effect of tin on pitting corrosion process is illustrated schematically.

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“…Magnesium and its alloys were extremely susceptible to galvanic corrosion, which can cause severe pitting in the metal resulting in decreased mechanical stability and an unattractive appearance [6]. Surface coating technology is one of the most effective methods to prevent magnesium from degradation [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Coatings can protect a substrate by providing a barrier between the metal and its environment [7]. There are many possible coating technologies available for magnesium and its alloys, such as electrochemical plating, conversion coatings, hydride coating, anodizing, gas-phase deposition process, laser surface alloying/cladding, and organic/polymer coatings [7e9].…”

Section: Introductionmentioning

confidence: 99%

“…But it usually has poor adhesion with substrates due to the loose MgO and/or Mg(OH) 2 film formed on bare Mg alloys [17]. A pretreatment is always recommended before the E-coat is deposited onto Mg alloys to achieve good corrosion resistance and paint adhesion performance, such as chromate conversion coatings [7], silane treatment [18] and phosphating which is currently the most widely used pretreatment for E-coating in industry [19], but the phosphating processes are complicated and harmful to the environment [20].…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of the micro-arc oxidation composite coatings on magnesium alloys

Jiang

Liu

et al. 2014

Journal of Magnesium and Alloys

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The magnesium alloys attract the light-weight manufacture due to its high strength to weight ratio, however the poor corrosion resistance limits the application in automobile industry. The Micro-arc Composite Ceramic (MCC) coatings on AZ91D magnesium alloys were prepared by Micro-arc Oxidation (MAO) and electrophoresis technologies. The microstructure, corrosion resistance, abrasion resistance, stone impact resistance and adhesion of MCC coatings were studied respectively. The cross section morphologies showed that the outer organic coating was filled into the hole on surface of MAO coating, and it acted as a shelter against corrosive products. The copper-accelerated acetic acid salt spray Test, abrasion resistance test, stone impact resistance test, thermal shock resistance test and adhesion test were used to evaluate the protective characterization by the third testing organization which approved by GM. The test results showed the composite coatings meet all the requirements. The MCC coating on Mg presents excellent properties, and it is a promising surface treatment technology on magnesium alloys for production vehicles.

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Protective diffusion coatings on magnesium alloys: A review of recent developments

Cited by 162 publications

References 78 publications

Kinetic study on the corrosion behavior of AM60 magnesium alloy with different Nd contents

Kinetic study on the corrosion behavior of AM60 magnesium alloy with different Nd contents

Effect of Alloying Tin on the Corrosion Characteristics of Austenitic Stainless Steel in Sulfuric Acid and Sodium Chloride Solutions

Preparation and characterization of the micro-arc oxidation composite coatings on magnesium alloys

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