Anti-corrosion microarc oxidation coatings on SiCP/AZ31 magnesium matrix composite

Wang, Xue; Qian, Jin; Zhu, Qiang; Hua, Ming; Ma, Yuanyuan

doi:10.1016/j.jallcom.2009.03.159

Cited by 56 publications

(19 citation statements)

References 21 publications

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“…Mg 2+ +2OH − → Mg(OH) 2 (11) Both the chemical dissolution and electrochemical corrosion will result in the reduction of anodized film thickness, destruction of existing film-defective regions, creation new film-defective regions, electrochemical dissolution of magnesium substrate, etc. Therefore, the defects in the anodized film have negative impacts on the corrosion protection of magnesium substrate.…”

Section: Ecorr (V)ˇa (Mv)ˇc (Mv)mentioning

confidence: 99%

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Effects of benzotriazole on anodized film formed on AZ31B magnesium alloy in environmental-friendly electrolyte

Guo¹,

Liu²,

Yang³

et al. 2009

Journal of Alloys and Compounds

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Section: Ecorr (V)ˇa (Mv)ˇc (Mv)mentioning

confidence: 99%

“…Anodization is well known and widely employed to produce an anticorrosion film on the surface of metal substrates, such as titanium, aluminum, magnesium and their alloys [4][5][6][7][8][9][10][11]. Unfortunately, several serious problems are pressing for solution.…”

Section: Introductionmentioning

confidence: 99%

Effects of benzotriazole on anodized film formed on AZ31B magnesium alloy in environmental-friendly electrolyte

Guo¹,

Liu²,

Yang³

et al. 2009

Journal of Alloys and Compounds

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“…Coating or oxidizing the reinforcement particles, adding some surface-active elements such as magnesium into the matrix, and stirring of metal matrix alloy for an adequate time period during incorporation are some ways used in the semi-solid stir casting process to aid particle incorporation and chemical bonding with the matrix [5,7,13,[20][21][22][23][24][25][26]. Coating of the reinforcement is a successful technique used to promote wetting of the particles by aluminum through decreasing the surface energy of the solid-liquid (cSl).…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of rolled A356 based composites reinforced by Cu-coated bimodal ceramic particles

et al. 2015

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ab s t r a c tThree kinds of A356 based composites reinforced with 3 wt.% Al2O3 (average particle size: 170 lm), 3 wt.% SiC (average particle size: 15 lm), and 3 wt.% of mixed Al2O3-SiC powders (a novel composite with equal weights of reinforcement) were fabricated in this study via a two-step approach. This first process step was semi-solid stir casting, which was followed by rolling as the second process step. Electroless deposition of a copper coating onto the reinforcement was used to improve the wettability of the ceramic particles by the molten A356 alloy. From microstructural characterization, it was found that coarse alumina particles were most effective as obstacles for grain growth during solidification. The rolling process broke the otherwise present fine silicon platelets, which were mostly present around the Al2O3 particles. The rolling process was also found to cause fracture of silicon particles, improve the distribution of fine SiC particles, and eliminate porosity remaining after the first casting process step. Examination of the mechanical properties of the obtained composites revealed that samples which contained a bimodal ceramic reinforecment of fine SiC and coarse Al2O3 particles had the highest

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“…It shows that the compositions of alloy have a sig-ni¯cant in°uence on the morphology and properties of MAO coatings. [2][3][4][5][6][7][8][9][10] Previous research 11 indicates that microstructure of 2219 aluminum alloy has little in°uence on the growth of MAO coating. However, it is interesting to make clear the e®ect of microstructure on the growth process and properties of MAO coating on magnesium alloy when the alloy has the same composition and di®erent microstructure.…”

Section: Introductionmentioning

confidence: 99%

Influence of Microstructure of Friction Stir Welded Joints on Growth and Properties of Microarc Oxidation Coatings on Az31b Magnesium Alloy

Chen

Wang

et al. 2015

Surf. Rev. Lett.

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Ceramic coatings on friction stir welded (FSW) joints of AZ31B magnesium alloy were fabricated by microarc oxidation (MAO) method in silicate electrolyte. Microstructure, phase constituents, microhardness and electrochemical corrosion behaviors of bare and coated magnesium alloys at di®erent zones of FSW joints for di®erent oxidation time were investigated. The in°uence of microstructure at di®erent zones on the growth of MAO coatings was analyzed. The results show that the MAO coatings on FSW joints are uniform, and they have almost the same morphology, phase constituents, hardness and corrosion resistance at base metal, stir zone and heat-a®ected zone. The properties of MAO coatings are independent on the microstructures of AZ31B alloy. In addition, the microstructures of magnesium alloy near the coating/alloy interface at di®erent zones of FSW joint was not changed by microarc discharge process.

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Anti-corrosion microarc oxidation coatings on SiCP/AZ31 magnesium matrix composite

Cited by 56 publications

References 21 publications

Effects of benzotriazole on anodized film formed on AZ31B magnesium alloy in environmental-friendly electrolyte

Effects of benzotriazole on anodized film formed on AZ31B magnesium alloy in environmental-friendly electrolyte

Mechanical properties of rolled A356 based composites reinforced by Cu-coated bimodal ceramic particles

Influence of Microstructure of Friction Stir Welded Joints on Growth and Properties of Microarc Oxidation Coatings on Az31b Magnesium Alloy

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