Effect of additive Al 2 O 3 powders on micro-arc oxide coating of magnesium alloy
Source abstract
Abstract
Abstract In order to understand the effect of additive Al 2 O 3 powders on the film corrosion resistance and the microstructure of the micro-arc oxide (MAO) ceramic film of magnesium alloy, AZ91D die cast magnesium alloy was oxidized with a special micro-arc apparatus. Morphological characteristics and phase constituent of ceramic coatings were analyzed by scanning electron microscope (SEM) and X-ray diffraction (XRD). And the aluminum (Al) element of before and after the Al 2 O 3 accession were analyzed by energy-dispersive X-ray (EDX). The results showed that after adding Al 2 O 3 powders, pores on ceramic coatings decreased, the loose layer became more compact, the new phase of Al 2 O 3 appeared, and the Al element of the ceramic membrane increased. Ultrasonic waves promoted the content of Al 2 O 3 in the layer. Electrochemical corrosion experiments in 3.5% NaCl solution showed that the corrosion resistance of ceramic coatings after adding Al 2 O 3 powders was improved greatly.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Aluminum Alloys Composites Properties · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang, China
References (10)
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1. Butyagin PI, Khokhryakov YeV, Mamaev AI. J Mater. Lett. 2003, 57, 1748–1751.10.1016/S0167-577X(02)01062-510.1016/S0167-577X(02)01062-5 ↗
2. Gray JE, Luan B. J Alloy Compd. 2002, 336, 88–113.10.1016/S0925-8388(01)01899-010.1016/S0925-8388(01)01899-0 ↗
3. Yoshihara M, Kim YW. Intermetallics, 2005, 13, 952–958.10.1016/j.intermet.2004.12.00710.1016/j.intermet.2004.12.007 ↗
4. Liu Y-P, Duan L-H, Ma S-X, Pan J-D, Cui C-E, Miao L. J Chinese Corros Protect, 2007, 27, 4, 202–205.
5. Nie X, Meletis EI, Jiang JC, Leyland A, Yerokhin AL, Matthews A. Surf. Coat. Tech. 2002, 149, 245–251.10.1016/S0257-8972(01)01453-010.1016/S0257-8972(01)01453-0 ↗
6. Rama Krishna L, Sudha Purnima A, Sundararajan G. Wear 2006, 261, 1095–1101.10.1016/j.wear.2006.02.00210.1016/j.wear.2006.02.002 ↗
7. Braun R, Frohlich M, Braue W, Leyens C. Surf. Coat. Tech. 2007, 202, 676–680.10.1016/j.surfcoat.2007.06.05410.1016/j.surfcoat.2007.06.054 ↗
8. Wangqiu Z, Dayong S, En-Hou H, Wei K. Corros. Sci. 2008, 50, 329–337.
9. Ya-Ping L. Magnesium alloy micro-arc oxidation ceramic coating microstructure and properties of, PhD thesis, Taiyuan University of Technology, 2006.
10. Patcas F, Krysmann W. Appl. Catal. A 2007, 316, 240–249.10.1016/j.apcata.2006.09.02810.1016/j.apcata.2006.09.028 ↗