By Guang-Ling Song
Magnesium (Mg) alloys are receiving expanding cognizance as a result of their abundance, mild weight, castability, formability, mechanical homes and corrosion functionality. through choosing the ideal blend of fabrics, coatings and floor ameliorations, their corrosion resistance should be tremendously more desirable. Corrosion prevention of magnesium alloys is a finished advisor to the potent prevention of corrosion in those very important gentle metals.
Part one discusses alloying, inhibition and prevention concepts for magnesium alloys in addition to corrosion and prevention ideas. half reports floor remedy and conversion. starting with an outline of floor cleansing and pre-conditioning, the publication is going directly to talk about using floor processing and alloying, laser remedies, chemical conversion and electrochemical anodization to enhance the corrosion resistance of magnesium alloys. Coatings are then the focal point of half 3, together with diverse plating innovations, chilly spray coatings, gel and electroless electrophoresis coatings. eventually, the ebook concludes partly 4 with a range of case reports investigating the applying of preventative recommendations for either automobile and scientific applications.
With its special editor and overseas group of professional participants, Corrosion prevention of magnesium alloys is a key reference instrument for all these operating with magnesium and its alloys, together with scientists, engineers, metallurgists, aerospace and automobile execs, and teachers drawn to this box.
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Extra resources for Corrosion Prevention of Magnesium Alloys
G. J. Bard (ed), ‘Encyclopedia of Electrochemistry of the Elements’, Marcel Dekker, New York, pp 263–319. J. (1992), ‘Physical Metallurgy of Magnesium Alloys’, DGM Informationsgesellschaft, Oberursel, Germany, p 201. J. (1996), ‘Metallurgy of Light Alloys’, Halsted Press, NY, p. 362. W. A. S. A. S. (1960), ‘Magnesium alloy systems’ in ‘Magnesium and Its Alloys’, John Wiley & Sons, pp 42–80. , Froidewaux H. and Landolt D. (1980), Journal of the Electrochemical Society, 127:1096. , Gugau M. and Berger C.
Therefore, the addition of Y in the Mg-Al alloy will not only lead to low Y content but also consume Al. 3 Mg-Zn-Y alloys Two Mg-Zn-Y phases exist in the Mg-Zn-Y alloys, that is W-phase (Mg3Zn3Y2) and I-phase (Mg3Zn6Y). 12,13 In the heat extrusion process, the secondary phases did not dissolve solute completely in the Mg matrix. On the contrary, the secondary phases are transformed into nanoparticles in the Mg matrix by the severe plastic deformation. One study14 suggests that the W-phase has a high melting point and therefore the plasticity of the alloy has been reduced in the heat distortion process.
N. ), TMS 2011, San Diego, March, 2011, pp 611–615. Yim C. K. (2001), Effect of Heat treatment on Corrosion Behaviour of an AZ91HP Magnesium Alloy, in Proceedings of the 12th Asia Pacific Corrosion Control Conference 2001, Seoul, 2:1306–1306–7. Zamin M. (1981), Corrosion, 37(11):627. , Song G. and Atrens A. (2008a), ‘Influence of Homogenization Annealing of AZ91 on Mechanical Properties and Corrosion Behavior’, Advanced Engineering Materials, 10(1–2)93–103. , Song G. and Atrens A. (2008b), ‘Influence of pH and Chloride ion concentration on the corrosion of Mg alloy ZE41’, Corrosion Science, Advanced Engineering Materials 10(1–2):104–111.
Corrosion Prevention of Magnesium Alloys by Guang-Ling Song