Magnesium alloys corrosion behaviour

Bonora P L, Andrei M, Eliezer A and Gutman E M (2002), Corrosion behaviour of stressed magnesium alloys . Corrosion Science, 44, 729-749. 

W Zhou, NN Aug, Y Sun, Effect of antimony, bismuth and calcium addition on corrosion and electrochemical behaviour of AZ91 magnesium alloy. Corrosion Science, 2009, 51, 403 08. 

PB Srinivasan, C Blawert, W Dietzel, Effect of plasma electrolytic oxidation coating on the corrosion and stress corrosion cracking behaviour of wrought AZ61 magnesium alloy. Corrosion Science, 2008, 50, 2415-2418. 

R. Ambat, N.N. Aung and W. Zhou, Evaluation of microstructural effects on corrosion behaviour of AZ91D magnesium alloy . Corrosion Science, 42, (2000), 1433-1455. 

Galicia, G., N. Pebere, B. Tribollet, and V. Vivier, Local and global electrochemical impedances apphed to the corrosion behaviour of an AZ91 magnesium alloy. Corrosion Science, 51, 2009, 1789. 

In considering the corrosion behaviour of magnesium alloys, therefore, it is of the utmost importance to know the nature of the medium to which the metal is to be exposed. In general, atmospheric attack in damp conditions is largely superficial aqueous solutions bring about attack which varies not only with the solute but with the volume, movement and temperature... 

In considering the corrosion of magnesium and its alloys it is important to examine the methods available for assessing corrosion tendencies and particularly those known as accelerated tests. Tests carried out by immersion in salt water or by spraying specimens regularly with sea-water are worthless as a means of determining the resistance of magnesium alloys under any other than the particular test conditions. Extrapolation to less corrosive conditions is not valid and even the assessment of the value of protective measures by such means is hardly possible. The reason is to be found in the fact that corrosion behaviour is directly related to the formation of insoluble... 

The Effect of Surface Finishing on the Corrosion Behaviour of Magnesium Alloys... 

Shkurankov A, El Abedin SZ, Endres F (2007) AFM-assisted investigation of the corrosion behaviour of magnesium and AZ91 alloys in an ionic liquid with varying water content. Aust J Chem 60(1) 35 2. doi 10.1071/ch06305... 

In recent decades many researchers have performed much work on the corrosion of magnesium alloys. They have studied the corrosion phenomena, the factors influencing corrosivity and the practical applications of magnesium alloys. They have also systematically studied different corrosion cases, compared the corrosion behaviours of different alloys in different environments, proposed some practical designs to avoid serious corrosion, and sununarized various effects of environmental and metallurgical factors on the corrosivity of magnesium alloys. There have, however, been very few mechanistic studies and some fundamental questions remain unanswered. These fundamental problems have potential... 

Song G.-L., Atrens A. (1998), Corrosion behaviour of skin layer and interior of diecast AZ91D , International Conference on Magnesium Alloys and their Applications, Wolfsburg, pp 415-419. 

Amira S, Lafront A-M, Dube D, Tremblay R and Ghali E (2007), Corrosion behaviour of die-cast and thixocast AXJ530 magnesium alloy in chloride medium . Advanced Engineering Materials, 9(11), 973-980. 

Chen J, Wang J, Han E, Dong J and Ke W (2007), AC impedance spectroscopy study of the corrosion behaviour of an AZ91 magnesium alloy in O.IM sodium sulphate solution , Electrochimica Acta, 52, 3299-3309. 

Hawke D L, Hillis J, Pekguleryuz M and Nakatsugawa I (1999), Corrosion behaviour , in Magnesium and Magnesium Alloys, Avedesian M M and Baker H, ed. Materials Park, OH, ASM International, 194—210. 

Abstract This chapter deals with the corrosion performance of innovative or unconventional magnesium (Mg) alloys. It considers, on the one hand, all Mg alloys that have an unusual microstructure and/or composition mostly as a result of extreme processing conditions and, on the other hand, the innovative concepts that are used to improve the corrosion performance of conventional alloys. The available literature is reviewed and the specific influences of the microstructure and/or composition on corrosion behaviour is discussed and general possibilities to improve corrosion resistance of these alloys are highlighted. 

Abbas G, Liu Z, Skeldon P (2005), Corrosion behaviour of laser-melted magnesium alloys . Applied Surface Science, 247, 347-353. 

Wang X, Zeng X, Wu G, Yao S, Lai Y, (2007), Effects of tantalum ion implantation on the corrosion behaviour of AZ31 magnesium alloy , Journal of Alloys and Compounds, 437, 87-92. 

The atmospheric corrosion of metals is largely dependent on the electrochemical reactions occurring in the thin aqueous layer on the surface and at the interface between the solid substrate and the thin electrolyte layer. The thin aqueous layer on the surface also acts as a conductive medium which can support electrochemical processes on the surface. Due to the presence of different phases with different electrochemical properties in magnesium alloys the anodic and cathodic reactions are often localised in different areas on the magnesium surface. The microelectrodes may consist of different phases present in the microstructure of the alloys. The influence of the microstructure on the atmospheric corrosion behaviour of magnesium alloys will be discussed in more detail further on. In atmospheric corrosion the thin electrolyte reduces... 

J Chen, M Ai, J Wang, E Han, W Ke, Stress corrosion cracking behaviours of AZ91 magnesium alloy in deicer solution using constant load. Materials Science and Engineering, 2009, A515, 79-84. 

PB Srinivasan, S Riekehr, C Blawert, W Dietzel, M Kocak, Slow strain rate stress corrosion cracking behaviour of as-welded and plasma electrolytic oxidation treated AZ31HP magnesium alloy autogenous laser beam weldment. Materials Science... 

Magnesium alloys should have a similar corrosion behaviour to that of pure magnesium in an ethylene glycol solution. This has been eonfirmed by Fekry and Fatayerji s systematic study [30], which is briefly deseribed as follows. 

Although the corrosion of pure magnesium in commercial coolants has been reported [9,31], in practice, an engine block cannot be made of pure magnesium, and the coolant cannot be pure ethylene glycol solution only. Therefore, it is important to understand the corrosion behaviour of magnesium alloys in commercial coolants. 

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