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Title: Effect of heat treatment on the corrosion behaviour of amorphous Mg-18 at% Ni alloy
Authors: Ong, M.S.
Li, Y. 
Blackwood, D.J. 
Ng, S.C. 
Kam, C.H.
Keywords: Amorphous
Heat treatment
Hydrogen Evolution Testing
Mg-Ni alloy
Issue Date: 2-Oct-1998
Citation: Ong, M.S.,Li, Y.,Blackwood, D.J.,Ng, S.C.,Kam, C.H. (1998-10-02). Effect of heat treatment on the corrosion behaviour of amorphous Mg-18 at% Ni alloy. Journal of Alloys and Compounds 279 (2) : 252-258. ScholarBank@NUS Repository.
Abstract: The effect of heat treatment on the corrosion resistance of rapidly solidified amorphous Mg82Ni18 ribbons has been studied by hydrogen evolution testing in 3% NaCl solution and potentiodynamic scanning in 0.01 M NaCl solution. The results show that the dissolution rate for the partially crystallised sample obtained after 4 min heat treatment at 160°, was lower in comparison to the fully crystalline or fully amorphous samples. Comparison of the polarisation responses of the samples showed that, for the partially crystallised samples, passivation current density was lower than that of the fully amorphous sample, although passivation behaviour was weaker. With prolonged heat treatment duration, fully crystallised samples exhibited a marked deterioration of corrosion resistance. The corrosion results were discussed and correlated with the progress of crystallisation processes by means of XRD, DSC, TEM and SEM. © 1998 Elsevier Science S.A. All rights reserved.
Source Title: Journal of Alloys and Compounds
ISSN: 09258388
Appears in Collections:Staff Publications

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