The influence of heat treatment on the corrosion behaviour of as-spun amorphous Al88Ni6La6 alloy in 0.01 M NaCl solution
Data(s) |
01/04/2007
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Resumo |
The effect of the heat treatment on the corrosion behaviour of amorphous Al<sub>88</sub>Ni<sub>6</sub>La<sub>6</sub> made by melt-spun has been investigated by electrochemical measurements. Heat treatment was carried out at 523 K and 673 K for 4 min and 15 min respectively. The evolution of the crystallization process after annealing was identified by differential scanning calorimeter (DSC) as well as X-ray diffraction. The XRD patterns show that the structure of samples heat-treated at higher temperature changes towards a crystal state. The results obtained from the polarization curves reveal that all Al<sub>88</sub>Ni<sub>6</sub>La<sub>6</sub> alloys exhibit spontaneously passivated behaviour. Furthermore, it is noted that the partially crystallized alloy has the best corrosion resistance in comparison with as-spun amorphous and fully crystallized alloys, while the fully crystallized sample shows deterioration in the corrosion resistance.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Elsevier BV |
Relação |
http://dx.doi.org/10.1016/j.matlet.2006.07.186 |
Direitos |
2006, Elsevier B.V. |
Palavras-Chave | #al alloys #amorphous #corrosion #heat treatment #polarization |
Tipo |
Journal Article |