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چکیده
By combination of structural and elemental characterizations, the corrosion products are evidenced. We observe the formation of platelets and needles, with a better morphological definition in the case of Mg-containing samples. The needles are associated to La(OH)3 and possess nanometric inner hollow channels. The platelets are made of Ni(OH)2 for pure La2Ni7. When Mg is present, we demonstrate that Ni and Mg combine in a pseudobinary hydroxide Mg1-xNix(OH)2. It is concluded that substitution by Mg modifies the corrosion product and morphology, but does not speed up the calendar corrosion process.
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