Abstract
The influence of the elaboration route of Mg2Co1-xMx (M = Fe or Ni and x≤0.3) hydrogen storage alloy was investigated. When Co was replaced by Fe, the formation of `Mg2Co' (containing a very small amount of Fe) was observed after about 60 h of ball milling, but the yield of formation was lower. Increasing milling time just led to an amorphization of the `Mg2Co' compound. We also observed, that as expected, no new compound was formed between Mg and Fe. Annealing of unmilled products did not lead to any new compounds and annealing of milled products just led to the crystallization of the existing compounds. When cobalt was replaced by nickel, the major difference was the formation, after annealing, of the Mg2Ni compound. This difference is attributed to the higher stability of Mg2Ni compared to that of `Mg2Co'. The yield of the `Mg2Co' phase was higher than that with Fe and that without any adding element.
| Original language | English |
|---|---|
| Pages (from-to) | 192-198 |
| Number of pages | 7 |
| Journal | Journal of Alloys and Compounds |
| Volume | 297 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Feb 2 2000 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
Cite this
Effect of substitution of Fe and Ni for Co in the synthesis of Mg2Co compound using the mechanical alloying method. / Bobet, Jean Louis; Akiba, Etsuo; Darriet, B.
In: Journal of Alloys and Compounds, Vol. 297, No. 1-2, 02.02.2000, p. 192-198.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effect of substitution of Fe and Ni for Co in the synthesis of Mg2Co compound using the mechanical alloying method
AU - Bobet, Jean Louis
AU - Akiba, Etsuo
AU - Darriet, B.
PY - 2000/2/2
Y1 - 2000/2/2
N2 - The influence of the elaboration route of Mg2Co1-xMx (M = Fe or Ni and x≤0.3) hydrogen storage alloy was investigated. When Co was replaced by Fe, the formation of `Mg2Co' (containing a very small amount of Fe) was observed after about 60 h of ball milling, but the yield of formation was lower. Increasing milling time just led to an amorphization of the `Mg2Co' compound. We also observed, that as expected, no new compound was formed between Mg and Fe. Annealing of unmilled products did not lead to any new compounds and annealing of milled products just led to the crystallization of the existing compounds. When cobalt was replaced by nickel, the major difference was the formation, after annealing, of the Mg2Ni compound. This difference is attributed to the higher stability of Mg2Ni compared to that of `Mg2Co'. The yield of the `Mg2Co' phase was higher than that with Fe and that without any adding element.
AB - The influence of the elaboration route of Mg2Co1-xMx (M = Fe or Ni and x≤0.3) hydrogen storage alloy was investigated. When Co was replaced by Fe, the formation of `Mg2Co' (containing a very small amount of Fe) was observed after about 60 h of ball milling, but the yield of formation was lower. Increasing milling time just led to an amorphization of the `Mg2Co' compound. We also observed, that as expected, no new compound was formed between Mg and Fe. Annealing of unmilled products did not lead to any new compounds and annealing of milled products just led to the crystallization of the existing compounds. When cobalt was replaced by nickel, the major difference was the formation, after annealing, of the Mg2Ni compound. This difference is attributed to the higher stability of Mg2Ni compared to that of `Mg2Co'. The yield of the `Mg2Co' phase was higher than that with Fe and that without any adding element.
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U2 - 10.1016/S0925-8388(99)00552-6
DO - 10.1016/S0925-8388(99)00552-6
M3 - Article
AN - SCOPUS:0033891033
VL - 297
SP - 192
EP - 198
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - 1-2
ER -