Rare earths based AB 5 type alloys (represented as AB 5) not only have a good activation behavior and high rate discharge ability, but also catalyse the hydriding and dehydriding. A kind of composite alloy with AB 5 and Zr 0.9 Ti 0.1 (Mn 0.35 Ni 0.65 ) 2 Laves phase alloy (represented as AB 2) was successfully prepared by means of mechanical ball milling.
The Sn-Co alloys with different atom ratio(2∶1, 4∶1,8∶1) were prepared by solid-state reducing reaction through mechanical ball milling. The structure and morphology of the products were characterized by means of powder X-ray diffraction and scanning electron microscopy. the elctrochemical performance of the materials used as lithium intercalation anode was investigated using simulated test cells.
The experimental results show that rare-earth magnesium alloys have high hydrogen absorption capacities and rather good hydriding properties and are promising for hydrogen storage. Mechanical grinding improves the dehydriding properties of La2Mg]6Ni, but deteriorates the activation properties and has no influence on the hydrogen absorption capacity.
The methods of solid state diffusion and mechanical grinding were used to prepare nanoscaled Mg 2Ni system hydrogen storage alloys. Their electrochemical behaviours are advantageous to those of alloys prepared bytraditional methods.
The amorphous Mg-Fe-Ni composites have been synthesized by mechanical ball-milling. The microstructure and electrochemical properties of the composites were characterized by XRD, SEM and electrochemical testing.
The powders prepared by mechanical milling of iron in graphite or heptane were mixtures of phases (nanocrystalline α-Fe + amorphous Fe-C phase (AP), α-Fe + Fe3C, and α-Fe + graphite) in different ratios.
Formation of strontium-doped lanthanum manganite (La0.8Sr0.2MnO3) by mechanical milling without media balls
This paper reports a study of the phase evolution induced by mechanical milling of a mixture of industrial grade La2O3, SrCO3 and Mn3O4 powders under a humid atmosphere.
The present mechanical milling resulted in considerably lower contamination release from milling media.
SnS-P2S5 and SnO-P2O5 amorphous materials were prepared by a mechanical milling technique.