E. Ivanov, K. Suzuki
The synthesis of new metastable transition metal alloys through mechanical alloying (MA) and chemical leaching is investigated, focusing on the leaching of aluminum atoms from B2 structures of Ni and Co aluminides. This innovative approach results in the formation of metastable B2 Ni and Co, where B2 Ni, identified as a strong paramagnet, is noted to be unstable above 470 K. Additionally, the magnetic moment of Co in the ferromagnetic B2 phase is found to be smaller than that in the face-centered cubic (fcc) structure. Furthermore, the study highlights B2 Ni's remarkable catalytic activity in the hydrogenation of organic compounds. The motivation for this research stems from the rising interest in nanocrystalline materials, which are characterized by size-sensitive structural and property variations. By leveraging MA combined with a technology of topotactic reactions, the synthesis of new materials with unconventional structures is shown to be feasible. Through the topotactic transformation of mechanically alloyed Ni35Al65 and Co40Al160 of the B2 type into metastable nanocrystalline forms, significant advancements in the production and characterization of novel alloys with unique properties are achieved.
@article{701fe92f-e980-4fdb-830d-f813c2a6e296,
title={Formation of new metastable transition metal alloys by combination of mechanical alloying and chemical leaching},
author={E. Ivanov and K. Suzuki},
year={1992},
language={en}
}TY - JOUR TI - Formation of new metastable transition metal alloys by combination of mechanical alloying and chemical leaching AU - E. Ivanov AU - K. Suzuki PY - 1992 LA - en ER -
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