Abstract
Evolution of phases during high-energy ball-milling of elemental powders of Nb and Si of composition Nb—16 at.% Si were studied as a function of milling time and milling power. Powders obtained were characterized by X-ray diffraction and calorimetry. Milling can result either in NbSi supersaturated solidsolution or in a very fine partially amorphized mixture. Further milling of the amorphous mixture can result in mechanical crystallization and transformation that leads to formation of Nb, and Nb 5Si 3 and Nb 3Si intermetallic compounds.
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