PHASE STRUCTURE OF Fe-Co-Ni NANOSYSTEMS: TEMPERATURE EFFECT

Abstract

The processes occurring in biphase powders of Fe – Co – Ni at heating in vacuum are studied in the paper. Samples are synthesized by hydrazinehydrate reduction of metal salts in aqua solutions at highly alkaline medium. When drawing phase diagrams of the nanostructured systems some questions related to the deviation of the diagram from literature data were to be solved. It is suggested that a significant expansion of biphase region is due to the nanodimension.

Keywords

• nanopowders
• phase structure
• solid solutions
• phase transformation