PROJECT SUMMARY

Nanocrystalline/nanostructured magnetic materials have interesting soft magnetic properties in the view of fundamental research and industry applications. The main goal of this project is the obtaining of new nanocrystalline/nanocomposite soft magnetic materials with improved properties which could be used like magnetic cores at medium and high frequencies. The project is structured on two directions: (i) obtaining of nanocrystalline/nanostructured powders and sintered compacts like Permalloy(Supermalloy)/Rhometal type and (ii) obtaining of nanocomposite powders and compacts by combining the high permeability/remanence of Fe, Fe-Ni alloy with high electrical resistivity of ferrite - (Me1Me2)Fe2O4/(Fe-Ni alloy). Two types of nanocomposite powders are envisaged: (i) the nanocomposite particles like “raisin bread” model, obtained by milling of Fe-based alloys (ductile) and ferrite powders (brittle) and (ii) a core-shell type particles obtained by microalloying between the large particles of alloy surrounded by many nanosized ferrite particles. The nanocomposite/nanostructured powders will be compacted by spark plasma sintering to preserve the phases composition and nanocrystalline state. The proposed research aims to optimize the microstructure influence on the magnetic coupling and electrical resistivity in nanocomposite powders and sintered compacts. The electric conduction at the nanocomposite level with very different electric conduction phases will be studied as well.

TEAM STRUCTURE

ChicinasIonel- Project manager
SorcoiAdriana - Senior - Researcher
PricaCalin-Virgiliu - Senior - Researcher
MarincaTraian Florin - Postdoctoral researcher
NeamtuBogdan Viorel - Postdoctoral researcher
Popa Florin- Postdoctoral researcher
Stanciu CristinaDaniela - PhD student
LungTeofil - Technician
Buna Alexandru- Technician
Rus Marcel–Technician
SimonIldikoKatalin – Student
Jucan OvidiuDarius - Student