From crystal to amorphous transformation in Hf63Pd37 system prepared by mechanical alloying

Abstract EN

The structural transformation from crystalline structure to amorphous structure of HfPd system prepared by mechanical alloying (MA) technique was investigated.

X-ray diffraction technique was used to study structural changes with MA time.

Differential scanning calorimetry (DSC) was used to study the stability of the resulting amorphous HfPd phase.

A direct transformation from crystalline to amorphous phase was observed.

The density of the crystalline peaks of both the hexagonal Hf and cubic Pd phases decayed exponentially as a function of the milling time.

The time constants of the decaying process were obtained.

On an atomic scale, the radial distribution function RDF(r) and the thermal behavior of the MA Hf63Pd37 (milled for 6 h) showed that it is of a single amorphous phase