Search for content and authors
 

SEM investigation of Fe-Al-C alloys after thermal and high pressure influence

Oleksandra V. Zarytska 3Yevgeniy M. Dzevin 1Anatoliy G. Garan 2Dmytro I. Oliferuk 1Vladyslav A. Andryuschenko 1

1. G. V. Kurdyumov Institute for Metal Physics of the National Academy of Sciences (IMP), Vernadsky Blvd. 36, Kiev UA03680, Ukraine
2. V. Bakul Institute for Superhard Materials NAS of Ukraine, 2, Autozavodska str., Kiev 04074, Ukraine
3. Physical Engineering Centre, National Academy of Sciences of Ukraine (FTC), Vernadskiy's blvd., 36, Kiev 03680, Ukraine

Abstract

The samples were undergone to thermal and pressure influence in the region of pressures of 6,0 – 8,0 GPa and temperatures 1670 – 1870 K during 120 sek. Order of influence: establishment of pressure – heating – exposure – cooling – taking down of pressure.

The alloys Fe3AlC (85,5 wt.% Fe, 12wt.%Al, 2,5 wt.%C) and (Fe3Al)40C60 (90,3 wt.% Fe, 5,81 wt.%Al, 3,88 wt.%C) were studied in the experiment.

In the alloy Fe3AlC using SEM method it was observed some quantity of diamond microcrystal groups (20-100 mm) in K-phase matrix.

In the (Fe3Al)40C60 alloy after thermal and pressure influence it was observed the volumes which were filled up on 30% by diamond crystals of 50-200 mm. At that at the less thermal and pressure parameters (6 GPa and 1670K) the synthetic diamond micro crystals with developed surface forms, but at more high (8GPa and 1879 K) – diamonds like perfect octahedral micro crystals forms.

Spectral investigations in Fe- and Al-irradiation have shown the presence of 3:1 atoms of Fe and Al in diamond micro crystals.

 
 

Legal notice
  • Legal notice:
 

Related papers

Presentation: Poster at 11th European Powder Diffraction Conference, Poster session, by Oleksandra V. Zarytska
See On-line Journal of 11th European Powder Diffraction Conference

Submitted: 2008-03-03 15:31
Revised:   2009-06-07 00:48