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Mechanical Alloying of Al_{73}Cu_{11}Cr_{16} Alloy from Ion Irradiated Powders

100%

Medvedeva E., Tcherdyntsev V., Makhin'ko F., Gushchina N., Ovchinnikov V.

Acta Physica Polonica A

2014

vol. 126

issue 4

979-983

Al_{73}Cu_{11}Cr_{16} alloys were prepared by mechanical alloying of the irradiated by Ar^{+} ions elemental powders. Evolution of alloy structure at ball milling, as well as during the further annealing, was investigated using X-ray diffraction and differential scanning calorimetry. It was shown that ball milling leads to the Cu dissolution in Al and Cr and to the formation of Al_{2}Cu intermetallic phase. An increase of the milling duration leads to an increase of the Al_{2}Cu phase content in the samples. Ion irradiation of initial elemental powders results in an increase of their interaction rate at milling. In the case of irradiated powders using as initial materials, a content of Al_{2}Cu phase after milling is higher than in the case of using non-irradiated elemental powders. No effect of irradiation of initial elemental powders on the phase transformation at heating was observed. The annealing results in the decomposition of Al- and Cr-based supersaturated solid solutions. An increase in the Al_{2}Cu phase content at heating was observed only in the samples, which were milled for 4 h. In the samples milled for 14 h, nearly no increase in Al_{2}Cu phase content at heating was observed. Heating up to 500-600°C results in the single-phase decagonal quasicrystalline phase formation for all of the studied samples.

Spectroscopic Studies of Neodymium and Europium Phosphoro-azo β-Diketonates

86%

Amirkhanov V., Ovchinnikov V., Legendziewicz J., Graczyk A., Hanuza J., Macalik L.

Acta Physica Polonica A

1996

vol. 90

issue 2

455-460

New complexes of lanthanides (Nd, Eu) with phosphoro-azo derivatives of β-diketones were synthesized. Optical properties of these compounds were investigated and confronted with the structure and single crystal spectra of different types of earlier reported lanthanide phosphoro-azo-β-diketonates. The exchange of the N-P-O-Me ligand group by the N-P-NR_{2} one plays only a minor role in binding character of lanthanide ions but strongly affects biological functions and properties of lanthanide systems. In vitro experiment on cytotoxicity of the samples was performed using 10T_{1/2}, L_{1}, MCF, DETA and Meω-132 cell lines.

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2 Acta Physica Polonica A

1 2014

1 1996

2 Ovchinnikov V.

1 Amirkhanov V.

1 Graczyk A.

1 Gushchina N.

1 Hanuza J.

1 Legendziewicz J.

1 Macalik L.

1 Makhin'ko F.

1 Medvedeva E.

1 Tcherdyntsev V.

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Mechanical Alloying of Al_{73}Cu_{11}Cr_{16} Alloy from Ion Irradiated Powders

Spectroscopic Studies of Neodymium and Europium Phosphoro-azo β-Diketonates