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Iron-containing phases in fly ashes from different combustion systems

100%

Szumiata T., Gzik-Szumiata M., Brzózka K., Górka B., Gawroński M., Świetlik R., Trojanowska M.

Nukleonika

2015

vol. 60

issue 1

151-154

The investigations of iron-containing phases existing in fly ashes were performed using transmission Mössbauer spectrometry. The examined samples of fly ashes were collected from different coal combustion systems, that is, stoker-fired boiler in municipal heating plant and pulverized coal boiler in power plant. Several phases are identified in the samples: iron oxides, paramagnetic aluminosilicate glass with Fe3+ ions and Al2O4-type spinel with Fe2+ ions. It was pointed out that proportions of contents of phases strongly depend not only on the combustion temperature but also on the way of ash collection.

Subsurface structure and magnetic parameters of Fe-Mo-Cu-B metallic glass

88%

Miglierini M., Hasiak M., Bujdoš M.

Nukleonika

2015

vol. 60

issue 1

115-119

Subsurface properties of 57Fe81Mo9Cu1B9 metallic glass were studied by conversion electron and conversion X-ray Mössbauer spectrometry. They were applied to both surfaces of the ribbons. Deviations in structural surface features are exhibited via different contents of crystalline phases, which were identified as bcc-Fe and magnetite. The presence of small ferromagnetic particles was also suggested from magnetic measurements. An influence of irradiation with 130-keV N+ ions on surface properties of the as-quenched alloy is also discussed.

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2 Nukleonika

2 2015

1 Brzózka K.

1 Bujdoš M.

1 Gawroński M.

1 Gzik-Szumiata M.

1 Górka B.

1 Hasiak M.

1 Miglierini M.

1 Szumiata T.

1 Trojanowska M.

1 Świetlik R.

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Iron-containing phases in fly ashes from different combustion systems

Subsurface structure and magnetic parameters of Fe-Mo-Cu-B metallic glass