Composition of Surface Layers Prepared by Ion Beam Assisted Deposition of Catalytic Metals from Pulsed Arc-Discharge Plasma onto Carbon Paper Substrates

• Authors: V. Poplavsky , V. Luhin , T. Koltunowicz
• Languages of publication: EN

Abstracts

EN

The layers were prepared by ion beam assisted deposition of iridium and platinum onto AVCarb® Carbon Fiber Paper P50 electrocatalyst supports for the production of diffusion layers of the membrane-electrode assemblies of low temperature fuel cells with polymer electrolyte membrane. Formation of the layers in the ion beam assisted deposition mode, by means of the deposition of metal and mixing of precipitating layer with the substrate by the accelerated (U=10 kV) ions of the same metal, was performed. In this process neutral fraction of metal vapour and ionized plasma of vacuum pulsed electric arc discharge were used. The investigations of morphology and composition of layers were carried out by the scanning electron microscopy, energy dispersive X-ray microanalysis, wave dispersive X-ray fluorescence analysis, and the Rutherford backscattering spectrometry methods. It was established that the obtained catalytic layers contain atoms of the deposited metals and substrate material as well as impurity oxygen atoms. The surfaces contain also metal inclusions of several micrometer size which arise from the precipitation of deposited metal droplets from the arc discharge of an ion source. The content of iridium and platinum atoms in the layers is ≈2×10¹⁶ cm¯²; the concentration of the deposited metals equals about several atomic percent.

Keywords

EN

68.37.Hk; 81.15.Jj; 81.05.U-; 82.80.Yc

Discipline

• 82.80.Yc: Rutherford backscattering (RBS), and other methods of chemical analysis
• 81.05.U-: Carbon/carbon-based materials(for carbon-based superconductors, see 74.70.Wz)
• 81.15.Jj: Ion and electron beam-assisted deposition; ion plating(see also 52.77.Dq Plasma-based ion implantation and deposition in physics of plasmas)
• 68.37.Hk: Scanning electron microscopy (SEM) (including EBIC)

• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 132
• Issue: 2
• Pages: 295-298

Dates

published

2017-08

Contributors

author

V. Poplavsky

• Belarusian State University of Technology, 13a, Sverdlov Str., 220006 Minsk, Belarus

author

V. Luhin

• Belarusian State University of Technology, 13a, Sverdlov Str., 220006 Minsk, Belarus

author

T. Koltunowicz

• Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.131.295