Application of low-temperature low-pressure hydrogen plasma: treatment of artificially prepared corrosion layers

• Autorzy: Petra Fojtíková , Lucie Řádková , Drahomíra Janová , František Krčma
• Języki publikacji: EN

Abstrakty

EN

The aim of this work is the application of low-temperature low-pressure hydrogen plasma on artificially prepared corrosion layers, so called plasma chemical reduction. It is necessary to use samples with artificially prepared corrosion layers because it is impossible to use the real artifacts for fundamental research. The bronze was chosen as a sample material. Formation of corrosion layers on the bronze samples was carried out in concentrated hydrochloric acid vapors with the addition of sand. The radio-frequency hydrogen plasma was generated in the flowing regime at a pressure of 160 Pa. Different values of supplied power were chosen as well as different discharge modes: continuous or pulsed mode with varied duty cycles. By the combination of supplied power and mode factors, we selected two values of effective power. The process of plasma chemical reduction was monitored by optical emission spectroscopy (OES) and simultaneously, the sample temperature was measured. Rotational temperatures were calculated from OH radicals spectra. Changes in the structure and elemental composition were determined using scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX).

EN

Słowa kluczowe

EN

bronze; corrosion layers; hydrogen plasma; optical emission spectroscopy; microanalysis

• Czasopismo: Open Chemistry
• Rocznik: 2015
• Tom: 13
• Numer: 1

Daty

otrzymano

2014-01-07

zaakceptowano

2014-05-13

online

2014-11-17

Twórcy

autor

Petra Fojtíková

• Brno University of Technology, Faculty of Chemistry, Institute of Physical and Applied Chemistry, 612 00 Brno, Czech Republic,

autor

Lucie Řádková

• Brno University of Technology, Faculty of Chemistry, Institute of Physical and Applied Chemistry, 612 00 Brno, Czech Republic

autor

Drahomíra Janová

• Brno University of Technology, Faculty of Mechanical Engineering, Institute of Material Science and Engineering, 616 00 Brno, Czech Republic

autor

František Krčma

• Brno University of Technology, Faculty of Chemistry, Institute of Physical and Applied Chemistry, 612 00 Brno, Czech Republic

Bibliografia

• [1] Krčma F., Sázavská V., Zemánek N., Řádková L., Fojtíková P., Přikryl R., et al., XVIIIth Symposium on Physics of Switching Arc,7-11.9.2009, Nové Město na Moravě, Czech Republic, 2009, 60
• [2] Daniels V.D., Holland L., Pascoe M.W., Studies in Conservations, 1979, 24
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• [4] Vepřek S., Patscheider J., Elmer J., Plasma Chemistry and Plasma Processing, 1986, 8
• [5] Patscheider J., Vepřek S., Studies in Conservation, 1986, 31
• [6] Vepřek S., Eckmann Ch., Elmer J., Plasma Chemistry and Plasma Processing, 1988, 8
• [7] Schmidt-Ott K., Boissonnas V., Studies in Conservation, 2002, 47
• [8] Bassiakos Y., Analytical and Bioanalytical Chemistry, 2009, 395(7), 2235-2244
• [9] Selucká A., Conservation of Metallic Artifacts. Internal manual of Technical Museum in Brno, Technical Museum in Brno, Brno 2011 (in Czech)
• [10] Rašková Z., Krčma F., Klíma M., Kousal J., Czechoslovak Journal of Physics, 2002, 52
• [11] Řádková L., Sázavská V., Krčma F., The European Corrosion Congress, 9-13.9.2012, Istanbul, Turkey,2012, 591
• [12] Ingo G.M., et al., Applied Physics A Materials Science & Processing, 2006, 83

Identyfikatory

DOI

10.1515/chem-2015-0045