Publication detail

Application of low temperature plasmas for restoration/conservation of archaeological objects

KRČMA, F. BLAHOVÁ, L. FOJTÍKOVÁ, P. GRAHAM, W. GROSSMANNOVÁ, H. HLOCHOVÁ, L. HORÁK, J. JANOVÁ, D. KELSEY, C. KOZÁKOVÁ, Z. MAZÁNKOVÁ, V. PROCHÁZKA, M. PŘIKRYL, R. ŘÁDKOVÁ, L. SÁZAVSKÁ, V. VAŠÍČEK, M. VEVERKOVÁ, R. ZMRZLÝ, M.

Original Title

Application of low temperature plasmas for restoration/conservation of archaeological objects

English Title

Application of low temperature plasmas for restoration/conservation of archaeological objects

Type

journal article in Web of Science

Language

en

Original Abstract

The low temperature low-pressure hydrogen based plasmas were used to study the influence of processes and discharge conditions on corrosion removal. The capacitive coupled RF discharge in the continuous or pulsed regime was used at operating pressure of 100-200 Pa. Plasma treatment was monitored by optical emission spectroscopy. To be able to study influence of various process parameters, the model corroded samples with and without sandy incrustation were prepared. The SEM-EDX analyzes were carried out to verify corrosion removal efficiency. Experimental conditions were optimized for the selected most frequent materials of original metallic archaeological objects (iron, bronze, copper, and brass). A special focus was kept for the samples temperature because it was necessary to avoid any metallographic changes in the material structure. The low pressure hydrogen plasma is not applicable for objects with a very broken structure or for non-metallic objects due to the non-uniform heat stress. Due to this fact, the new developed plasmas generated in liquids were applied on selected glass materials. The original archaeological objects were used in this case because it was very complicated to prepare a uniform artificial corrosion layer at laboratory conditions.

English abstract

The low temperature low-pressure hydrogen based plasmas were used to study the influence of processes and discharge conditions on corrosion removal. The capacitive coupled RF discharge in the continuous or pulsed regime was used at operating pressure of 100-200 Pa. Plasma treatment was monitored by optical emission spectroscopy. To be able to study influence of various process parameters, the model corroded samples with and without sandy incrustation were prepared. The SEM-EDX analyzes were carried out to verify corrosion removal efficiency. Experimental conditions were optimized for the selected most frequent materials of original metallic archaeological objects (iron, bronze, copper, and brass). A special focus was kept for the samples temperature because it was necessary to avoid any metallographic changes in the material structure. The low pressure hydrogen plasma is not applicable for objects with a very broken structure or for non-metallic objects due to the non-uniform heat stress. Due to this fact, the new developed plasmas generated in liquids were applied on selected glass materials. The original archaeological objects were used in this case because it was very complicated to prepare a uniform artificial corrosion layer at laboratory conditions.

Keywords

Hydrogen plasma, corrosion removal, discharge in liquid, surface treatment

RIV year

2014

Released

18.12.2014

Publisher

IOP Publishing

Location

Belgrade

Pages from

012012-1

Pages to

012012-10

Pages count

10

URL

Full text in the Digital Library

BibTex


@article{BUT109504,
  author="František {Krčma} and Lucie {Blahová} and Petra {Miková} and William {Graham} and Hana {Grossmannová} and Lenka {Holíková} and Jakub {Horák} and Drahomíra {Janová} and Colin Patrick {Kelsey} and Zdenka {Kozáková} and Věra {Mazánková} and Michal {Procházka} and Radek {Přikryl} and Lucie {Řádková} and Věra {Sázavská} and Michal {Vašíček} and Radka {Veverková} and Martin {Zmrzlý}",
  title="Application of low temperature plasmas for restoration/conservation of archaeological objects",
  annote="The low temperature low-pressure hydrogen based plasmas were used to study the influence of processes and discharge conditions on corrosion removal. The capacitive coupled RF discharge in the continuous or pulsed regime was used at operating pressure of 100-200 Pa. Plasma treatment was monitored by optical emission spectroscopy. To be able to study influence of various process parameters, the model corroded samples with and without sandy incrustation were prepared. The SEM-EDX analyzes were carried out to verify corrosion removal efficiency. Experimental conditions were optimized for the selected most frequent materials of original metallic archaeological objects (iron, bronze, copper, and brass). A special focus was kept for the samples temperature because it was necessary to avoid any metallographic changes in the material structure. The low pressure hydrogen plasma is not applicable for objects with a very broken structure or for non-metallic objects due to the non-uniform heat stress. Due to this fact, the new developed plasmas generated in liquids were applied on selected glass materials. The original archaeological objects were used in this case because it was very complicated to prepare a uniform artificial corrosion layer at laboratory conditions.",
  address="IOP Publishing",
  chapter="109504",
  doi="10.1088/1742-6596/565/1/012012",
  institution="IOP Publishing",
  number="1",
  volume="565",
  year="2014",
  month="december",
  pages="012012-1--012012-10",
  publisher="IOP Publishing",
  type="journal article in Web of Science"
}