Application of Low-Temperature Low-Pressure Hydrogen Plasma: Treatment of Artficially Prepared Corrosion Layers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F13%3APU105276" target="_blank" >RIV/00216305:26310/13:PU105276 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Application of Low-Temperature Low-Pressure Hydrogen Plasma: Treatment of Artficially Prepared Corrosion Layers

Popis výsledku v původním jazyce

The aim of this work is application of low-temperature low-pressure hydrogen plasma on artificially prepared corrosion layers, so called plasma chemical reduction. It is necessary using samples with artificially prepared corrosion layers because it is impossible use the real artifacts for fundamental research. Formation of the corrosion layers on the bronze samples took place in concentrated hydrochloric acid vapors with addition of sand. The radio-frequency hydrogen plasma was generated in the flowingregime at pressure of 100 Pa. It was chosen different values of delivery power and different discharge modes: the continuous or the pulsed. By combination of delivery power and mode factors we selected two values of effective power. 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. The changes in the structure and elemental comp

Název v anglickém jazyce

Application of Low-Temperature Low-Pressure Hydrogen Plasma: Treatment of Artficially Prepared Corrosion Layers

Popis výsledku anglicky

The aim of this work is application of low-temperature low-pressure hydrogen plasma on artificially prepared corrosion layers, so called plasma chemical reduction. It is necessary using samples with artificially prepared corrosion layers because it is impossible use the real artifacts for fundamental research. Formation of the corrosion layers on the bronze samples took place in concentrated hydrochloric acid vapors with addition of sand. The radio-frequency hydrogen plasma was generated in the flowingregime at pressure of 100 Pa. It was chosen different values of delivery power and different discharge modes: the continuous or the pulsed. By combination of delivery power and mode factors we selected two values of effective power. 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. The changes in the structure and elemental comp

Druh

O - Ostatní výsledky

CEP obor

AC - Archeologie, antropologie, etnologie

OECD FORD obor

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Projekt

<a href="/cs/project/DF11P01OVV004" target="_blank" >DF11P01OVV004: Plazmochemické procesy a technologie pro konzervaci kovových archeologických předmětů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů