Application of Low-temperature Low-pressure Hydrogen Plasma: Treatment of Artificially Prepared Corrosion Layers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F15%3APU110475" target="_blank" >RIV/00216305:26310/15:PU110475 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.degruyter.com/view/journals/chem/open-issue/article-10.1515-chem-2015-0045/article-10.1515-chem-2015-0045.xml" target="_blank" >https://www.degruyter.com/view/journals/chem/open-issue/article-10.1515-chem-2015-0045/article-10.1515-chem-2015-0045.xml</a>

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 Artificially Prepared Corrosion Layers

Popis výsledku v původním jazyce

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 pressure of 160 Pa. Different values of supplied power were chosen as well as different discharge modes: the continuous or the 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).

Název v anglickém jazyce

Application of Low-temperature Low-pressure Hydrogen Plasma: Treatment of Artificially Prepared Corrosion Layers

Popis výsledku anglicky

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 pressure of 160 Pa. Different values of supplied power were chosen as well as different discharge modes: the continuous or the 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).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10403 - Physical chemistry

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

2015

Kód důvěrnosti údajů

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

Název periodika

Open Chemistry

ISSN

2391-5420

e-ISSN

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Svazek periodika

13

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

7

Strana od-do

362-368

Kód UT WoS článku

000355403100043

EID výsledku v databázi Scopus

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