APPLICATION OF MONOCARBOXYLIC SALT FOR PROTECTING LEAD AGAINST CORROSION

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902960" target="_blank" >RIV/60461373:22310/16:43902960 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

APPLICATION OF MONOCARBOXYLIC SALT FOR PROTECTING LEAD AGAINST CORROSION

Popis výsledku v původním jazyce

Currently, the hot topic in restoration and conservation of metals is the application of corrosion inhibitors intended for protection of lead. Our research aims in selection of suitable protection system which would be applicable for conservation of historical lead seals. Commonly, the seals are stored in archives together with documents to which the seal are attached. Vapour organic acids, acetic acid being a typical example, are the most aggressive pollutants in the archives environment considering corrosion of lead. The research was focused on determination of the inhibition efficiency after various manners of lead coupons pre-treatment (corroded and electrochemically cleaned). Sodium undecanoate was used as the inhibitor in concentration of 0.01 and 0.05 mol/l. The solution was applied by immersion for 24 h. Polarization resistance measurement and electrical resistance technique were used to evaluate inhibition efficiency in neutralised acetic acid environment. Artificially created corrosion products were analysed by X-ray diffraction analysis. Electrochemical cleaning of the surface provided high inhibition efficiency of the sodium undecanoate solution (0.05 mol/l). In general, the inhibitor was more efficient at higher concentration. It formed a layer of hydrophobic properties. Unfortunately, disadvantage of this layer is its low abrasion resistance.

Název v anglickém jazyce

APPLICATION OF MONOCARBOXYLIC SALT FOR PROTECTING LEAD AGAINST CORROSION

Popis výsledku anglicky

Currently, the hot topic in restoration and conservation of metals is the application of corrosion inhibitors intended for protection of lead. Our research aims in selection of suitable protection system which would be applicable for conservation of historical lead seals. Commonly, the seals are stored in archives together with documents to which the seal are attached. Vapour organic acids, acetic acid being a typical example, are the most aggressive pollutants in the archives environment considering corrosion of lead. The research was focused on determination of the inhibition efficiency after various manners of lead coupons pre-treatment (corroded and electrochemically cleaned). Sodium undecanoate was used as the inhibitor in concentration of 0.01 and 0.05 mol/l. The solution was applied by immersion for 24 h. Polarization resistance measurement and electrical resistance technique were used to evaluate inhibition efficiency in neutralised acetic acid environment. Artificially created corrosion products were analysed by X-ray diffraction analysis. Electrochemical cleaning of the surface provided high inhibition efficiency of the sodium undecanoate solution (0.05 mol/l). In general, the inhibitor was more efficient at higher concentration. It formed a layer of hydrophobic properties. Unfortunately, disadvantage of this layer is its low abrasion resistance.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the conference METAL 2016

ISBN

978-80-87294-67-3

ISSN

—

e-ISSN

neuvedeno

Počet stran výsledku

5

Strana od-do

1139-1144

Název nakladatele

Tanger s.r.o.

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

25. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000391251200185