Inhibition efficiency of sodium salts of carboxylic acids on corrosion of lead in archive environment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43919473" target="_blank" >RIV/60461373:22310/19:43919473 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.scopus.com/record/display.uri?eid=2-s2.0-85063528176&origin=resultslist&sort=plf-f&src=s&sid=85d9fb469afc002ccc19e9fef79bc69c&sot=autdocs&sdt=autdocs&sl=18&s=AU-ID%2824477973700%29&relpos=5&citeCnt=1&searchTerm=" target="_blank" >https://www.scopus.com/record/display.uri?eid=2-s2.0-85063528176&origin=resultslist&sort=plf-f&src=s&sid=85d9fb469afc002ccc19e9fef79bc69c&sot=autdocs&sdt=autdocs&sl=18&s=AU-ID%2824477973700%29&relpos=5&citeCnt=1&searchTerm=</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/kom-2019-0005" target="_blank" >10.2478/kom-2019-0005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Inhibition efficiency of sodium salts of carboxylic acids on corrosion of lead in archive environment

Popis výsledku v původním jazyce

Lead in archive environment suffers from severe corrosion attack caused by the organic acids&apos; vapours usually presented in such an environment. One of possible ways of corrosion protection of lead is its surface treatment by solutions of sodium salts of monocarboxylic acids (general formula CH 3 (CH 2 ) n-2 COONa, noted NaC n , n = 10, 11, 12). The principle of this corrosion protection is a creation of conversion coating on the lead&apos;s surface, which decreases corrosion rate of lead in the atmospheric environment polluted by organic acids&apos; vapour. Our research aims at the selection of a suitable protection system that would be applicable to conservation of historical lead in archives and museums. This paper evaluates the corrosion behaviour of treated lead based on the values of polarisation resistance and shape of potentiodynamic curves in simulated corrosive environment (0.01 mol l -1 solution of acetic acid). The lead samples with different state of surface (pure, corroded and electrochemically cleaned) were treated with sodium salts of monocarboxylic acids NaC n (n = 10, 11, 12) having concentration of 0.01 and 0.05 mol l -1 . In simulated corrosive atmosphere (above 0.001 mol l -1 acetic acid solution vapours), corrosion rate was measured by means of electrical resistance technique. The inhibition efficiency of monocarboxylic acids is dependent on their carbon chain length and their concentration. The greatest inhibiting efficiency in corrosive atmospheres and for all lead samples was observed for the sodium salt of dodecanoic acid having concentration of 0.05 mol l -1 . Artificially created corrosion products and salt coatings were analysed by X-ray diffraction analysis.

Název v anglickém jazyce

Inhibition efficiency of sodium salts of carboxylic acids on corrosion of lead in archive environment

Popis výsledku anglicky

Lead in archive environment suffers from severe corrosion attack caused by the organic acids&apos; vapours usually presented in such an environment. One of possible ways of corrosion protection of lead is its surface treatment by solutions of sodium salts of monocarboxylic acids (general formula CH 3 (CH 2 ) n-2 COONa, noted NaC n , n = 10, 11, 12). The principle of this corrosion protection is a creation of conversion coating on the lead&apos;s surface, which decreases corrosion rate of lead in the atmospheric environment polluted by organic acids&apos; vapour. Our research aims at the selection of a suitable protection system that would be applicable to conservation of historical lead in archives and museums. This paper evaluates the corrosion behaviour of treated lead based on the values of polarisation resistance and shape of potentiodynamic curves in simulated corrosive environment (0.01 mol l -1 solution of acetic acid). The lead samples with different state of surface (pure, corroded and electrochemically cleaned) were treated with sodium salts of monocarboxylic acids NaC n (n = 10, 11, 12) having concentration of 0.01 and 0.05 mol l -1 . In simulated corrosive atmosphere (above 0.001 mol l -1 acetic acid solution vapours), corrosion rate was measured by means of electrical resistance technique. The inhibition efficiency of monocarboxylic acids is dependent on their carbon chain length and their concentration. The greatest inhibiting efficiency in corrosive atmospheres and for all lead samples was observed for the sodium salt of dodecanoic acid having concentration of 0.05 mol l -1 . Artificially created corrosion products and salt coatings were analysed by X-ray diffraction analysis.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/DG16P02R040" target="_blank" >DG16P02R040: Vývoj metod konzervování pečetí a jejich textilních závěsů</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Koroze a ochrana materiálu

ISSN

0452-599X

e-ISSN

—

Svazek periodika

63

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

37-47

Kód UT WoS článku

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EID výsledku v databázi Scopus

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