Magazine et Edition

Volume 66 (2022): Edition 1 (January 2022)

Volume 65 (2021): Edition 4 (December 2021)

Volume 65 (2021): Edition 3 (November 2021)

Volume 65 (2021): Edition 2 (September 2021)

Volume 65 (2021): Edition 1 (May 2021)

Volume 64 (2020): Edition 4 (December 2020)

Volume 64 (2020): Edition 3 (October 2020)

Volume 64 (2020): Edition 2 (June 2020)

Volume 64 (2020): Edition 1 (March 2020)

Volume 63 (2019): Edition 4 (December 2019)

Volume 63 (2019): Edition 3 (November 2019)

Volume 63 (2019): Edition 2 (June 2019)

Volume 63 (2019): Edition 1 (March 2019)

Volume 62 (2018): Edition 4 (December 2018)

Volume 62 (2018): Edition 3 (July 2018)

Volume 62 (2018): Edition 2 (May 2018)

Volume 62 (2018): Edition 1 (February 2018)

Volume 61 (2017): Edition 5 (December 2017)

Volume 61 (2017): Edition 4 (October 2017)

Volume 61 (2017): Edition 3 (July 2017)

Volume 61 (2017): Edition 2 (April 2017)

Volume 61 (2017): Edition 1 (March 2017)

Volume 60 (2016): Edition 5 (December 2016)

Volume 60 (2016): Edition 4 (December 2016)

Volume 60 (2016): Edition 3 (September 2016)

Volume 60 (2016): Edition 2 (June 2016)

Volume 60 (2016): Edition 1 (March 2016)

Volume 59 (2015): Edition 4 (December 2015)

Volume 59 (2015): Edition 3 (November 2015)

Volume 59 (2015): Edition 2 (July 2015)

Volume 59 (2015): Edition 1 (April 2015)

Volume 58 (2014): Edition 4 (December 2014)

Volume 58 (2014): Edition 3 (November 2014)

Volume 58 (2014): Edition 2 (June 2014)

Volume 58 (2014): Edition 1 (March 2014)

Volume 57 (2013): Edition 4 (December 2013)

Volume 57 (2013): Edition 3 (September 2013)

Volume 57 (2013): Edition 2 (June 2013)

Volume 57 (2013): Edition 1 (March 2013)

Volume 56 (2012): Edition 4 (December 2012)

Volume 56 (2012): Edition 3 (October 2012)

Volume 56 (2012): Edition 2 (July 2012)

Volume 56 (2012): Edition 1 (March 2012)

Détails du magazine
Format
Magazine
eISSN
1804-1213
Première publication
03 Apr 2012
Période de publication
4 fois par an
Langues
Anglais

Chercher

Volume 65 (2021): Edition 4 (December 2021)

Détails du magazine
Format
Magazine
eISSN
1804-1213
Première publication
03 Apr 2012
Période de publication
4 fois par an
Langues
Anglais

Chercher

2 Articles
Accès libre

Protective ability of lead corrosion products in indoor atmosphere with acetic acid vapours

Publié en ligne: 30 Dec 2021
Pages: 1 - 6

Résumé

Abstract

Lead corrosion products can undergo certain changes over the time in terms of composition. How these changes affect the corrosion of the underlying lead is an important question for protection of historical lead artefacts. In this work, we focus on characterization of changes in composition of lead corrosion products and how the composition affects corrosion of the lead substrate. Prepared model corrosion products on lead coupons were exposed to air at different relative humidity and concertation of acetic acid vapours. Composition of the corrosion products was analysed by XRD and corrosion rate was calculated from gravimetric data. Measurement of polarization resistance was implemented to get more insight into the protective ability of formate corrosion products. With lead formate covering the surface, the corrosion rate of lead coupons was minimal even in humid air with 400 ppb of acetic acid vapours. Acetic acid was however able to alter lead carbonate corrosion products resulting in increased corrosion rate.

Accès libre

Indoor corrosivity classification based on lead coupons

Publié en ligne: 30 Dec 2021
Pages: 7 - 12

Résumé

Abstract

Air pollution in museums, libraries, churches, and other indoor environments of cultural heritage objects was studied since 1980s. For classification of corrosivity for such type of indoor environments the ISO 11844 series was developed in 2006. In 2020 the revision of this ISO 11844 series had been finished, where lead was included as standard specimen with high sensitivity to vapour organic acids. This paper gives results of exposure of lead standard coupons in museums and other similar indoor environments together with measurement of climatic parameters and air pollution to verify the new approach.

2 Articles
Accès libre

Protective ability of lead corrosion products in indoor atmosphere with acetic acid vapours

Publié en ligne: 30 Dec 2021
Pages: 1 - 6

Résumé

Abstract

Lead corrosion products can undergo certain changes over the time in terms of composition. How these changes affect the corrosion of the underlying lead is an important question for protection of historical lead artefacts. In this work, we focus on characterization of changes in composition of lead corrosion products and how the composition affects corrosion of the lead substrate. Prepared model corrosion products on lead coupons were exposed to air at different relative humidity and concertation of acetic acid vapours. Composition of the corrosion products was analysed by XRD and corrosion rate was calculated from gravimetric data. Measurement of polarization resistance was implemented to get more insight into the protective ability of formate corrosion products. With lead formate covering the surface, the corrosion rate of lead coupons was minimal even in humid air with 400 ppb of acetic acid vapours. Acetic acid was however able to alter lead carbonate corrosion products resulting in increased corrosion rate.

Accès libre

Indoor corrosivity classification based on lead coupons

Publié en ligne: 30 Dec 2021
Pages: 7 - 12

Résumé

Abstract

Air pollution in museums, libraries, churches, and other indoor environments of cultural heritage objects was studied since 1980s. For classification of corrosivity for such type of indoor environments the ISO 11844 series was developed in 2006. In 2020 the revision of this ISO 11844 series had been finished, where lead was included as standard specimen with high sensitivity to vapour organic acids. This paper gives results of exposure of lead standard coupons in museums and other similar indoor environments together with measurement of climatic parameters and air pollution to verify the new approach.

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