degriny, c. electrochemical techniques metal conservation. 2010

8/7/2019 Degriny, C. Electrochemical Techniques Metal Conservation. 2010

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Leiden, 11-15 January 2010

ETICUse of Electrolytic Techniques In metal

Conservation

Activities between 2003 and 2006

C. Degrigny




Participants- Dr Christian Degrigny (MT, coordinator) - Dr Blanca M. Rosales (Br)- Prof Annemie Adriaens (B) - Ms Karen Leyssens (B)

- Dr Joseph Guillaume (B) - Ms Nicky Vergouwen (B)

- Mr Bart Schotte (B) - Mrs Karen Stemann Petersen (DK)

- Mrs Virginia Costa (F) - Mr Jean-Bernard Memet (F)

- Dr Hisasi Takenouti (F) - Dr Paola Letardi (I)- Ms Ilonne de Groot (NL) - Ms Maria Del Pilar Tapia Lopez (M)- Mr Ronny Meijers (NL) - Mr Robert Van Langh (NL)

- Ms Soledad Diaz Martinez (SP) - Mr Marc Gener (SP)

- Dr Kilian Anheuser (CH) - Denise Witschard (CH)- Mr Paul Mardikian (USA)




Objectives• Identification of the teams working

in the field

• Dissemination of availableinformation relevant to the field

• Promotion of good practices




Fields of interest• In-situ monitoring of artefacts and understanding of

corrosion processesThrough the measurement of Ecorr , Rp, EIS… Application to theconservation of outdoor bronze monuments, marine artefacts…

• Storage of artefactsThrough the monitoring of Ecorr with time… Application to the storageand stabilisation of iron and copper artefacts

• Treatment of artefactsThrough cathodic reduction or anodic oxidation and monitoring withtime of cathodic or anodic potentials or the current of thecircuit…Application to the cleaning, stabilisation and protection of

artefacts• Transfer of knowledge

Through training sessions and special courses. Design ofmethodologies to transfer the knowledge to end-users…




Communication tools

ETIC news (1 to 5)- Information on the tasks

performed, in progress orplanned in the future

- List of participants- All documents available

on the Metal homepage

of the ICOM-CC websiteand the METALConsn -info homepage




TasksTask 1: bibliography on all subjects related to the use of electrochemical techniques in metal conservation

Task 2: field of expertise of the members

Task 3a: list of other experts and field of expertise

Task 3b: contact these professionals to get updated information on their ongoing and future projects that might be of some interest to the Metal

WG members

Task 4: organise practical training sessions for the Metal WG members

Task 5: organise the placement of conservation students and youngresearchers who are willing to undertake an internship in a laboratory

specialised in the field

Task 6: stimulate the organisation of meetings between the participants

of the ETIC sub WG.Task 7: communicate the results obtained through conferences (METAL

04, ICOM-CC triennial meeting in the Hague), seminars and using the

BROMEC newsletter




Task 1: The bibliography

• Contributors: Annemie Adriaens,

Kilian Anheuser, Gabriela Cicileo,Virginia Costa, Christian Degrigny,

Gerhard Eggert, Marc Gener, Ilonne deGroot, Paola Letardi, Karen Leyssens,Paul Mardikian, Bart Schotte, KarenStemann Petersen, Hisasi Takenouti

and Denise Witschard.

• Criteria:

- recent publications (post 1990)

- students reports and projects notincluded- older literature largely omitted




Topics• General introduction

• Investigation and treatment of aluminium,copper, iron, lead & tin, silver alloys

• Other and mixed subjects

• Unpublished reports

• EU reports

Need of a regular up-date




Tasks 2: Overview of the workperformed in the field by the sub - WGparticipants

Information collectedfrom a questionnairesent to participants

- name + details- name + address of theinstitution- any experience in the use ofelectrochemical techniques- specific interest in

electrochemical techniques- instruments available




Name Institution Experience in

electrochemical

techniques

Interest in

electrochemical

techniques

Instruments

or devices

available

Other information

(training…)

Mr Joseph

GUILLAUME

Chemist and

physicist

Lab research

Tel 32.2.227.35.54

Fax

32.2.217.46.07

Email

[email protected]

Institut

Supérieur

Industriel de

Bruxelles

(ISIB)

150 rue Royale

1000 Brussels

Belgium

Technique:

potentiodynamic

polarisations

Metal: Bronzes

Lab work / conservation

application: protection

of Vietnamianese

bronzes: use of the

potentiostat to

understand the

formation of the patina

in the peculiarVietnamese conditions

Electrocleaning of

ancient silver and gold

artefacts and protection

and conservation of

patrimonial objects

- potentiostat EGG

362

- interface

potentiostat

Solartron 1186

- Tacussel

impedance

measurement

system

- Collaboration with different Belgian

museums (MRAH, Mariemont… ),

the National Museum of Vietnamese

History in Hanoi and Région

Wallonne- conservation du

patrimoine.

- Collaboration with different Belgian

university: Free University of Brussels

(VUB), Dept. Metallurgy,

Electrochemistry and Materials

Science (META), Brussels and

University of Liege : IPNAS (institut

physique nucléaire atomique et despectroscopie)

An example…




Other tasks• Updating Tasks 1 & 2• Starting Task 3: contribution from other

specialists and contacting these specialists toupdate the knowledge

• Task 4: Organisation of training schools in

conservation schools and summer schools (LaChaux-de-Fonds (CH), COST G8 STSMs & EAS06 (USA))

• Task 6: ESF applications & the EAS 06 CSA• Task 7: BROMEC, COST G8 (STSMs)




• Basic theoretical knowledgethrough lectures

• Followed by practical sessions

- meaning and measurement of Ecorr

(influence of other parameters)

- use of Pourbaix diagrammes

- use of a power supply and a potentiostat- set-up of experiments

Summer school in La-Chaux-de-Fonds (CH) – July 2004

Task 4: Training School & Summer school




Task 4: Training School & Summer school

COST G8 Short Term Scientific missions (STSMs)

• Electrochemical study of the behaviour of lead andsilver alloys aiming to define treatment conditions forheritage artefacts (V. Costa at the Department ofAnalytical Chemistry, Gent (B) – June 2004 & July

2005)

• Characterization of the corrosion products present in

brown spots on historic gold coins and medals (V.Costa at the Kunsthistoriches Museum, Vienna (A) – April 2004)




Task 6: Applications to the ESF

•Exploratory Workshops- a challenging scientific topic, preferably an emerging or innovativefield of research

- a challenging science-driven issue of research infrastructure (RI)

•All scientific domains•To allow leading European scientists to meet toexplore novel ideas

•Malta not eligible in 2004: Arc’Antique (F) proposed tocoordinate the project .

Use of Electrochemical Techniques for the

conservation of Archaeological and Historic ArtefactsDid not go through. Second run in 2005: Department ofAnalytical Chemistry (B). Did not go through either.

Budget: 15000€




Tasks 4 & 6: EAS 06 - CSA

• Coordinated by John Scott (NYCF) and ChristianDegrigny• November 11-16, 2006• 3 sessions (Task 6):- Electrochemical study of corrosion processes and control(V. Costa, D. Cook, D. Hallam, L.Abrantes & T. Shedolsky)

- In-situ monitoring of corrosion processes on metal artefacts(I. MacLeod, B.Rosales, P. Letardi & A. Adriaens)

- Electrochemical treatment of metal artefacts(C. Degrigny, D. Hamilton, P. Mardikian, V. Costa & A. Adriaens

• Two short courses (Task 4)- Parameters used to monitor, store and treat metal artefacts: anintroduction (C. Degrigny)

- Portable electrochemical techniques: a review (V. Costa)




Task 7: Communication

“Art et Electrochemistry”, Paris (France), May 2004organised by the Electrochemistry Group of the French

Society of Chemistry

METAL 04, Canberra (AUS), September 2004 Sub-WGssession

“Modern electrochemical methods in metalconservation”, Stuttgart (D), April 2005 MetalConservation Colloquium, SABK

ETIC ICOM-CCsubWG, Gent 2006 EAS 2006,

Somerset, NY




Task 7: ETIC themes in BROMEC issues

14 abstracts until now

- Study of corrosion processes (Fe in soil)

- Stabilisation of artefacts (pulsed currents on Fe,

composite objects, lead objects, copper base alloys)- use of Ecorr measurements (storage and

identification of copper alloys

- Protection of artefacts (copper)




Most recent publications on the field

Electrochemistry for Conservation

Science Journal of Solid State

ElectrochemistryÉditeur Springer Berlin / HeidelbergVolume 14, Number 3 / mars 2010

degriny, c. electrochemical techniques metal conservation. 2010

Documents