{"id":20842,"date":"2016-03-17T11:19:00","date_gmt":"2016-03-17T11:19:00","guid":{"rendered":"https:\/\/www.he-arc.ch\/projets-recherche\/saint-maurice\/"},"modified":"2025-12-09T15:46:20","modified_gmt":"2025-12-09T14:46:20","slug":"saint-maurice","status":"publish","type":"he-arc_project","link":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/saint-maurice\/","title":{"rendered":"SAINT-MAURICE"},"content":{"rendered":"\n
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\n Project leader\n <\/div>\n
\n Christian Degrigny<\/a>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n

USEFUL LINKS<\/h3>\n\n\n\n

The PLECO has been designed as an open source tool that should benefit from any improvement provided by end-users link to the projet PLECO<\/a>.<\/p>\n\n\n\n

Links to the Saint-Maurice’s final report<\/a> and to the appendix of the report<\/a><\/p>\n\n\n\n

PROGRAM<\/h3>\n\n\n\n

The tarnish removal was carried out at constant potential and the reduction current was monitored versus time (chronoamperometric plots).<\/p>\n\n\n\n

The PLECO was moved by hand (dynamic mode) from one plate to another in order to clean first silver chloride tarnish and eventually silver sulphide tarnish.
By doing so, we could prevent any risk of overcleaning (hydrogen embrittlement) on these medieval silver plates that are often heavily cracked.<\/p>\n\n\n\n

RESULTS<\/h3>\n\n\n\n

The PLECO has successfully been used on some masterpieces of the Treasury of Saint-Maurice Abbey. In static mode, voltammetric curves were systematically plotted on all plates of the same artefact to map precisely the nature and the level of tarnishing.<\/p>\n\n\n\n

FUNDING<\/h3>\n\n\n\n