{"id":71055,"date":"2025-08-07T14:54:28","date_gmt":"2025-08-07T12:54:28","guid":{"rendered":"https:\/\/www.he-arc.ch\/?post_type=he-arc_project&#038;p=71055"},"modified":"2025-08-15T15:58:46","modified_gmt":"2025-08-15T13:58:46","slug":"cleanlab-corrosion-and-cleaning-of-lacquered-brasse","status":"publish","type":"he-arc_project","link":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/","title":{"rendered":"CLEANLAB \u2013 Corrosion and cleaning of lacquered brasse"},"content":{"rendered":"\n<div id=\"contact-card-block_403724e1cad49772eed1ea4f27f6a815\" class=\"contact-card is-shadowed mb-2-5 is-not-contained\">\n  <div class=\"contact-card__inner\">\n                <div class=\"contact-entry mb-1\">\n        Project leader\n      <\/div>\n                      <div class=\"contact-entry \">\n        <a href=\"https:\/\/people.he-arc.ch\/contact.php?id=3373568773\" target='_blank' class=\"simple-link contact-entry mb-1\">Julie Schr\u00f6ter<\/a>\n      <\/div>\n            <\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">OBJECTIVES<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Objects made of lacquered brass are widely represented in museum\u2019s collections. This technique was applied to various categories of artefacts such as scientific instruments and decorative bronze items, including horological and liturgical objects. The degradation of both the varnish and the metal alloy are a frequent problem from an esthetical point of view and can also endanger the conservation of the objects.<br>In order to consider their preservation, the project objectives are :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>to investigate the degradation mechanisms of lacquered brass ;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>to validate non-invasive and effective cleaning methods, which allow conservators to remove corrosion and preserve the lacquers as much as possible.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PROGRAM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The research program includes :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>an experimental study of degradation phenomena occurring on lacquered brass including two different types of varnishes and different pollutants ;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>a comparative study with chemical gel cleaning systems.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">RESULTS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The main deliverables of the project will be :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>to contribute to a better understanding of degradation mechanisms of ancient, lacquered copper alloys, by establishing a correlation between surface appearance, the type of varnish and surface degradation ;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>to validate one or several effective and non-invasive cleaning methods by providing a protocol including the following parameters : the type of gel and chemical reagent, treatment length, a possible combination of different gels as well as the type and length of rinsing.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"sponsors\">FUNDINGS<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HES-SO, r\u00e9seau de comp\u00e9tences Design et Arts visuels <a href=\"https:\/\/www.hes-so.ch\/recherche-innovation\/projets-de-recherche\/detail-projet\/le-nettoyage-des-laitons-vernis-et-corrodes-cleanlab\">hes-so.ch<\/a><\/li>\n\n\n\n<li><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">PARTNERS<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00c9cole polytechnique f\u00e9d\u00e9ral de Lausanne (EPFL) <a href=\"https:\/\/www.epfl.ch\/en\/\">epfl.ch<\/a><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HE-Arc Engineering <a href=\"https:\/\/www.he-arc.ch\/en\/domain\/engineering\/\">he-arc.ch<\/a><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>International Museum of Horology, La Chaux-de-Fonds <a href=\"https:\/\/www.mih.ch\/\">mih.ch<\/a><\/li>\n<\/ul>\n\n\n\n<div class=\"cta-cards  \">\n\n    \n      \n        <ul class=\"flex-row mt-3 w-list-unstyled\">\n              <li class=\"size-full\">\n  \n  \n        <a href=\"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/11\/Projet_CleanLab.pdf\"  class=\"cta-card is-wide is-shadowed\">\n                <div class=\"cta-card__inner is-with-arrow\">\n                <h3 class=\"cta-card__title pretty-underline is-xlarge\">PDF version<\/h3>\n        <p class=\"cta-card__description is-large\"><\/p>\n                  <span class=\"icon-arrow-right cta-card__arrow\" \/>\n              <\/div>\n        <\/a>\n    \n  \n<\/li>\n          <\/ul>\n    \n  \n<\/div>","protected":false},"author":38,"featured_media":39945,"template":"","he-arc_domain":[5],"he-arc_project_skill":[],"he-arc_project_year":[44,45,46],"class_list":["post-71055","he-arc_project","type-he-arc_project","status-publish","has-post-thumbnail","hentry","he-arc_domain-conservation-restauration","he-arc_project_year-44","he-arc_project_year-45","he-arc_project_year-46"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>CLEANLAB \u2013 Corrosion and cleaning of lacquered brasse - Haute-Ecole Arc<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CLEANLAB \u2013 Corrosion and cleaning of lacquered brasse - Haute-Ecole Arc\" \/>\n<meta property=\"og:description\" content=\"OBJECTIVES Objects made of lacquered brass are widely represented in museum\u2019s collections. This technique was applied to various categories of artefacts such as scientific instruments and decorative bronze items, including horological and liturgical objects. The degradation of both the varnish and the metal alloy are a frequent problem from an esthetical point of view and [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/\" \/>\n<meta property=\"og:site_name\" content=\"Haute-Ecole Arc\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-15T13:58:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/11\/COR-CLEANLAB_ProjetRAD.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"793\" \/>\n\t<meta property=\"og:image:height\" content=\"441\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/\",\"url\":\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/\",\"name\":\"CLEANLAB \u2013 Corrosion and cleaning of lacquered brasse - Haute-Ecole Arc\",\"isPartOf\":{\"@id\":\"https:\/\/www.he-arc.ch\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/11\/COR-CLEANLAB_ProjetRAD.jpg\",\"datePublished\":\"2025-08-07T12:54:28+00:00\",\"dateModified\":\"2025-08-15T13:58:46+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#primaryimage\",\"url\":\"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/11\/COR-CLEANLAB_ProjetRAD.jpg\",\"contentUrl\":\"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/11\/COR-CLEANLAB_ProjetRAD.jpg\",\"width\":793,\"height\":441},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.he-arc.ch\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"R&D projects\",\"item\":\"https:\/\/www.he-arc.ch\/en\/rd-projects\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"CLEANLAB \u2013 Corrosion and cleaning of lacquered brasse\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.he-arc.ch\/en\/#website\",\"url\":\"https:\/\/www.he-arc.ch\/en\/\",\"name\":\"Haute-Ecole Arc\",\"description\":\"Haute \u00e9cole sp\u00e9cialis\u00e9e Suisse. Gestion, Ing\u00e9nierie, Sant\u00e9, Conservation-\u200brestauration.\",\"publisher\":{\"@id\":\"https:\/\/www.he-arc.ch\/en\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.he-arc.ch\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.he-arc.ch\/en\/#organization\",\"name\":\"Haute Ecole Arc\",\"url\":\"https:\/\/www.he-arc.ch\/en\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.he-arc.ch\/en\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/01\/logo-he-arc.svg\",\"contentUrl\":\"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/01\/logo-he-arc.svg\",\"width\":140,\"height\":42,\"caption\":\"Haute Ecole Arc\"},\"image\":{\"@id\":\"https:\/\/www.he-arc.ch\/en\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"CLEANLAB \u2013 Corrosion and cleaning of lacquered brasse - Haute-Ecole Arc","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/","og_locale":"en_US","og_type":"article","og_title":"CLEANLAB \u2013 Corrosion and cleaning of lacquered brasse - Haute-Ecole Arc","og_description":"OBJECTIVES Objects made of lacquered brass are widely represented in museum\u2019s collections. This technique was applied to various categories of artefacts such as scientific instruments and decorative bronze items, including horological and liturgical objects. The degradation of both the varnish and the metal alloy are a frequent problem from an esthetical point of view and [&hellip;]","og_url":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/","og_site_name":"Haute-Ecole Arc","article_modified_time":"2025-08-15T13:58:46+00:00","og_image":[{"width":793,"height":441,"url":"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/11\/COR-CLEANLAB_ProjetRAD.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/","url":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/","name":"CLEANLAB \u2013 Corrosion and cleaning of lacquered brasse - Haute-Ecole Arc","isPartOf":{"@id":"https:\/\/www.he-arc.ch\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#primaryimage"},"image":{"@id":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#primaryimage"},"thumbnailUrl":"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/11\/COR-CLEANLAB_ProjetRAD.jpg","datePublished":"2025-08-07T12:54:28+00:00","dateModified":"2025-08-15T13:58:46+00:00","breadcrumb":{"@id":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#primaryimage","url":"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/11\/COR-CLEANLAB_ProjetRAD.jpg","contentUrl":"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/11\/COR-CLEANLAB_ProjetRAD.jpg","width":793,"height":441},{"@type":"BreadcrumbList","@id":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/cleanlab-corrosion-and-cleaning-of-lacquered-brasse\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.he-arc.ch\/en\/"},{"@type":"ListItem","position":2,"name":"R&D projects","item":"https:\/\/www.he-arc.ch\/en\/rd-projects\/"},{"@type":"ListItem","position":3,"name":"CLEANLAB \u2013 Corrosion and cleaning of lacquered brasse"}]},{"@type":"WebSite","@id":"https:\/\/www.he-arc.ch\/en\/#website","url":"https:\/\/www.he-arc.ch\/en\/","name":"Haute-Ecole Arc","description":"Haute \u00e9cole sp\u00e9cialis\u00e9e Suisse. Gestion, Ing\u00e9nierie, Sant\u00e9, Conservation-\u200brestauration.","publisher":{"@id":"https:\/\/www.he-arc.ch\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.he-arc.ch\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.he-arc.ch\/en\/#organization","name":"Haute Ecole Arc","url":"https:\/\/www.he-arc.ch\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.he-arc.ch\/en\/#\/schema\/logo\/image\/","url":"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/01\/logo-he-arc.svg","contentUrl":"https:\/\/www.he-arc.ch\/wp-content\/uploads\/2022\/01\/logo-he-arc.svg","width":140,"height":42,"caption":"Haute Ecole Arc"},"image":{"@id":"https:\/\/www.he-arc.ch\/en\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/he-arc_project\/71055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/he-arc_project"}],"about":[{"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/types\/he-arc_project"}],"author":[{"embeddable":true,"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/users\/38"}],"version-history":[{"count":7,"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/he-arc_project\/71055\/revisions"}],"predecessor-version":[{"id":71287,"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/he-arc_project\/71055\/revisions\/71287"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/media\/39945"}],"wp:attachment":[{"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/media?parent=71055"}],"wp:term":[{"taxonomy":"he-arc_domain","embeddable":true,"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/he-arc_domain?post=71055"},{"taxonomy":"he-arc_project_skill","embeddable":true,"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/he-arc_project_skill?post=71055"},{"taxonomy":"he-arc_project_year","embeddable":true,"href":"https:\/\/www.he-arc.ch\/en\/wp-json\/wp\/v2\/he-arc_project_year?post=71055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}