Les vernis or sur les bronzes d’ameublement : acteurs, pratiques et marchés à Paris au XIXe siècle

Schröter, Julie

doi:10.4000/ephaistos.10679

Cited by 2 publications

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“…Brass was also used to produce decorative so-called "bronzes" and ornaments made of stamped rolled sheets. In this case, these "goldlacquers" served to both protect the metal and imitate the color of gilded objects [3][4][5].…”

Section: Introduction 1lacquered Brass Objectsmentioning

confidence: 99%

The Cleaning of Corroded Lacquered Brass with Complexing Agents: A Comparative Study

Schröter,

Truffa Giachet,

Cuvillier

et al. 2024

Heritage

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Lacquered brass objects are widely present in scientific and technical heritage collections. Localized atmospheric corrosion occurs on the metal when the coating fails to play its protective role. Although lacquered brass objects are not necessarily endangered by this phenomenon, the presence of dark, unpleasant corrosion spots alters the surface appearance, affecting the readability of the objects. Conservators are therefore frequently asked to clean these surfaces. We hereby present the results of a study conducted in the framework of the CleanLaB (Cleaning of Lacquered Brass) project at the Haute Ecole Arc of Neuchâtel for the cleaning of lacquered brass. This work investigates the effects of several gelled cleaning systems applied on artificially aged, lacquered brass samples to remove the corrosion products without affecting the integrity of the coating. The performance of complexing agents commonly used in conservation was compared on lacquered brass mock-ups coated with shellac resin by means of multiple non-invasive characterization and imaging techniques. The tests included conventional complexing agents like sodium citrate and disodium ethylenediaminetetraacetic acid, as well as a bio-originated system based on deferoxamine, a microbial metal chelator investigated as a green alternative in cleaning formulations.

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Section: Introduction 1lacquered Brass Objectsmentioning

confidence: 99%

The Cleaning of Corroded Lacquered Brass with Complexing Agents: A Comparative Study

Schröter,

Truffa Giachet,

Cuvillier

et al. 2024

Heritage

Self Cite

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“…However, it must be pointed out that shellac-based recipes for both copper-based decorative objects and technical instruments were often more complex. Additional binding media or plasticizers could be used to improve the coating properties as well as organic dyes to enhance the surface appearance of the metal [12][13][14]. Moreover, shellac -a natural animal-produced resin and wax mixturecomes in different grades and shades (seedlac, buttonlac, shellac in flakes…) and different processing and bleaching methods of shellac were developed and improved during the nineteenth century in France [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Investigating five totalizing counters manufactured by the Alphonse Darras company of the CNAM collections in Paris

et al. 2023

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The paper reports the study of five totalizing counters preserved in the collections of the CNAM (museum of the French National Conservatory of Arts and Crafts) in Paris. These artefacts are part of a corpus of over forty counters attributed to the Darras company founded by engineer Alphonse Darras (1860-1936). In the framework of the LacCA project at Haute Ecole Arc, Neuchâtel (Switzerland), dedicated to the characterization of lacquered copper-alloys, our attention was drawn to the different aspects of the object’s coatings. Lacquers were frequently applied to technical objects to both protect them from corrosion and provide an esthetical appearance. Five totalizing counters showing various typologies and surface colours were chosen from the set and explored by a non-invasive multi analytical approach. The comparative study – investigating lacquering processes and materials - contributes to the historical study of these artefacts.

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Les vernis or sur les bronzes d’ameublement : acteurs, pratiques et marchés à Paris au XIXe siècle

Cited by 2 publications

References 0 publications

The Cleaning of Corroded Lacquered Brass with Complexing Agents: A Comparative Study

The Cleaning of Corroded Lacquered Brass with Complexing Agents: A Comparative Study

Investigating five totalizing counters manufactured by the Alphonse Darras company of the CNAM collections in Paris

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