| Title: |
Application of low-temperature plasma for the removal of copper chloride layers on bronze Wares |
| Authors: |
Ranran Jiao; Fuwei Sun; Jiaxing Li |
| Source: |
Heritage Science, Vol 11, Iss 1, Pp 1-11 (2023) |
| Publisher Information: |
SpringerOpen, 2023. |
| Publication Year: |
2023 |
| Collection: |
LCC:Fine Arts; LCC:Analytical chemistry |
| Subject Terms: |
Copper; Chloride; Low-temperature plasma; Radio frequency; Fine Arts; Analytical chemistry; QD71-142 |
| Description: |
Abstract Archaeological objects based on copper alloys (such as bronze wares) usually suffer from “bronze disease” that results from the existence of CuCl on the surfaces. The surface-coating Cu2(OH)3Cl can release Cl− and lead to further corrosion during the storage procedure. The central aim of the work is the verity the effectiveness of low-temperature radio-frequency (RF) plasma for the removal of CuCl and Cu2(OH)3Cl from the bronze wares. In this work, CuCl and Cu2(OH)3Cl patina were synthesized on copper by a simple solution method. The chemical and aesthetic features before and after plasma treatment were characterized using optical microscopy (OM), SEM-EDS, XRD, and XPS. The results show that Ar-H2 plasma could reduce the CuCl to Cu efficiently, which achieves pleasing esthetics as well as removes the chlorine (Cl atomic ratio decrease from 46.0 to 3.6%). For Cu2(OH)3Cl, the air plasma treatment exhibit better performance compared to the Ar-H2 plasma treatment, judging from the aesthetic effect and the removal effect of chlorine (Cl atomic ratio decrease from 14.8 to 3.3%). |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2050-7445 |
| Relation: |
https://doaj.org/toc/2050-7445 |
| DOI: |
10.1186/s40494-022-00839-7 |
| Access URL: |
https://doaj.org/article/2805bd28eb2f4bf1bb4e4db5d779119a |
| Accession Number: |
edsdoj.2805bd28eb2f4bf1bb4e4db5d779119a |
| Database: |
Directory of Open Access Journals |