Glaze characterization of the glazed pottery from the medieval workshop of Vega (Burgos, Spain)
Sixteen glazes on medieval (14th–16th century AD) pottery fragments from Vega pottery workshop (Burgos, Spain) were characterized to investigate the production technology. To this end, Raman spectroscopy and scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDX) wer...
| Authors: | ; ; ; ; ; |
|---|---|
| Format: | Article |
| Publication date: | 2021 |
| Country: | España |
| Institution: | Universidad del País Vasco |
| Repository: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/64868 |
| Online Access: | http://hdl.handle.net/10810/64868 |
| Access Level: | Open access |
| Keyword: | firing temperatures lead glazes polymerization index Raman spectrsocopy |
| _version_ | 1878730634127474688 |
|---|---|
| author | Alonso Olazabal, Ainhoa |
| author2 | Ortega Cuesta, Luis Ángel Zuluaga Ibargallartu, María Cruz Alonso Fernández, Carmen Jiménez Echevarría, Javier Sarmiento Romayor, Alfredo |
| author2_role | author author author author author |
| author_browse | Alonso Fernández, Carmen Alonso Olazabal, Ainhoa Jiménez Echevarría, Javier Ortega Cuesta, Luis Ángel Sarmiento Romayor, Alfredo Zuluaga Ibargallartu, María Cruz |
| author_facet | Alonso Olazabal, Ainhoa Ortega Cuesta, Luis Ángel Zuluaga Ibargallartu, María Cruz Alonso Fernández, Carmen Jiménez Echevarría, Javier Sarmiento Romayor, Alfredo |
| author_role | author |
| collection | Addi. Archivo Digital para la Docencia y la Investigación |
| description | Sixteen glazes on medieval (14th–16th century AD) pottery fragments from Vega pottery workshop (Burgos, Spain) were characterized to investigate the production technology. To this end, Raman spectroscopy and scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDX) were used. The studied glaze samples correspond to fragments of high-quality glazed ware used by the wealthiest society in the city of Burgos. The most representative types of glazes, corresponding to honey-marble, honey-yellow, bright light green, and dark green types, were analysed. Raman spectroscopy shows lead was used as a fluxing agent in glaze production. SEMEDX analysis confirms the use of lead oxide and evidences that most of the samples underwent at least two firing processes. No Raman signals of crystalline phases were detected on either glaze surfaces or glaze thin-sections. The exception is the single firing of dark green glazes, which show pseudobrookite and rutile at the clay body/glaze interface measured in thin section. No colouring crystalline phases were identified by Raman spectroscopy either. However, SEM-EDX shows iron was the most-used colouring agent whereas copper was used for bright light green glazes. The polymerization index (Ip) values were used to estimate the firing temperatures. The polymerization index values are typically low for lead glazes and indicate firing temperatures below 700 C. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_203f875d7fe3e80c157962a6ff89052d |
| institution | Universidad del País Vasco |
| instname_str | Universidad del País Vasco |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:addi.ehu.eus:10810/64868 |
| publishDate | 2021 |
| publishDateSort | 2021 |
| publisher | John Wiley & Sons |
| publisherStr | John Wiley & Sons |
| reponame_str | Addi. Archivo Digital para la Docencia y la Investigación |
| spelling | Glaze characterization of the glazed pottery from the medieval workshop of Vega (Burgos, Spain) Alonso Olazabal, Ainhoa Ortega Cuesta, Luis Ángel Zuluaga Ibargallartu, María Cruz Alonso Fernández, Carmen Jiménez Echevarría, Javier Sarmiento Romayor, Alfredo firing temperatures lead glazes polymerization index Raman spectrsocopy Sixteen glazes on medieval (14th–16th century AD) pottery fragments from Vega pottery workshop (Burgos, Spain) were characterized to investigate the production technology. To this end, Raman spectroscopy and scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDX) were used. The studied glaze samples correspond to fragments of high-quality glazed ware used by the wealthiest society in the city of Burgos. The most representative types of glazes, corresponding to honey-marble, honey-yellow, bright light green, and dark green types, were analysed. Raman spectroscopy shows lead was used as a fluxing agent in glaze production. SEMEDX analysis confirms the use of lead oxide and evidences that most of the samples underwent at least two firing processes. No Raman signals of crystalline phases were detected on either glaze surfaces or glaze thin-sections. The exception is the single firing of dark green glazes, which show pseudobrookite and rutile at the clay body/glaze interface measured in thin section. No colouring crystalline phases were identified by Raman spectroscopy either. However, SEM-EDX shows iron was the most-used colouring agent whereas copper was used for bright light green glazes. The polymerization index (Ip) values were used to estimate the firing temperatures. The polymerization index values are typically low for lead glazes and indicate firing temperatures below 700 C. This study was partially supported by the IT1193-19 Research Group of the Basque Country Government and by Cronos S.C. (Burgos) John Wiley & Sons http://hdl.handle.net/10810/64868 |
| spellingShingle | Glaze characterization of the glazed pottery from the medieval workshop of Vega (Burgos, Spain) Alonso Olazabal, Ainhoa firing temperatures lead glazes polymerization index Raman spectrsocopy |
| title | Glaze characterization of the glazed pottery from the medieval workshop of Vega (Burgos, Spain) |
| title_full | Glaze characterization of the glazed pottery from the medieval workshop of Vega (Burgos, Spain) |
| title_fullStr | Glaze characterization of the glazed pottery from the medieval workshop of Vega (Burgos, Spain) |
| title_full_unstemmed | Glaze characterization of the glazed pottery from the medieval workshop of Vega (Burgos, Spain) |
| title_short | Glaze characterization of the glazed pottery from the medieval workshop of Vega (Burgos, Spain) |
| title_sort | Glaze characterization of the glazed pottery from the medieval workshop of Vega (Burgos, Spain) |
| topic | firing temperatures lead glazes polymerization index Raman spectrsocopy |
| topic_facet | firing temperatures lead glazes polymerization index Raman spectrsocopy |
| url | http://hdl.handle.net/10810/64868 |