Causes of defects in historical ceramic materials with Ca-rich body

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43928336" target="_blank" >RIV/60461373:22310/23:43928336 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22810/23:43928336

Result on the web

<a href="https://www2.irsm.cas.cz/materialy/cs_content/2023_doi/Dvorakova_CS_2023_0039.pdf" target="_blank" >https://www2.irsm.cas.cz/materialy/cs_content/2023_doi/Dvorakova_CS_2023_0039.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13168/cs.2023.0039" target="_blank" >10.13168/cs.2023.0039</a>

Result language

angličtina

Original language name

Causes of defects in historical ceramic materials with Ca-rich body

Original language description

The aim of the present work was to study and identify the causes and sources of defects in the glazes and decorations of archaeological ceramics containing a calcium component. As part of systematic archaeological research in the Hrad &amp; ccaron;any area, several reconstructable objects and some fragmentary sherds of archaeological ceramics with a relatively high calcium content were found. Seven objects of faience were rescued from the waste pits on the premises of the third courtyard of the Prague Castle, a flower pot was found in Lumbe garden, and creamware sherds were excavated from a waste pit between the Salm and Schwarzenberg palaces on Hrad &amp; ccaron;any Square. The first step of the research was the evaluation of ceramic bodies, glazes, and decorations using archaeometric methods. Subsequently, dilatometric measurements of cera-mic bodies and stress state calculations of ceramic body-glaze, or glaze-decor systems were used to identify the sources of defects observed on archaeological finds. Both primary and secondary defects were identified in all studied finds. Among the primary defects, pinholes and blisters predominated. As secondary defects, crazing, blackening, corrosion, delayed peeling, and mechanical abrasion were recognised. Thanks to the combination of X-ray and optical methods, together with the determination of the stress states of the two-and three-component systems, causes of secondary defects were described. The main source of these defects were calcium residues causing volume changes in the ceramic bodies.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20506 - Coating and films

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

CERAMICS-SILIKATY

ISSN

0862-5468

e-ISSN

1804-5847

Volume of the periodical

67

Issue of the periodical within the volume

3

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

16

Pages from-to

387-402

UT code for WoS article

001086065000001

EID of the result in the Scopus database

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