Carbonate and silicate phase reactions during ceramic firing

Cultrone, Giuseppe; Rodríguez-Navarro, Carlos; Sebastián, Eduardo; Cazalla, Olga; Torre, María José de la

doi:10.1127/0935-1221/2001/0013-0621

Cited by 504 publications

(361 citation statements)

References 24 publications

Supporting

Mentioning

319

Contrasting

Unclassified

Order By: Relevance

“…The decrease of microcline started at 900 °C. Between 1000-1100 °C, microcline disappeared in agreement with the results of Cultrone et al [28]. Mullite appeared between 1000-1100 °C, in accordance with the literature [25,27,[29][30][31][32][33][34].…”

Section: Ceramicssupporting

confidence: 92%

Characterization of some archaeological ceramics and clay samples from Zamala - Far-northern part of Cameroon (West Central Africa)

et al. 2017

View full text Add to dashboard Cite

Seventeen ceramics samples (515±95 BP, about 580 years old) and two clay raw materials from Zamala (Far-northern, Cameroon) were characterized by X-ray diffraction (XRD), thermal analysis (DTA/TG) and X-ray fluorescence spectroscopy. The aim of the work was the deduction of the production technology and provenance of these ceramics. With the exception of one sample the analysed ceramics formed a homogeneous chemical and mineralogical group. The observed mineralogical phases were quartz, mica (biotite), potassium feldspar (microcline) and plagioclase (albite and oligoclase). The XRD study of two local clays yielded the presence of quartz, kaolinite, mica, feldspar and plagioclase. The presence of the broad endothermic peak in the DTA/TG curves of the clays and its absence in the curves of the ceramics indicated that the firing temperature of the ceramics was above 550-600 °C, which is the temperature of the kaolinite-metakaolinite transformation. The firing experiments of the clay between 400-1200 °C in oxidizing atmosphere showed that mica disappeared above 900 °C. Therefore, the firing temperature of the sherds should have been between 600-900 °C. The chemical correlation between ceramics and local clay materials pointed out to a local production of these ceramics. Keywords: Zamala, Cameroon, archaeological ceramics, clays, characterization, production technology, provenance. Resumo Dezessete amostras de cerâmica (515±95 AP, cerca de 1435 d.C.) e duas argilas de Zamala (Extremo Norte, Camarões) foram caracterizadas por difração de raios X (DRX), análise térmica (DTA/TG) e espectroscopia de fluorescência de raios X. O objetivo do trabalho foi a dedução da tecnologia de produção e proveniência dessas cerâmicas. Com exceção de uma amostra, as cerâmicas analisadas formaram um grupo químico e mineralógico homogêneo. As fases mineralógicas observadas foram quartzo, mica (biotita), feldspato de potássio (microclínio) e plagioclásio (albita e oligoclásio

show abstract

Section: Ceramicssupporting

confidence: 92%

Characterization of some archaeological ceramics and clay samples from Zamala - Far-northern part of Cameroon (West Central Africa)

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The absence of illite and the presence of gehlenite, wollastonite and, in a lower extent, anorthite and diopside in the samples is a consequence of the reactions occurring when calcium or magnesium-rich clays are fired above 900ºC. 27,42,43,45,47 Because gehlenite starts to be developed from 800ºC, 48 its coexistence with illite, micas and calcite on both Tarraconensian sherds (Fig. 4e-f), suggests firing temperatures of around 800ºC.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 93%

“…4c) which may denote firing temperatures above 900ºC. 27,29,[44][45][46] However, as was mentioned before, in this case diopside seems to come from the raw material and not developed during firing. The absence of illite and the presence of gehlenite, wollastonite and, in a lower extent, anorthite and diopside in the samples is a consequence of the reactions occurring when calcium or magnesium-rich clays are fired above 900ºC.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Archaeological ceramic amphorae from underwater marine environments: Influence of firing temperature on salt crystallization decay

López-Arce

Zornoza-Indart

Gomez-Villalba

et al. 2013

Journal of the European Ceramic Society

View full text Add to dashboard Cite

Non-desalinated and desalinated fragments of Iberian, Italic and Tarraconensian amphorae sherds, found in different underwater marine environments, were compared to determine both their state of conservation and the decay caused by salt crystallization. Polarizing light and fluorescence optical microscopy, scanning electron microscopy coupled to energy dispersive X-ray spectroscopy, X-ray diffraction, ion chromatography and mercury intrusion porosimetry tests were conducted on the samples. Non-desalinated samples or samples in which desalination was not wholly effective exhibit a variety of signs of degradation, especially in those samples fired at lower firing temperature. Sherds fired at higher temperatures have lower surface area and less connected porosity, which entail a lower absorption of soluble salts containing water and eventually less decay. The composition and texture reached with the firing temperature is a key factor on salt crystallization decay and hence on the durability of these artifacts. This should be taken into account during desalination procedures that have to be optimized in order to be successful.

show abstract

“…There are some detailed papers [12,13] about firing temperature determination based on approximate amounts of carbonates implicated in ceramic material. Unfortunately the analyzed samples probably contain only trace amounts of carbonates and this method cannot be used in the current research.…”

Section: Resultsmentioning

confidence: 99%

“…The descending amount of illite may indicate the increase of firing temperature (decomposition temperature of illite 825-900°C [11,12]). This assumption may be true if raw materials for all analyzed samples were taken from one site.…”

Section: Resultsmentioning

confidence: 99%

XRD and SEM Studies of Archaeological Stove Tile Ceramics of Turaida Castle

Vecstaudža

Jakovļevs

Bērziņa-Cimdiņa

et al. 2014

Material Science and Applied Chemistry

View full text Add to dashboard Cite

Abstract. Stove tile ceramics from Turaida archaeological site were characterized for their mineral and chemical composition. Mineral characteristics of ancient ceramics were determined with X-ray diffractometer. Chemical composition and micromorphology of ceramics and glazes were determined with scanning electron microscope (SEM) with energy dispersive Xray spectrometer (EDS) unit. The conducted analyzes showed similarity with Latvian clay, suggesting that these stove tiles ceramics are of local origin and production.

show abstract

Carbonate and silicate phase reactions during ceramic firing

Cited by 504 publications

References 24 publications

Characterization of some archaeological ceramics and clay samples from Zamala - Far-northern part of Cameroon (West Central Africa)

Characterization of some archaeological ceramics and clay samples from Zamala - Far-northern part of Cameroon (West Central Africa)

Archaeological ceramic amphorae from underwater marine environments: Influence of firing temperature on salt crystallization decay

XRD and SEM Studies of Archaeological Stove Tile Ceramics of Turaida Castle

Contact Info

Product

Resources

About