The traditional ceramic industrial production, for most of its applications, i.e. Ceramic Tiles, Heavy Clay Products, Tableware and Sanitaryware, is often affected by the formation, during the firing process, of a dark color core, normally named “Black Core”, that can represent an aesthetical and technological problem. The true nature of this defect was never clearly stated, but it is known to be due to the presence of chromophores, like Iron, and organic or reducing materials, combined with a lack of permeability of the unfired body. A novel, mullti-approach study was made by XRD, XRF, SEM-EDS, FTIR and Mossbauer Spectroscopy, and by micro Raman spectroscopy and mapping, with the aim to clarify the morphology, the composition and the Iron oxidation state of this inner layer. Possible solutions were suggested, by the addition to the recipe of proper additives.
Study of Black Core, ceramic tile’s defect, by a multi technique approach / Ferrari, Giorgia; Zannini, Paolo; Baraldi, Cecilia. - (2014). (Intervento presentato al convegno ICORS 2014 - XXIV International Congress on Raman Spectroscopy tenutosi a Jena - Germany nel 10-15 agosto 2014).
Study of Black Core, ceramic tile’s defect, by a multi technique approach
FERRARI, GIORGIA;ZANNINI, Paolo;BARALDI, Cecilia
2014
Abstract
The traditional ceramic industrial production, for most of its applications, i.e. Ceramic Tiles, Heavy Clay Products, Tableware and Sanitaryware, is often affected by the formation, during the firing process, of a dark color core, normally named “Black Core”, that can represent an aesthetical and technological problem. The true nature of this defect was never clearly stated, but it is known to be due to the presence of chromophores, like Iron, and organic or reducing materials, combined with a lack of permeability of the unfired body. A novel, mullti-approach study was made by XRD, XRF, SEM-EDS, FTIR and Mossbauer Spectroscopy, and by micro Raman spectroscopy and mapping, with the aim to clarify the morphology, the composition and the Iron oxidation state of this inner layer. Possible solutions were suggested, by the addition to the recipe of proper additives.File | Dimensione | Formato | |
---|---|---|---|
Study of Black Core.pdf
Open access
Descrizione: Presentazione
Tipologia:
Altro
Dimensione
1.04 MB
Formato
Adobe PDF
|
1.04 MB | Adobe PDF | Visualizza/Apri |
ICORS_Black Core_abstract.pdf
Open access
Tipologia:
Abstract
Dimensione
52.63 kB
Formato
Adobe PDF
|
52.63 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris