Role of iron-rich clays on sintering of porcelain stoneware tiles

Porcelain stoneware traditionally contains low Fe 2 O 3 (<1 wt%), limiting research on iron's effects beyond coloration to date. However, recent changes in the supply chain induced a shift towards resource efficiency and circular economy, which led to body formulations with Fe 2 O 3 up to 2.5 wt%. This study investigates the impact of iron-rich clays on the firing behaviour of porcelain stoneware, focusing on sintering processes, Fe speciation, and physical properties of the vitreous phase. Results show that red clays influence vitrification paths and maximum densification temperature, as well as composition and properties of the melt. This occurs not only because the relatively high iron percentage (up to 1.7 wt%), but for a set of factors, like the overall mineralogical and chemical composition of batches. Iron turns to be crucial for the stability of ceramic bodies at high temperatures, since Fe 3+ can partially reduce to Fe 2+ , releasing gases and contributing to bloating phenomena.

Authors

Institutions

Publication Details

Journal
Journal of the European Ceramic Society
Published
2024-09-26
DOI
https://doi.org/10.1016/j.jeurceramsoc.2024.116947
Citations
10
Primary Topic
Recycling and utilization of industrial and municipal waste in materials production
Type
article
Field-Weighted Citation Impact
2.65

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Role of iron-rich clays on sintering of porcelain stoneware tiles

Riccardo Fantini, Alessandro Francesco Gualtieri, Leonardo Casini, Chiara Zanelli et al.
10 citations
Journal of the European Ceramic Society
Recycling and utilization of industrial and municipal waste in materials production
2.65
article

Role of iron-rich clays on sintering of porcelain stoneware tiles

Riccardo Fantini, Alessandro Francesco Gualtieri, Leonardo Casini, Chiara Zanelli, Luca Nodari, Sonia Conte, Michele Dondi, Rossella Arletti, Chiara Molinari, Daniele Giordano, Massimo Sisti
article en
10 citations

Abstract

Porcelain stoneware traditionally contains low Fe 2 O 3 (<1 wt%), limiting research on iron's effects beyond coloration to date. However, recent changes in the supply chain induced a shift towards resource efficiency and circular economy, which led to body formulations with Fe 2 O 3 up to 2.5 wt%. This study investigates the impact of iron-rich clays on the firing behaviour of porcelain stoneware, focusing on sintering processes, Fe speciation, and physical properties of the vitreous phase. Results show that red clays influence vitrification paths and maximum densification temperature, as well as composition and properties of the melt. This occurs not only because the relatively high iron percentage (up to 1.7 wt%), but for a set of factors, like the overall mineralogical and chemical composition of batches. Iron turns to be crucial for the stability of ceramic bodies at high temperatures, since Fe 3+ can partially reduce to Fe 2+ , releasing gases and contributing to bloating phenomena.

Journal of the European Ceramic SocietyVol. 45(2)
University of Modena and Reggio Emilia (IT), Institute of Science and Technology for Ceramics (IT), Institute of Condensed Matter Chemistry and Technologies for Energy (IT), University of Turin (IT)
European Commission
Openalex Percentile: Top 11%
Recycling and utilization of industrial and municipal waste in materials production
2.65
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.