scholarly journals Development on the Porcelain Body of the Lower Firing Temperature

1984 ◽  
Vol 92 (1061) ◽  
pp. 52-59
Author(s):  
Kanzi IMAI ◽  
Yoshizumi ISOMATSU ◽  
Kaoru ASAMI
Keyword(s):  
Firing Temperature ◽  
Porcelain Body

scholarly journals Estimating the reduction of the firing temperature produced by the addition of energetic fluxes in porcelain tiles through the Fluegel’s model

Cerâmica ◽  
2019 ◽  
Vol 65 (376) ◽  
pp. 605-610
Author(s):  
F. Contartesi ◽  
F. G. Melchiades ◽  
A. O. Boschi
Keyword(s):  
Chemical Composition ◽  
Firing Temperature ◽  
Porcelain Body ◽  
Environmental Benefits ◽  
Vitreous Phase ◽  
Densification Process ◽  
Limit Values ◽  
Initial Hypothesis ◽  
Porcelain Tiles ◽  
Porcelain Tile

Abstract Reducing the firing temperature and accelerating the densification process bring economic and environmental benefits. This study used Fluegel’s viscosity model, developed for glasses, to estimate the decrease of the firing temperature produced by the introduction of energetic fluxes in a porcelain body. The experimental results confirmed the prediction of the model, a 30 ºC reduction in the temperature, for the addition of wollastonite. However, for the addition of spodumene, the reduction was slightly higher than the predicted. These results suggested that Fluegel’s model may be used to estimate the effects of the introduction of energetic fluxes in porcelain tile compositions. However, the predictions should be seen as a general orientation. Among the limitations of the model were the extrapolation of limit values established by the model for the composition and, above all, the initial hypothesis that the chemical composition of the vitreous phase in porcelain tiles is constant.

scholarly journals Effect of Particle Size of Quartz on Bending Strength of Porcelain

1970 ◽  
Vol 43 (4) ◽  
pp. 537-544 ◽  
Author(s):  
Sonjida Mustafi ◽  
Mainul Ahsan ◽  
AH Dewan
Keyword(s):  
Particle Size ◽  
Bulk Density ◽  
Firing Temperature ◽  
Bending Strength ◽  
Ceramic Body ◽  
Porcelain Body ◽  
Grain Sizes ◽  
Fine Quartz ◽  
Effect Of Particle Size ◽  
Quartz Grains

The bending strength of porcelain body has been experimentally studied because of its economic importance in ceramic industry. The maximum bending strength is obtained in the < 44μ particle sized quartz containing porcelain at 1300°C. The distribution of closed pores, their geometric shapes and possible link with each other control the bending strength of the ceramic body. The presence of unmelted fine quartz grains in the ceramic body also increases the bending strength. It has been found that the bending strength increases with increasing bulk density of the ceramic bodies and the firing temperature up to 1300°C, but at temperature above 1300°C, the bending strength decreases due to bloating of isolated pores and the disappearance of quartz, which are also associated with a decrease in bulk density. The purpose of this study is to investigate on the differential changes of bending strength of porcelain bodies upon using quartz of various grain sizes at different firing temperatures. Key Words: Particle size, Quartz, Bending strength, Firing temperature and bulk density.    doi: 10.3329/bjsir.v43i4.2244 Bangladesh J. Sci. Ind. Res. 43(4), 537-544, 2008

Resistance to Synthetic Seawater Aggression of Clay Ceramics Incorporated with an Ornamental Stone Residue

2014 ◽  
Vol 798-799 ◽  
pp. 269-274 ◽  
Author(s):  
Gustavo de Castro Xavier ◽  
Jonas Alexandre ◽  
Paulo César de Almeida Maia ◽  
Fernando Saboya Albuquerque ◽  
Leonardo Gonçalves Pedroti ◽  
...  
Keyword(s):  
Firing Temperature ◽  
Standard Procedure ◽  
Degradation Process ◽  
Ceramic Materials ◽  
Linear Shrinkage ◽  
Synthetic Seawater ◽  
Internal Expansion ◽  
Ornamental Stone ◽  
Clay Ceramics ◽  
Chloride Salts

Clay ceramic materials exposed to a marine environment may be subjected to complete degradation due to the presence of chloride salts in the air. The exposition allows the chloride to penetrate in structural pores causing an internal expansion, which eventually split the ceramic apart. In open air, the solar radiation as well as the rain and wind contribute to accelerate the degradation process. In the present work the laboratory assisted degradation of clay ceramics incorporated with a granite residue from ornamental stone processing was evaluated by synthetic seawater aggression according to standard procedure. The amount of incorporated residues, up to 10 wt % and the ceramic firing temperature, up to 900°C, were variable conditions statistically analyzed by factorial planning. Degradation wetting-drying tests were conducted up to 6 months. The results showed that the linear shrinkage of the residue-free ceramics do not stabilize during the test period for any firing temperature. By contrast, the residue-incorporated ceramics tend to stabilize after 4 months. In addition, a decrease in water absorption and flexural strength was observed in same speciemens.

Impact of firing temperature on fire-through metal contacts to P-doped (n) and B-doped (p) poly-Si

2021 ◽  
Vol 230 ◽  
pp. 111217
Author(s):  
Pradeep Padhamnath ◽  
Ankit Khanna ◽  
Naomi Nandakumar ◽  
Armin G. Aberle ◽  
Shubham Duttagupta
Keyword(s):  
Firing Temperature ◽  
Metal Contacts

scholarly journals Mineralogical Characterization and Firing Temperature Delineation on Minoan Pottery, Focusing on the Application of Micro-Raman Spectroscopy

Heritage ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 2652-2664 ◽  
Author(s):  
E. Grammatikakis ◽  
Kyriakidis ◽  
D. Demadis ◽  
Cabeza Diaz ◽  
Leon-Reina
Keyword(s):  
Bronze Age ◽  
Firing Temperature ◽  
Raw Materials ◽  
Morphological Characteristics ◽  
Ceramic Technology ◽  
Phase Identification ◽  
Mineralogical Characterization ◽  
Analytical Protocol ◽  
Crucial Information ◽  
Analytical Tools

Ceramic objects in whole or in fragments usually account for the majority of findings in an archaeological excavation. Thus, through examination of the values these items bear, it is possible to extract important information regarding raw materials provenance and ceramic technology. For this purpose, either traditional examination protocols could be followed, focusing on the macroscopic/morphological characteristics of the ancient object, or more sophisticated physicochemical techniques are employed. Nevertheless, there are cases where, due to the uniqueness and the significance of an object of archaeological value, sampling is impossible. Then, the available analytical tools are extremely limited, especially when molecular information and mineral phase identification is required. In this context, the results acquired from a multiphase clay ceramic dated on Early Neopalatioal period ΜΜΙΙΙΑLMIA (1750 B.C.E.–1490 B.C.E.), from the Minoan Bronze Age site at Philioremos (Crete, Greece) through the application of Raman confocal spectroscopy, a nondestructive/ noninvasive method are reported. The spectroscopic results are confirmed through the application of Xray microdiffraction and scanning electron microscopy coupled with energy dispersive Xray spectrometry. Moreover, it is demonstrated how it is made possible through the application of microRaman (μRaman) spectroscopy to examine and collect crucial information from very small inclusions in the ceramic fabric. The aim of this approach is to develop an analytical protocol based on μRaman spectroscopy, for extracting firing temperature information from other ceramic finds (figurines) where due to their uniqueness sampling and analyses through other techniques is not possible. This information can lead to dating but also to firing kiln technology extrapolations that are very significant in archaeology.

Proton induced X-ray emission (PIXE) analysis of sources of porcelain body of Ru Guan and Jun Guan porcelains

2006 ◽  
Vol 49 (4) ◽  
pp. 411-420 ◽  
Author(s):  
Guoxia Li ◽  
Weijuan Zhao ◽  
Rongwu Li ◽  
Hongwei Sun ◽  
Min Guo ◽  
...  
Keyword(s):  
Porcelain Body ◽  
Pixe Analysis ◽  
X Ray

Estimation of Firing Temperature and Compositional Variability of Archaeological Pottery by Differential Scanning Calorimetry

2004 ◽  
Vol 852 ◽  
Author(s):  
A. Giordana ◽  
E. Peacock ◽  
M. McCarthy ◽  
K. Guilbeau ◽  
P. Jacobs ◽  
...  
Keyword(s):  
Firing Temperature ◽  
Thermal Characterization ◽  
Small Sample ◽  
Scanning Calorimetry ◽  
Blind Test ◽  
Vitrification Temperature ◽  
Archaeological Pottery ◽  
Digital Scanning ◽  
Different Temperatures ◽  
Upper Estimate

ABSTRACTDigital Scanning Calorimetry (DSC), a thermal characterization technique, can be used to rapidly obtain a rough upper estimate of the firing temperature of archaeological pottery as well as an indication of its composition. The technique involves heating a small sample (10–20 mg) of ground ceramic above the vitrification temperature, cooling and reheating. The curves of the two heating cycles are then compared. The validity of the technique was evaluated by a blind test in which 35 tiles fired at different temperatures were analyzed without knowing their firing point, and by analysis of archaeological pottery samples assumed to be local or imported based upon stylistic criteria.

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