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A New Method for Measurement of the Vitrification Rate of Earthenware Texture by Scanning Electron Microscope

Published online by Cambridge University Press:  06 August 2013

Eun Jung Moon ,
Su Kyeong Kim ,
Min Su Han ,
Eun Woo Lee ,
Jun Su Heo  and
Han Hyoung Lee
Eun Jung Moon
Affiliation:
Conservation Science Division, National Research Institute of Cultural Heritage, 472 Munji-dong, Yuseong-gu, Daejeon 305-380, Korea
Su Kyeong Kim
Affiliation:
Conservation Science Division, National Research Institute of Cultural Heritage, 472 Munji-dong, Yuseong-gu, Daejeon 305-380, Korea
Min Su Han
Affiliation:
Conservation Science Division, National Research Institute of Cultural Heritage, 472 Munji-dong, Yuseong-gu, Daejeon 305-380, Korea
Eun Woo Lee
Affiliation:
Conservation Science Division, National Research Institute of Cultural Heritage, 472 Munji-dong, Yuseong-gu, Daejeon 305-380, Korea
Jun Su Heo
Affiliation:
Conservation Science Division, National Research Institute of Cultural Heritage, 472 Munji-dong, Yuseong-gu, Daejeon 305-380, Korea
Han Hyoung Lee*
Affiliation:
Conservation Science Division, National Research Institute of Cultural Heritage, 472 Munji-dong, Yuseong-gu, Daejeon 305-380, Korea
*
*Corresponding author. E-mail: lhh1025@hanmail.net
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Abstract

A new method for determining the vitrification rate of pottery depending on the firing temperature was devised using secondary electron images (SEI) of scanning electron microscope (SEM). Several tests were performed to establish the appropriate operating conditions of SEM and reproducibility as well as to examine the applicability of the method. The grayscale values converted from each pixel of SEI were used to determine the vitrification rate of pottery, which in our study were artificially fired specimens composed of three types of clay. A comparison between the vitrification rate value and appearance temperature of minerals shows that mullite formation starts at 1,100°C, during which the vitrification rate rapidly increases by over 10%. In consequence, the result presented here demonstrates that the new method can be applied to estimate the firing temperature of pottery.

Keywords

SEMpotteryvitrificationXRDfiring temperaturepixelgrayscale
Type
Research Article
Information
Microscopy and Microanalysis , Volume 19 , Supplement S5: IUMAS , August 2013 , pp. 162 - 166
Copyright
Copyright © Microscopy Society of America 2013 

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