Thermal and physical properties of white-opaque sanitary glazes using Lampang pottery stone as raw materials

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Author list: Sirilar P., Srisukhumbowornchai N., Thanakijkasem P., Sirisoonthorn S., Klein G.

Publisher: Trans Tech Publications

Publication year: 2016

Volume number: 872

Start page: 118

End page: 122

Number of pages: 5

ISBN: 9783038357353

ISSN: 0255-5476

eISSN: 1662-9752

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988603470&doi=10.4028%2fwww.scientific.net%2fMSF.872.118&partnerID=40&md5=67580f4142502cb1e3de36715b73b492

Languages: English-Great Britain (EN-GB)

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Abstract

The aim of this work was to determine thermal and physical properties of white-opaque sanitary glazes. Lampang pottery stone was used to replace silica (G2) and feldspar (G3) in the commercial sanitary glaze (G1). All formulations of glazes developed from Seger formula calculation and the glaze slurry was prepared by wet milling, green glazing on commercial ceramic body and firing at 1200ฐC with heating rate of 3ฐC/min by using electric kiln. Melting characteristics, specular gloss, lightness, color, and thermal expansion behavior of all sanitary glazes were investigated. As a result, the glaze G2 was a good reflecting surface with high lightness value. Linear thermal expansion difference at 500ฐC between the glaze G2 and the commercial ceramic body was -0.015%. This glaze-body fit was, therefore, under small compression and more compatible to ceramic sanitary products. ฉ 2016 Trans Tech Publications, Switzerland.

Keywords

Glaze-body fit, Gloss, Lightness, Melting characteristic, Thermal expansion