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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.121  No.1410 (February) (2013)  >  pp.200-204

Journal of the Ceramic Society of Japan
<<Previous article Vol.121  No.1410 (February) (2013)   pp.200 - 204 Next article>>

Evaluation of lightweight pottery using organic hallow microsphere

Jae-Hwan PEE1), Yuichi KOBAYASHI2), Gun-Hee KIM1), Yoo-Jin KIM1)
1) Korea Institute of Ceramic Engineering & Technology (KICET) 2) Aichi Institute of Technology

The purpose of this study is to develop lightweight pottery using organic hollow microsphere and to evaluate the mechanical properties of lightweight pottery. Spherical pores about 100 µm were formed in body, and total porosity increased proportionally with the addition of organic hollow microspheres. Many pores were isolated so that open porosity is extremely smaller than total porosity. A small amount addition of microspheres drastically degraded bending strength of pottery with slight decrease in density, indicating pores act as fracture flaws. On the other hand, a decrease in bulk density degraded fracture toughness moderately. In a wide range of porosity, a bending strength σ and a fracture toughness KIC of lightweight pottery could be expressed in σ = 70.4d1.57, and KIC = 1.27d1.54, respectively. Here, d equals to relative density.


Keyword:
Lightweight, Pore, Bending strength, Fracture toughness, Organic hallow microsphere

Received: August 29, 2012
Accepted: November 05, 2012 , Published online: February 01, 2013
Copyright © 2013 The Ceramic Society of Japan

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