| 열적, 화학적 강화에 의해 잔류응력이 형성된 유약층을 가진 도자기의 기계적 물성 |
| 김동환, 맹지헌, 한윤수, 김형태, 최성철1, 김형준 |
한국세라믹기술원 엔지니어링세라믹센터
1한양대학교 신소재공학과 |
| Mechanical Properties of Porcelain with Thermally and Chemically Induced Residual Stress on Glaze |
| Dong-Hwan Kim, Jee-Hun Maeng, Yoon Soo Han, Hyung-Tae Kim, Sung-Churl Choi1, Hyeong-Jun Kim |
Korea Institute of Ceramics Engineering & Technology
1Devision of Materials Science and Engineering, Hanyang University |
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| ABSTRACT |
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In this study, we measured the thermally and chemically induced residual stresses on glaze using the photoelastic method. Porcelain with thermally induced residual stress showed compressive stress of 49 MPa for thermal expansion mismatch and a locally fluctuated stress field over the glaze layer due to compensation of compressive stresses around pores. In the case of chemically strengthened porcelain, the compressive stress on the glaze was 151 MPa which was around 3 times higher than the stress on thermally strengthened glaze. The trend of fracture strength of thermally and chemically strengthened porcelains was coincident with that of the residual stress of porcelains. |
| Key words:
Photoelasticity, Glaze, Residual stress, Chemical strengthening |
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