| 고팽창 결정화 유리의 유약에 관한 연구 |
| 박용완, 강은태1, 박찬성, 전문덕 |
한양대학교
1경상대학교 |
| Studies on the Glaze for High Expansion Glass Ceramics |
|
|
|
|
|
|
|
| ABSTRACT |
|
A glass-ceramics material of composition %SiO_2$: 38.50, $Al_2O_3$: 26.00, $Na_2O$: 18.00, CaO: 6.00, MgO: 4.00, $TiO_2$: 7.50 was strengthened by coating a series of glazes$(SiO_2-B_2O_3-Al_2O_3-CaO-PbO-Na_2O-)$, which has lower thermal expansion coefficient than that of the glass-ceramics. The thermal expansion coefficient of the glazes ranges $80~90{times}10^{-7}$cm/cm/$^{circ}C$, whereas that of the glass-ceramics is $115{times}10^{-7}$cm/cm/$^{circ}C$. The glass-ceramics was identified to be composed of nepheline, carnegieite low form, and meta sodium silicate crystal by X-ray diffraction phase analysis. The glaze, having lower melting point and appropriate thermal expansion coefficient, was tried to be stable and good at secondary heat treatment. |
|
PDF Links
Full text via DOI 
Download Citation 
