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http://dx.doi.org/10.3740/MRSK.2004.14.7.505

Relationship between Surface Roughness and Crystal size of Li2O-Al2O3-SiO2(LAS) Glass-Ceramic System  

Kim Yu Jin (Department of Materials Science and Metallurgical Engineering, Sunchon National University)
Hwang Seong Jin (Department of Materials Science and Metallurgical Engineering, Sunchon National University)
Kim Hyung Sun (Department of Materials Science and Metallurgical Engineering, Sunchon National University)
Publication Information
Korean Journal of Materials Research / v.14, no.7, 2004 , pp. 505-510 More about this Journal
Abstract
The glass-ceramic based on LAS($Li_{2}O-Al_{2}O_3-SiO_{2}$) system was observed using SEM(Scanning Electric Microscopy) and AFM(Atomic Force Microscopy) and it was expected to get a correlation between the crystal size and the surface roughness through the result. At heat treatment conditions (the nucleation: $740\~800^{\circ}C$, the crystal growth: $900\~1150^{\circ}C$), the crystal size was increased from 72 to 450 nm so that the mean of surface roughness was also risen from 0.8 to 6.3 nm. Based on the results, the surface roughness of glass-ceramic is controlled by the factors, crystal size, crystallines, and the condition of heat treatment.
Keywords
Atomic force microscopy(AFM); Surface roughness; Glass-Ceramics;
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