Computer Curve-Fitting of Crystallization Peak of Amorphous <TEX>$Pb(Fe_{2/3}W_{1/3})O_3$</TEX> Ceramics

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J. Korean Ceram. Soc. > Volume 31(10); 1994 > Article

Journal of the Korean Ceramic Society 1994;31(10): 1202.

비정질 $Pb(Fe_{2/3}W_{1/3})O_3$ 결정화 피크의 컴퓨터 합성

김남경

경북대학교 무기재료공학과

Computer Curve-Fitting of Crystallization Peak of Amorphous $Pb(Fe_{2/3}W_{1/3})O_3$ Ceramics

ABSTRACT

On heating amorphous Pb(Fe2/3W1/3)O3 ceramics, glass transition occurred at 35$0^{circ}C$, crystallization at 394~420, 485~550 and 540~571$^{circ}C$ (depending on the heating rates of 2.5~8$0^{circ}C$/min), phase transformation at 680 and 73$0^{circ}C$, and melting at 935$^{circ}C$. A curve-fitting computer program was made using FORTRAN, based on a kinetic equation. Reconstructed thermograms (using the program) turned out to be very close to the measured DSC results for all the heating rates, with average deviation of only 4% at maximum.