Possibility of Fabricating Transparent Glass-Ceramics by Sintering Route

• Main Authors: Shih-Hsien Chen, 陳世憲
• Other Authors: Jiin-Jyh Shyu
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/07869183100069077029

碩士 === 大同大學 === 材料工程研究所 === 91 === This Subject of research to estimate possibility of fabricating MgO- ZnO- Al2O3- SiO2 transparent glass-ceramics by sintering route. Experiment inside make use of and change glass composition, heating rate,isothemmal time , nucleation condition and corrosion powder etc. method come and develop the glass it burn the knot. This experiment makes use of and burn the glass ceramics that knot method manufacture out, almost already nothing bore (bore rate< 5%). Crystallize are spinel (ZnAl2O4) and ZrO2, and sintering glass ceramics like casting glass ceramics. Crystalline measure also like cast glass ceramics and crystalline grain path( 14~ 64 nm) like cast glass ceramics, but however can't transparent. Can't the reason of transparent possibility for original powder grain interface imply quality impurities (the for example ball whet hour sneak into), here place easy produce the large nucleatio and crystallize, outcome to produce the grain-grain interface in glass ceramics. The interface of grain-grain, its size~ primitive glass grain radius( 1~ 3 μ m), may be the reason which the glass ceramics can not transparent.