Development of cordierite-based glass-ceramics by slip casting through selecting the appropriate sintering conditions
محل انتشار: فصلنامه سنتز و تفجوشی، دوره: 2، شماره: 2
سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 119
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شناسه ملی سند علمی:
JR_SYNSINT-2-2_007
تاریخ نمایه سازی: 14 آذر 1402
چکیده مقاله:
The present work aims to prepare a dense cordierite-based glass-ceramic through slip casting and consequent heat treatment procedures. In this regard, sintering conditions were considered as the key variables to improve the properties of the glass-ceramic. For this purpose, glass frit powder was prepared through melting oxide powders (in the system of SiO۲-Al۲O۳-TiO۲-K۲O-CaO-MgO). The mixed powders were then heat treated at ۱۴۵۰ °C for ۱ hour and quenched in water. The glass frit powder was slip cast using the appropriate dispersant. Sintering was carried out by one-step, two-step, and three-step procedures. Specimens were characterized in terms of various analysis techniques including dilatometry, X-ray diffractometry, scanning electron microscopy, and mechanical strength measurement. Among the examined specimens, the sample sintered by a three-step approach was considered the optimized one which attained zero porosity. According to the obtained results, cordierite crystals were observable in this glass-ceramic matrix. A low coefficient of thermal expansion and a low dielectric constant were observed for the optimized glass-ceramic sample. The obtained results confirmed that the homogenous distributions of crystalline phases are responsible for the appropriate and desirable properties of the prepared glass-ceramic.
کلیدواژه ها:
نویسندگان
Mohammad Javad Maleki
Ceramics Department, Materials and Energy Research Center (MERC), Karaj, Iran
Hudsa Majidian
Ceramics Department, Materials and Energy Research Center (MERC), Karaj, Iran
Sara Banijamali
Ceramics Department, Materials and Energy Research Center (MERC), Karaj, Iran
Mohammad Zakeri
Ceramics Department, Materials and Energy Research Center (MERC), Karaj, Iran