Infiltration of Porous Zircon Preforms With Alumina Precursor (TECHNICAL NOTE)
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 18، شماره: 3
سال انتشار: 1384
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 152
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شناسه ملی سند علمی:
JR_IJE-18-3_008
تاریخ نمایه سازی: 20 اسفند 1400
چکیده مقاله:
A process is described which involves infiltration of aluminum nitrate into partially sintered (porous) zircon bodies. Infiltration kinetics were studied using infiltration curves with two distinct regions. The final infiltrated samples were sintered at ۱۶۰۰ °C for ۲ h and yielded specimens containing the tetragonal zirconia.The experimental results show that in spite of the similar porosity of the infiltrated preform and of pure zircon sintered at ۱۶۰۰ °C, the former has a higher flexural strength and fracture toughness due to the incorporation of the ZrO۲ particles and the elongated mullite grains resulting from the infiltration and subsequent heating of the preform.
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نویسندگان
T. Ebadzadeh
Ceramic Department, Materials and Energy Research Center