Pore-free cordierite glass-ceramic was synthesized. The crystallization and sintering processes were studied. Certain properties of the cordierite glass-ceramic fabricated from magnesium-aluminum-silicate glass were determined. The best properties were exhibited by glass-ceramic material obtained with heat-treatment at first-stage temperature T₁ = 850°C and soaking time 𝜏₁ = 3 h and second-stage temperature in the range T₂ = 115 – 1350°C and soaking time 𝜏₂ = 1 – 5 h.

中文翻译：

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无线电工程用堇青石玻璃陶瓷制品

合成无孔堇青石玻璃陶瓷。研究了结晶和烧结过程。确定了由镁铝硅酸盐玻璃制成的堇青石玻璃陶瓷的某些性能。通过在第一阶段温度T ₁ = 850°C和均热时间= ₁ = 3 h以及第二阶段温度T ₂ = 115 – 1350°C范围内进行热处理获得的玻璃陶瓷材料表现出最佳性能。浸泡时间𝜏 ₂ = 1 – 5 h。