采用正交实验法探讨了CaO-A1_2O_3-SiO_2系微晶玻璃的热处理工艺,通过分析各热处理工艺参数对微晶玻璃烧结体积密度、抗折强度、耐酸性和耐碱性的影响,找出了其最佳热处理工艺参数,并采用XRD和SEM分析了热处理后微晶玻璃的物相和形貌.结果表明,随核化时间的延长,微晶玻璃试样的抗折强度、体积密度和晶相含量逐渐增大;随核化温度的升高,微晶玻璃的耐腐蚀性逐渐增强.影响抗折强度、体积密度的主要因素是核化时间,影响耐酸、耐碱性的主要因素是核化温度.
The heat-treatment of the CaO-Al_2O_3-SiO_2 system glass-ceramics is investigated by cross experiment methods. The heat-treatment parameters are optimized via analyzing their influences on sintering flexural strength, bulk density, acidresistivity and alkali resistivity of glass-ceramics. The crystal phases and morphology are also investigated by XRD and SEM respectively. The results shows that the flexural strength, density and crystal content increased with raising nucleation time. The inoxidizability increased with raising nucleation temperature. The effect of bending strength and bulk density primary factor is nucleation time, and the primary effect factor of acid-proof and the kali-resistivity is the nucleation temperature.
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