利用烧结法制备化学计量比和高Ba含量的两组BaO-Al2O3-SiO2(BAS)系微晶玻璃,采用等转化率法计算玻璃粉的活化能随析晶过程的变化,利用线性回归的方法确定最概然析晶机理函数,进而对比研究添加ZrO2和提高Ba含量对BAS系微晶玻璃析晶过程的影响.结果表明,4种成分的BAS系玻璃的最概然析晶机理函数均为SB(m,n)函数,析晶过程中存在自催化的相变机制.在化学计量比的BAS系玻璃中添加ZrO2或者提高Ba含量,对六方钡长石的析出表现为促进作用,并且随着温度的降低或者析晶过程的进行,促进效果更加明显.在高Ba含量的BAS系玻璃中添加ZrO2对六方钡长石的析出表现为抑制作用,并且随着温度的升高抑制效果更加明显.
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