ZrO2对高硼硅玻璃高温粘度和表面张力的影响

高硼硅玻璃由于熔化温度高，对耐火材料侵蚀严重，ZrO2溶解到玻璃中后使其高温粘度和表面张力发生变化，是产生玻璃缺陷的重要原因之一。通过在母体玻璃中引入少量ZrO2，采用旋转粘度法测试玻璃的高温粘度，采用静滴法测试玻璃的高温表面张力。结果表明，随着含量的增加，ZrO2对玻璃在1530℃以上的粘度影响不大，但可使1530℃以下的粘度有较大提高。玻璃的高温表面张力随着ZrO2含量的增加单调递增，随着温度的升高而降低。

Effect of ZrO2 on Viscosity and Surface Tension of Borosilicate Glass

Due to the high melting temperature ,borosilicate glass erode refractory strongly .ZrO2 dissolved into the glass change viscosity and surface of mother glass , which also bring about many and various product defects .In this paper , a small amount of ZrO 2 were introduced into the mother glass .High temperature viscosity was tested by the rotating method and high temperature surface tension was tested by the sessile drop method .The results indicate that viscosity of the glass above 1530 ℃almost no change and viscosity of the glass below 1530 ℃ greatly increase with increasing ZrO 2 content .At same time , surface tension is increasing mono-tonically .Surface tension reduce as the temperature increases .