可切削渗透陶瓷玻璃料对不同堆积密度氧化铝基体的渗透

探讨了可切削渗透陶瓷 (Infiltration of Machinable- infiltrated- ceramic,MIC)渗透玻璃在不同堆积密度氧化铝基体中的渗透情况及渗透后复合体的颜色表达。在 110 0℃保温 2 h,将玻璃渗透到不同堆积密度的氧化铝基体中 ,分别测得其渗透深度和颜色参数。扫描电镜观察玻璃—氧化铝复合体断面。玻璃渗透深度的平方与氧化铝堆积密度有直线负相关关系 ,最小渗透深度为 3.0 92 m m。复合体的颜色系数与氧化铝堆积密度无相关性。渗透复合体在断裂过程中可见 :裂纹偏转、晶体拔出和穿晶断裂。本实验证实 MIC渗透玻璃的渗透性能达到临床要求。渗透后的复合体颜色稳定 ,强度可靠

Investigation of Machinable-infiltrated-ceramic Glass Infiltrating through the Aluminous Matrix

This investigation was amied at the infiltrative capability of the machinable-infiltrated-ceramic(MIC) glass and the color of the composite after the MIC glass infiltrated through the aluminous matrix with different packing densities. By heating the components to 1100 degrees C for 2 hours, the MIC glass was made to infiltrate through the aluminous matrix with different packing densities. We measured the infiltrative depth and the color parameter and observed the rupture surface of the composite by means of SEM. There was a linear relation between the square of infiltrative depth and the packing density of aluminous matrix. The minimal depth was 3.092 mm. No relationship was noted between the composite's color coefficient and the packing density of aluminous matrix. In the rupture process of the composite, crack deflexion, crystal evulsion, and rupture through crystal could be observed. This experiment proved that the infiltrative characters of MIC glass meet the clinical requirement, the composite's color is steady and the mechanical intensity is stable.