A study on the thermal expansion characteristics of Alumina-zirconia nano-composite infiltrated ceramic / 华西口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the characteristics of thermal expansion of the alumina-zirconia nano-composite infiltrated ceramic.</p><p><b>METHODS</b>The thermal expansion coefficients of alumina-zirconia composite matrix, infiltrating glass and infiltrated ceramic were determined by various methods, respectively.</p><p><b>RESULTS</b>The coefficients of thermal expansion of composite matrix with 10 wt%, 20 wt% and 30 wt% zirconia were 7.607, 7.690 and 8.111 microns/(m. degree C) respectively. The thermal expansion coefficients of AZ-8 and AZ-10 infiltration glass were 6.867 and 7.333 microns/(m. degree C), respectively. The thermal expansion coefficient of infiltrated ceramic was 8.413 microns/(m. degree C).</p><p><b>CONCLUSION</b>The thermal expansion coefficients of the glass and composite matrix matched well. The thermal expansion coefficients of the alumina-zirconia nano-composite infiltrated ceramic and several common veneering porcelains matched well, too.</p>