[A study on the thermal expansion characteristics of Alumina-zirconia nano-composite infiltrated ceramic].
OBJECTIVE
To study the characteristics of thermal expansion of the alumina-zirconia nano-composite infiltrated ceramic.


METHODS
The thermal expansion coefficients of alumina-zirconia composite matrix, infiltrating glass and infiltrated ceramic were determined by various methods, respectively.


RESULTS
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).


CONCLUSIONS
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.
Deng
Xia
X
Key Lab. for Oral Biomedical Engineering Ministry of Education, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
Cen
Yuankun
Y
Chen
Yongping
Y
D000537:Aluminum Oxide / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry; D003776:Dental Porcelain / Q000737:chemistry*; D003799:Dental Stress Analysis; D004055:Differential Thermal Analysis; D006244:Hardness; D006358:Hot Temperature; D008422:Materials Testing; D016876:Metal Ceramic Alloys / Q000737:chemistry; D036103:Nanotechnology; D013314:Stress, Mechanical; D015040:Zirconium / Q000737:chemistry*
D003764:Dental Materials; D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; C070870:In-Ceram; D015040:Zirconium; D000537:Aluminum Oxide; C028541:zirconium oxide