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Updated: Mar 22, 2026
High Temperature Fabrication of Nanostructured Yttria-Stabilized-Zirconia YSZ Scaffolds by In Situ Carbon Templating Xerogels
Published on: April 16, 2017
[Sintering behavior of tooth-like yttria-stabilized tetragonal zirconia polycrystal by adding rare-earth oxide]
Yan Gao1, Fu-qiang Zhang1, Jian-hua Gao2
1Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China.
Purpose:
To investigate the influence on the sintering densification, microstructure and transformation behavior of tooth-like yttria-stabilized tetragonal zirconia polycrystal by adding rare-earth oxide as colorants.
Methods:
Six kinds(S1,S2,S3,S4,S5,S6) of tooth-like yttria stabilized tetragonal zirconia polycrystal(Y-TZP)were made by introducing internal colorating technology, the relative density of sintered specimens was determined by the Archimedes method. Scanning electron microscope (SEM) was used to examine the surface morphology and determine the grain size. The phase identification of sintered samples was carried out by X-ray diffractometer.
Results:
The relative density of the six kinds of tooth-like yttria stabilized tetragonal zirconia polycrystal were over 98%, through SEM images of the cross-sectional surfaces, the grain size of the six kinds of sintered composites were observed in a wide range from 100 nm to 300 nm, a second phase was not detected in the grain boundaries. The diffraction peaks of the main phase were observed as tetragonal phase.
Conclusions:
Tooth-like yttria-stabilized tetragonal zirconia polycrystal was acquired with better mechanical property by adding rare-earth oxide as colorants, and was available for clinical application.
