title: Exploring the optimal pre-sintering temperature on compressive strength and anti-fatigue property of graded zirconia-based glass/zirconia structure.
abstract: To explore the optimal pre-sintering temperature for graded glass/zirconia material, glass/zirconia specimens were prepared and pre-sintered at 900, 1,000 and 1,100°C respectively, glass infiltration and densification at 1,450°C. Monolith Y-TZP specimens were sintered at 1,450°C. Nanoindentation was used to test Young's modulus and Hardness. Compressive strength test and cycling fatigue test were conducted. Nanoindentation test showed graded change of Young's modulus in glass/zirconia structure. The compressive strength and the number of cycles to failure of specimens pre-sintered at 1,000°C were significantly higher than those of Y-TZP and the specimens pre-sintered at 900 and 1,000°C (p<0.05). It is concluded that when the pre-sintering temperature is set at 1,000°C, the graded glass/zirconia structure exhibits the most optimal compressive strength and anti-fatigue property.
authors.affiliation: Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology.
authors.forename: Haixin
authors.initials: H
authors.lastname: Qian
authors.forename: Chang
authors.initials: C
authors.lastname: Cui
authors.forename: Tingshu
authors.initials: T
authors.lastname: Su
authors.forename: Fuqiang
authors.initials: F
authors.lastname: Zhang
authors.forename: Jian
authors.initials: J
authors.lastname: Sun
mesh_terms: D019245:Compressive Strength; D005898:Glass; D008422:Materials Testing; D013696:Temperature; D015019:Yttrium; D015040:Zirconium
chemical_list: D015019:Yttrium; D015040:Zirconium