A study on the mechanical properties and microstructure of Alumina-zirconia nano-composite infiltrated ceramic.

Yongping Chen; Yuankun Cen; Yunmao Liao

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A study on the mechanical properties and microstructure of Alumina-zirconia nano-composite infiltrated ceramic.

Author: Yongping CHEN ¹ ; Yuankun CEN ; Yunmao LIAO
Author Information

1. Key Lab. for Oral Biomedical Engineering Ministry of Education, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
Publication Type:Journal Article
MeSH: Aluminum Oxide; chemistry; Dental Materials; chemistry; Dental Porcelain; chemistry; Dental Stress Analysis; Elasticity; Hardness; Materials Testing; Metal Ceramic Alloys; chemistry; Microscopy, Electron, Scanning; Nanotechnology; Porosity; Stress, Mechanical; Zirconium; chemistry
From: West China Journal of Stomatology 2003;21(3):238-240
CountryChina
Language:Chinese
Abstract:
OBJECTIVETo evaluate the mechanical properties and microstructure of a new dental full-ceramic material: alumina-zirconia nano-composite infiltrated ceramic.
METHODSThe flexural strength was tested with three-point bending method and the fracture toughness with single edge notch bend (SENB) method. The composition of crystal phases in the infiltrated ceramic was analyzed by X-ray diffraction (XRD). The microstructure of the infiltrated ceramic was examined by scanning electronic microscope (SEM).
RESULTSThe average three-point flexural strength of the material was (610.85 +/- 37.07) MPa and the average fracture toughness determined by SENB method was (6.51 +/- 1.38) MPa.m1/2. The main crystal phases in this composite ceramic were alpha-Al2O3 and TZP-ZrO2.
CONCLUSIONAlumina-zirconia nano-composite infiltrated ceramic is a new infiltrated ceramic with favorable mechanical properties. It demonstrated a promising future for clinical application.