ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Dense Al2O3 particle-Y-TZP matrix (Al2O3〈40 vol%) composite was prepared by pressureless sintering at 1550°C. Composites with 10–30 vol% Al2O3 particles showed enhanced fracture toughness, bending strength and Vicker's hardness as compared to single-phase Y-TZP. The highest strength (1150 MPa) and highest toughness (12.4 MPa m1/2) were obtained for the composite containing 10 vol% Al2O3. It was found that, in addition to the contribution by the crack-deflection effect, the enhanced phase transformation from tetragonal to monoclinic during fracture was the main toughening mechanism in operation in the composites.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00351224
