Paper Title:
Effect of Al2O3 Addition on the Mechanical Properties of Biocompatible ZrO2-Al2O3 Composites
  Abstract

In this work, the effects of alumina additions on the properties of the ZrO2-Al2O3 ceramic composites were investigated. Samples of ZrO2 with Al2O3 additions varying between 0 and 30wt-% were prepared. The powder mixtures were milled, compacted by uniaxial cold pressing and sintered at 16000C, in air, for 2 hours. The sintered samples were characterized by their relative density, phase composition and microstructure. As mechanical properties at room temperature, their Vickers hardness and fracture toughness were determined: In all sintering conditions and Al2O3 amounts, the samples presented relative density higher that 99%. The Al2O3 addition produces a linear increase of the hardness, reaching values between 1350 and 1610 HV for the addition of 0 and 30% of alumina, respectively. The fracture toughness was near to 8 MPam1/2 in all conditions. The phase composition, microstructure and relative density were correlated in order to interpret the mechanical properties obtained.

  Info
Periodical
Materials Science Forum (Volumes 530-531)
Edited by
Lucio Salgado and Francisco Ambrozio Filho
Pages
575-580
DOI
10.4028/www.scientific.net/MSF.530-531.575
Citation
C. dos Santos, L.H.P. Teixeira, K. Strecker, C. N. Elias, "Effect of Al2O3 Addition on the Mechanical Properties of Biocompatible ZrO2-Al2O3 Composites", Materials Science Forum, Vols. 530-531, pp. 575-580, 2006
Online since
November 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: F.T.C. Lima, Guerold Sergueevitch Bobrovinitchii, Marcello Filgueira
Abstract:Diamond composites consist in the diamond powder mixed with a binder phase, which sintering is carried out by means of the High Pressure-High...
225
Authors: Bong Hwan Kim, Sang Mok Lee
Abstract:Al-Cu-Fe-B quasicrystalline and Mo coatings were obtained on the mild steel and brass substrates by thermal spraying routes for the purpose...
715
Authors: Yu Li Lin, Chih Chung Lin, Tsung Hsien Tsai, Hong Jen Lai
Abstract:In this study, the microstructure and mechanical properties of 0.63C-12.7Cr martensitic stainless steel during various tempering treatments...
274
Authors: M. Marina, K. Alir, W. Rahman, Z. Nooraizedfiza, Mohd Asri Selamat, M.Z.M. Zamzuri
Abstract:This study is focused on fabricating and characterizing iron (Fe) composites prepared by powder metallurgy route reinforced with varying...
738
Authors: Mi Dan Li, Yao Lu, Lu Lu Feng, Huan Niu, Ya Wen Kong
Chapter 2: Research on Materials,Mechanics and Technologies
Abstract:Composites made from phenolic resin are filled with conductive filler mixtures containing copper powders, natural graphite powders and carbon...
120