Paper Title:
Titanium Carbide Reinforced Composite Tool Ceramics Based on Alumina
  Abstract

The present study reports some preliminary results obtained by reinforcing Al2O3-10 wt% ZrO2 (partially stabilized with Y2O3 -Y5 and monoclinic phase m-ZrO2) composite with TiC phase in amount of 5 wt %. Ceramic composites were prepared on the basis submicro and nano scale trade powders. Apparent density, porosity, Vicker’s hardness, Young’s modulus and fracture toughness (KIC) were determined. Wear resistance (Vn) very important property for tool ceramics was specified by the speed of mass lost. Scanning electron microscopy (SEM) to observation of the fracture surface microstructure was used. The titanium carbide reinforced composite tool ceramics based on alumina exhibit high hardness, fracture toughness (critical stress intensity factor KIC increase up to 5,2 MPa m1/2), high elastic moduli and higher wear resistance in related to pure alumina. Cutting tests confirm the high performance of these ceramic composites.

  Info
Periodical
Edited by
Pietro VINCENZINI, Sheldon WIEDERHORN and Paolo COLOMBO
Pages
50-55
DOI
10.4028/www.scientific.net/AST.65.50
Citation
M. Szutkowska, B. Smuk, M. Boniecki, "Titanium Carbide Reinforced Composite Tool Ceramics Based on Alumina", Advances in Science and Technology, Vol. 65, pp. 50-55, 2010
Online since
October 2010
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$32.00
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