Effects of B4C addition on the microstructure and mechanical properties of hot pressed SiC ceramic matrix composites

Hasan Öǧünç*, Zeynep Keçeli, Tahsin Boyraz, Okan Addemir, M. Lütfi Öveçoǧlu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The effect of B4C addition on microstructural and mechanical properties of the SiC-B4C powder composites were investigated after high energy milling and hot pressing. In the present work, SiC powders containing 5wt%, 10wt%, 15wt% B4C were mechanically alloyed in a high energy ball mill for 8 h. Microstructural characterization investigations (SEM, XRD) were carried out on mechanically alloyed powder mixtures and on composites sintered at 2100°C for 1 hour in vacuum at 50 MPa. Mechanical properties were characterized by hardness tests, three point bending strength tests and Charpy impact tests for different compositions. Significant increases in hardness and bending strength values were observed due to B4C addition.

Original languageEnglish
Title of host publicationA Global Road Map for Ceramic Materials and Technologies
Subtitle of host publicationForecasting the Future of Ceramics, International Ceramic Federation - 2nd International Congress on Ceramics, ICC 2008, Final Programme
Publication statusPublished - 2008
Event2nd International Congress on Ceramics, ICC 2008 - Verona, Italy
Duration: 29 Jun 20084 Jul 2008

Publication series

NameA Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, International Ceramic Federation - 2nd International Congress on Ceramics, ICC 2008, Final Programme

Conference

Conference2nd International Congress on Ceramics, ICC 2008
Country/TerritoryItaly
CityVerona
Period29/06/084/07/08

Keywords

  • BC
  • Ceramic Matrix Composites
  • Hot Press
  • SiC

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