Paper Title:
Ceramics Composites Derived From Polysiloxane / Al2O3 / Ti
  Abstract

In this work alumina based composites ceramics with a polymeric precursor (polysiloxane) and metallic Ti with two different size particle distribution, Ti without milling (ATM) and 5h milling (ATM5), were characterized. PMS thermogravimetric curve indicates that the weight loss percentage was about 20%. The densities achieved were 3,50g/cm3 and 3,70g/cm3 for samples prepared with Ti as received and 5h milling, respectively. During decomposition of the polymer during pyrolysis and sintering, the particles of the matrix may react with carbon and Si from the polymer precursor, metallic Ti and gas atmosphere, nitrogen, to form different phases. The ATM samples presented Al2O3 and TiCN. The specimens prepared with 5h milling Ti (ATM5) is constituted by mullite besides Al2O3 and TiCN. The ATM5 samples have smaller densities than ATM but there is no significant difference in the hardness values.

  Info
Periodical
Materials Science Forum (Volumes 660-661)
Edited by
Lucio Salgado and Francisco Ambrozio Filho
Pages
667-672
DOI
10.4028/www.scientific.net/MSF.660-661.667
Citation
A. L. E. Godoy, J. C. Bressiani, A. H. A. Bressiani, "Ceramics Composites Derived From Polysiloxane / Al2O3 / Ti", Materials Science Forum, Vols. 660-661, pp. 667-672, 2010
Online since
October 2010
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