ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
TiB2-TiC ceramic matrix composites were fabricated by in situ synthesis under hotisostatic pressing (HIP) with 3TiH2-B4C and 11TiH2-3B4C being the raw materials, respectively. TheXRD analysis indicates that the samples synthesized from 3TiH2-B4C have TiB2 and TiC phases,while those from 11TiH2-3B4C have not only TiB2 and TiCx phases, but also Ti3B4 phase. TiB2-TiCxceramic matrix composites obtained from 11TiH2-3B4C have better mechanical properties than thosefrom 3TiH2-B4C. The microstructures of the composites are investigated with SEM and TEM. TiB2grains are platelet grains; Ti3B4 grains have two different morphologies. Ti3B4 phases are formedthrough two different paths: fine grain Ti3B4 is formed through TiB+B=Ti3B4 at low temperature;large plate-like grain Ti3B4 is formed through TiB2+TiB=Ti3B4 at high temperature
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.251.pdf
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