ISSN:
1662-9752
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:
Several boride sintered bodies such as TiB2, ZrB2, and SiB6 were previously reported. Inthe present study, the sinterability and physical properties of chromium boride (CrB2) containingchromium carbide (Cr3C2) sintered bodies were investigated in order to determine its new advancedmaterial. The samples were sintered at desired temperature for 1 hour in vacuum under a pressureby hot pressing. The relative density of sintered bodies was measured by Archimedes’ method. Therelative densities of CrB2 addition of 0, 5, 10, 15 and 20 mass % Cr3C2 composites were 92 to 95 %.The Vickers hardness of the CrB2 with 10 and 15 mass % Cr3C2 composites were about 14 and 15GPa at room temperature, respectively. The Vickers hardness at high temperature of the CrB2addition of 10 mass % Cr3C2 composite decreased with increasing measurement temperature. TheVickers hardness at 1273 K of the sample was 6 GPa. The Vickers hardness of CrB2 addition ofCr3C2 composites was higher than monolithic CrB2 sintered body. The powder X-ray diffractionanalysis detected CrB and B4C phases in CrB2 containing Cr3C2 composites
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1077.pdf
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