Chakraborty, Shirshendu and Debnath, Debashish and Mallick, Azizur Rahaman and Das, Probal Kumar (2015) Mechanical, Tribological, and Thermal Properties of Hot-Pressed ZrB2-B4C Composite. International Journal of Applied Ceramic Technology, 12 (3). pp. 568-576. ISSN 1546-542X

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Abstract

The effect of addition of submicrometer-sized B4C (5,10 and 15 wt%) on microstructure, phase composition, hardness, fracture toughness, scratch resistance, wear resistance, and thermal behavior of hot-pressed ZrB2-B4C composites is reported. ZrB2-B4C (10 wt%) composite has V-H1 of 20.81 GPa and fracture toughness of 3.93 at 1kgf, scratch resistance coefficient of 0.40, wear resistance coefficient of 0.01, and ware rate of 0.49x10(-3)mm(3)/Nm at 10N. Crack deflection by homogeneously dispersed submicrometer-sized B4C in ZrB2 matrix can improve the mechanical and tribological properties. Thermal conductivity of ZrB2-B4C composites varied from 70.13 to 45.30W/mK between 100 degrees C and 1000 degrees C which is encouraging for making ultra-high temperature ceramics (UHTC) component.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Non-Oxide Ceramics & Composites
Depositing User:	Bidhan Chaudhuri
Date Deposited:	22 Dec 2015 07:16
Last Modified:	22 Dec 2015 07:16
URI:	http://cgcri.csircentral.net/id/eprint/2960

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