Journal
CERAMICS INTERNATIONAL
Volume 40, Issue 10, Pages 16761-16766Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2014.08.044
Keywords
Microwave sintering; Al2O3/TiC micro-composite; Microstructure; Mechanical properties
Categories
Ask authors/readers for more resources
In this study a series of tests were conducted in order to investigate the feasibility of producing Al2O3/TiC micro-composite ceramic tool materials with high mechanical properties by microwave sintering. Multiphase materials were simultaneously added into the Al2O3/TiC system. The samples were sintered in a multimode microwave furnace at 2.45 GHz on the base of powder bed which consists of graphite powder and silicon carbide. The influence of the sintering temperature on the relative density, mechanical properties and microstructure was studied. The experimental results showed that the Al2O3/TiC micro-composite which was sintered at 1700 degrees C in argon for 10 minutes had optimal mechanical properties. Its relative density, fracture toughness and Vickers hardness were 99.2% theoretical density (TD), 5.18 MPa m(1/2) and 21.2 GPa, respectively. Phase composition and microstructure analysis showed that the microwave sintered Al2O3/TiC micro-composites had a tendency to obtain a homogeneous microstructure in a short time, and restrain the reaction between Al2O3 and TiC. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available