期刊
MATERIALS CHARACTERIZATION
卷 73, 期 -, 页码 43-51出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2012.07.014
关键词
Titanium-titanium boride composites; Hot isostatic pressing; Spark plasma sintering; Vacuum sintering
类别
资金
- All India Council for Technical Education (AICTE), New Delhi
In this work, a detailed characterisation of titanium-titanium boride composites processed by three powder metallurgy techniques, namely, hot isostatic pressing, spark plasma sintering and vacuum sintering, was conducted. Two composites with different volume percents of titanium boride reinforcement were used for the investigation. One was titanium with 20% titanium boride, and the other was titanium with 40% titanium boride (by volume). Characterisation was performed using X-ray diffraction, electron probe micro analysis energy dispersive spectroscopy and wavelength dispersive spectroscopy, image analysis and scanning electron microscopy. The characterisation results confirm the completion of the titanium boride reaction. The results reveal the presence of titanium boride reinforcement in different morphologies such as needle-shaped whiskers, short agglomerated whiskers and fine plates. The paper also discusses how mechanical properties such as microhardness, elastic modulus and Poisson's ratio are influenced by the processing techniques as well as the volume fraction of the titanium boride reinforcement. (C) 2012 Elsevier Inc. All rights reserved.
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