Publication detail
Influence of Metallic Dopants on Fracture Behaviour of TiB2 Based Cermets
CHLUP, Z. BACA, L. HALASOVÁ, M. ŠAJGALÍK, P.
English title
Influence of Metallic Dopants on Fracture Behaviour of TiB2 Based Cermets
Type
Paper in proceedings (conference paper)
Language
en
Original abstract
Titanium diboride (TiB2) – metal composites were prepared by hot-pressing of the TiB2 – Ni and Ta doped TiB2-Ni powders. The obvious limitation of pure TiB2 is the bad sinterability, exaggerated grain growth at temperatures exceeded 2000 C needed for the densification and brittleness. There is only limited number of approaches how to improve fracture resistance. The method used in this work is based on doping the basic microstructure by above mentioned metals. The positive influence of dopants on the microstructure and fracture behaviour was demonstrated by means of mechanical properties and fractographic analysis. The right selection of dopants led to the refinement of microstructure resulted in the increase of flexural strength up to the level of 700 MPa and fracture toughness of 5.0 MPa.m1/2.
Keywords in English
hot pressing, mechanical alloying, mechanical milling, bending test, toughness, cermets
Released
2012-10-21
ISSN
1335-1532
Book
Acta Metallurgica Slovaca
Pages from–to
98–105
Pages count
8
BIBTEX
@inproceedings{BUT101123,
author="Zdeněk {Chlup} and Ľuboš {Bača} and Martina {Halasová} and Pavol {Šajgalík}",
title="Influence of Metallic Dopants on Fracture Behaviour of TiB2 Based Cermets",
booktitle="Acta Metallurgica Slovaca",
year="2012",
journal="Acta Metallurgica Slovaca",
number="3",
pages="98--105",
issn="1335-1532"
}