Přístupnostní navigace
E-application
Search Search Close
Publication detail
CHLUP, Z. BACA, L. HALASOVÁ, M. ŠAJGALÍK, P.
Original Title
Influence of Metallic Dopants on Fracture Behaviour of TiB2 Based Cermets
Type
conference paper
Language
English
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
hot pressing, mechanical alloying, mechanical milling, bending test, toughness, cermets
Authors
CHLUP, Z.; BACA, L.; HALASOVÁ, M.; ŠAJGALÍK, P.
RIV year
2012
Released
21. 10. 2012
ISBN
1335-1532
Periodical
Acta Metallurgica Slovaca
State
Slovak Republic
Pages from
98
Pages to
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" }