Detail publikačního výsledku

Influence of Metallic Dopants on Fracture Behaviour of TiB2 Based Cermets

CHLUP, Z.; BACA, L.; HALASOVÁ, M.; ŠAJGALÍK, P.

Originální název

Influence of Metallic Dopants on Fracture Behaviour of TiB2 Based Cermets

Anglický název

Influence of Metallic Dopants on Fracture Behaviour of TiB2 Based Cermets

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

hot pressing, mechanical alloying, mechanical milling, bending test, toughness, cermets

Klíčová slova v angličtině

hot pressing, mechanical alloying, mechanical milling, bending test, toughness, cermets

Autoři

CHLUP, Z.; BACA, L.; HALASOVÁ, M.; ŠAJGALÍK, P.

Rok RIV

2016

Vydáno

21.10.2012

Kniha

Acta Metallurgica Slovaca

ISSN

1335-1532

Periodikum

Acta Metallurgica Slovaca

Stát

Slovenská republika

Strany od

98

Strany do

105

Strany počet

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"
}