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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F13%3A00421219%21RIV14-MSM-68081723
rdf:type
skos:Concept n10:Vysledek
dcterms:description
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. 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.
dcterms:title
Influence of metallic dopants on fracture behaviour of TiB2 based cermets Influence of metallic dopants on fracture behaviour of TiB2 based cermets
skos:prefLabel
Influence of metallic dopants on fracture behaviour of TiB2 based cermets Influence of metallic dopants on fracture behaviour of TiB2 based cermets
skos:notation
RIV/68081723:_____/13:00421219!RIV14-MSM-68081723
n10:predkladatel
n11:ico%3A68081723
n4:aktivita
n19:P n19:I
n4:aktivity
I, P(ED1.1.00/02.0068), P(GAP108/11/1644)
n4:cisloPeriodika
1
n4:dodaniDat
n12:2014
n4:domaciTvurceVysledku
n9:4814339 n9:8162840
n4:druhVysledku
n18:J
n4:duvernostUdaju
n6:S
n4:entitaPredkladatele
n16:predkladatel
n4:idSjednocenehoVysledku
79839
n4:idVysledku
RIV/68081723:_____/13:00421219
n4:jazykVysledku
n15:eng
n4:klicovaSlova
hot pressing; mechanical alloying; mechanical milling; bending test; toughness; cermets
n4:klicoveSlovo
n7:mechanical%20milling n7:bending%20test n7:mechanical%20alloying n7:hot%20pressing n7:cermets n7:toughness
n4:kodStatuVydavatele
SK - Slovenská republika
n4:kontrolniKodProRIV
[675C7272BF89]
n4:nazevZdroje
Acta Metallurgica Slovaca Conference
n4:obor
n14:JL
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
4
n4:projekt
n17:GAP108%2F11%2F1644 n17:ED1.1.00%2F02.0068
n4:rokUplatneniVysledku
n12:2013
n4:svazekPeriodika
3
n4:tvurceVysledku
Bača, L. Chlup, Zdeněk Halasová, Martina Šajgalík, P.
s:issn
1338-1660
s:numberOfPages
8
n8:doi
10.12776/amsc.v3i0.112