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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F07%3A00023746%21RIV10-MSM-14310___
rdf:type
skos:Concept n21:Vysledek
dcterms:description
The possibility of direct determination of Co, Nb, Ta and Ti in WC/Co cemented materials by different methods of laser ablation (LA-ICP-OES/MS, LIBS) has been studied. Using systems with higher laser wavelengths, fractionation occurred. The problem of fractionation arose especially in case of cobalt as an element with low melting and boiling temperature (1495stC and 2927stC) and different linkage in hard-metal samples comparing with other elements of interest. Signal vs. content dependences constructed for each element and each method show best correlation coefficients for LA-ICP-MS method using Nd:YAG @213 nm laser. Described LA-ICP-MS method is suitable for determination of mentioned analytes with repeatability up to 8% RSD. LIBS method using excimer laser is suitable for determination of Nb, Ta and Ti with repeatability up to 10% RSD. For Co determination using LIBS, only semiquntitative estimation is possible. The possibility of direct determination of Co, Nb, Ta and Ti in WC/Co cemented materials by different methods of laser ablation (LA-ICP-OES/MS, LIBS) has been studied. Using systems with higher laser wavelengths, fractionation occurred. The problem of fractionation arose especially in case of cobalt as an element with low melting and boiling temperature (1495stC and 2927stC) and different linkage in hard-metal samples comparing with other elements of interest. Signal vs. content dependences constructed for each element and each method show best correlation coefficients for LA-ICP-MS method using Nd:YAG @213 nm laser. Described LA-ICP-MS method is suitable for determination of mentioned analytes with repeatability up to 8% RSD. LIBS method using excimer laser is suitable for determination of Nb, Ta and Ti with repeatability up to 10% RSD. For Co determination using LIBS, only semiquntitative estimation is possible.
dcterms:title
Laser ablation for direct analysis of tungsten carbides Laser ablation for direct analysis of tungsten carbides
skos:prefLabel
Laser ablation for direct analysis of tungsten carbides Laser ablation for direct analysis of tungsten carbides
skos:notation
RIV/00216224:14310/07:00023746!RIV10-MSM-14310___
n3:aktivita
n20:Z
n3:aktivity
Z(MSM0021622411), Z(MSM0021622412)
n3:dodaniDat
n11:2010
n3:domaciTvurceVysledku
n4:2647788 n4:4788303 n4:2280833 n4:9572910
n3:druhVysledku
n13:D
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
430573
n3:idVysledku
RIV/00216224:14310/07:00023746
n3:jazykVysledku
n5:eng
n3:klicovaSlova
Tungsten carbide; laser ablation; inductively coupled plasma
n3:klicoveSlovo
n7:laser%20ablation n7:Tungsten%20carbide n7:inductively%20coupled%20plasma
n3:kontrolniKodProRIV
[1060E629FDDF]
n3:mistoKonaniAkce
Ledeč nad Sázavou
n3:mistoVydani
Česká Těšín
n3:nazevZdroje
Hutní a průmyslová analytika 2007
n3:obor
n8:CB
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n11:2007
n3:tvurceVysledku
Staňková, Alice Novotný, Karel Kanický, Viktor Holá, Markéta
n3:typAkce
n9:EUR
n3:zahajeniAkce
2007-01-01+01:00
n3:zamer
n19:MSM0021622412 n19:MSM0021622411
s:numberOfPages
6
n18:hasPublisher
Václav Helán
n14:isbn
978-80-86380-38-4
n10:organizacniJednotka
14310