Naslov
Influence of C content on electrochemical corrosion resistance of nanostructured hardmetals

Autori
Tamara Aleksandrov Fabijanić, Johannes Pötschke, Vesna Alar, Željko Alar

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of EURO PM2017, 1-5 October 2017. / - , 2017

Skup
EURO PM2017 Congress and Exibition

Mjesto i datum
Milano, Italija, 01.10.2017. - 05.10.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
nanostructured hardmetals, C content, electrochemical corrosion resistance, magnetic saturation, Co content

Sažetak
The influence of C content on the electrochemical corrosion behavior of nanostructured WC-Co hardmetals was investigated. WC powder with an average grain size dBET 95 nm and with an addition of VC and Cr3C2 as a grain growth inhibitors was used as starting powders. The mixtures with 5 wt. % and 10 wt. %Co and 15 wt. %Co were consolidated by sinter-HIP process. The samples were researched by direct current and alternative current techniques in the solution of 3.5 % NaCl at room temperature. Corrosion parameters like corrosion potential (Ecorr), corrosion current density (jcorr), polarization resistance (Rp) were determined by electrochemical techniques. On the basis of conducted research it was found that C content added to the starting mixture significantly influence the electrochemical corrosion resistance ; better electrochemical corrosion resistance was observed for samples with lower content of C added and lower magnetic saturation.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Metalurgija, Strojarstvo

POVEZANOST RADA