Naslov
Effects of Co Content on the WC Grain Size and Hardness of Cemented Carbide

Autori
Sakoman, Matija ; Ćorić, Danko ; Aleksandrov Fabijanić, Tamara

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

Izvornik
Proceedings of International Conference on Materials: Corrosion, Heat Treatment, Testing and Tribology, MTECH 2017 / Kovačić, Saša ; Kurtela, Marin ; Markučić, Damir ; Sakoman, Matija - Zagreb : Hrvatsko društvo za materijale i tribologiju (HDMT), 2017, 152-158

Skup
International Conference on Materials: Corrosion, Heat Treatment, Testing and Tribology, MTECH 2017

Mjesto i datum
Zadar, Hrvatska, 04.10.2017. - 07.10.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cemented carbides, grain growth inhibitors, Co content, WC grain size, Vickers hardness

Sažetak
Nowadays, more and more attention is given to cemented carbides with small grain size, which stand out with their enhanced mechanical properties and exploitation characteristics. The advantages of small grained cemented carbides can only be utilized if that grain size can be preserved after the sintering. For that reason grain growth inhibitors GGIs are added into the starting powder mixture of WC-Co before sintering. The experiments were carried out on three different samples sintered from diferent mixtures of WC powder with the cobalt content of 5, 10 and 15 wt.% with the constant content grain growth inhibitors (0.41% VC, 0.80% Cr3C2). The grain size after sintering has been determined by conducting coercive force measurements. On the samples of cemented carbides, Vickers hardness measurements (HV30) have been carried out. By analysing the obtained results a significant correlation between the Vickers hardness and WC grain size influenced by the Co content in the stating mixture has been determined.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA