Naslov
Determination of Microstructural Characteristics of Nanostructured Cemented Carbide

Autori
Ćorić, Danko ; Rodinger, Tomislav ; Sakoman, Matija ; Šnajdar Musa, Mateja

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

Izvornik
Book of Abstracts and Conference Proceedings on USB of 21th International Conference on Materials, Tribology and Recycling - MATRIB 2021 / Ćorić, Danko ; Šolić, Sanja ; Ivušić, Franjo - Zagreb : Hrvatsko društvo za materijale i tribologiju (HDMT), 2021, 151-160

Skup
21th International Conference on Materials (MATRIB 2021)

Mjesto i datum
Vela Luka, Hrvatska, 30.06.2021. - 02.07.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Nanostrukturirani tvrdi metal, sinter-HIP, mikrostruktura
(Nanostructured cemented carbide ; sinter-HIP, microstructure)

Sažetak
In recent times, the development of cemented carbides is based on the application of ultrafine and nano grain size powder particles. Sintering such powders significantly improves the properties of the final product and enables the use of tools at higher cutting speeds with a longer service life. In this article, sintering procedure for nanostuctured cemented carbide tools with 10 wt. % Co and 90 wt. % WC was carried out. The characteristics of the initial powder mixture and the sintering process are described. By measuring the density of the sintered sample and microstructural analysis of the polished surface, 100 % of the theoretical density without the presence of pores and unbound carbon was determined. The nano size of the carbide grain was confirmed by scanning electron microscopy. By measuring the magnetic saturation it was confirmed that the sample doesn't contain unwanted microstructural defects such as η-phase and unbound carbon and by measuring the coercitive forces it was also confirmed that the WC grains remained in the nano-sized range.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija, Strojarstvo

POVEZANOST RADA