Tribology and Materials | Volume 1 | Issue 3 | 2022 | 96-105


Enhancing of ZA-27 alloy wear characteristics by addition of small amount of SiC nanoparticles and its optimisation applying Taguchi method

Aleksandar Vencl1,2, Blaža Stojanović3, Ranka Gojković4, Simon Klančnik5, Árpád Czifra6, Kristina Jakimovska7, Marta Harničárová8,9

1 University of Belgrade, Faculty of Mechanical Engineering, Belgrade, Serbia
2 South Ural State University, Chelyabinsk, Russia
3 University of Kragujevac, Faculty of Engineering, Kragujevac, Serbia
4 University of East Sarajevo, Faculty of Mechanical Engineering East Sarajevo, East Sarajevo, Bosnia and Herzegovina
5 Faculty of Mechanical Engineering, University of Maribor, Maribor, Slovenia
6 Bánki Donát Faculty of Mechanical and Safety Engineering, Óbuda University, Budapest, Hungary
7 Faculty of Mechanical Engineering, Ss. Cyril and Methodius University in Skopje, Skopje, North Macedonia
8 Faculty of Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovakia
9 Faculty of Technology, Institute of Technology and Business in České Budějovice, České Budějovice, Czechia

 

Abstract: The objective of this work was to investigate the influence of the addition of a small amount of SiC nanoparticles on the mechanical characteristics and wear resistance of ZA-27 alloy. The ZA-27 alloy-based nanocomposites were produced by a relatively cheap compocasting process preceded by mechanical alloying. Reinforcing elements were the silicon carbide (SiC) nanoparticles with an average size lower than 50 nm and in very small amounts of 0.2, 0.3 and 0.5 wt. %. Wear tests were realized on a block-on-disc tribometer under lubricated sliding conditions, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and a sliding distance of 1000 m. Optimisation of the SiC amount was performed by applying the Taguchi method, showing that the SiC amount of 0.5 wt. % is optimal for the given testing conditions. Prediction of the results and wear maps were also conducted. The analysis of variance showed that the SiC amount has the greatest influence on wear rate (70.8 %), followed by the normal load (19.8 %), and the sliding speed (3.9 %), while the influences of all interactions between these factors did not have any significant influence.

Keywords: ZA-27 alloy, SiC nanoparticles, nanocomposites, wear, Taguchi method.

Received: 13-09-2022, Revised: 22-09-2022, Accepted: 22-09-2022

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