ANALISIS SEM-EDS DARI MATERIAL HIGH ENTROPY ALLOY (HEA) YANG DISINTESIS DENGAN TEKNIK MECHANICAL ALLOYING

Abstract

The surface morphology of HEA Co-Cr-Al-Fe-Ni material and distribution of metal compositions in alloy were studied using Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS) analysis. A total of 40 g of HEA material was synthesized through a 60-hour milling process with the addition of 1 wt% stearic acid. The results revealed that the material surface exhibited a spherical shape with a less even distribution of metal composition. Although the entropy value of the Co-Cr- Al-Fe-Ni alloy material configuration met the criteria for being classified as a HEA. It can be concluded that the mechanical alloying technique was successful in synthesizing the HEA material.