DefinePK

Abstract

The main problem is the inevitable grain growth when metallic material operated in high temperature. Therefore, the main objective is to improve the thermal stability of Fe80Cr20 alloy for interconnect. The most promising technology to improve the properties by ultrasonic technique (UT). The materials was treated using ultrasonic with frequency of 35 kHz at various holding time of 3.5 h, 4.5 h and 5 h. Characterization and analysis were carried out by using Scanning Electron Microscope (SEM), Energy Dispersive X-Ray Spectroscopy (EDS) and Thermo Gravimetric Analysis (TGA). Ultrasonic technique can reduce the crystallite size from 138.656 nm to 37.477 nm, improve the finer surface morphology and more homogenous powder size as compared to untreated sample (raw material). Thermal stability was improved appropriate 9% when treated using ultrasonic technique at 4.5 h as compared to raw material. Therefore, that technique is required for improving the fine and homogenous powder size as well as thermal stability of Fe80Cr20 alloy as metallic material.