Structural properties and porous nature of newly developed NEG materials

Abstract

Non-Evaporable Getter (NEG) applications have increased significantly in recent years, and these materials have been widely used at high temperatures for various applications. The present study has discussed the structural properties and porosity nature of newly developed getter materials with rare earth (RE-Samarium and Gadolinium) element substitutions. The selected materials, namely Zr–Co and Zr–Co–(Sm+Gd) with different compositions, have been synthesized using the solid-state reaction method, and the alloys have been activated at a temperature of 1000°C. The obtained results have been analyzed using X-ray Diffraction (XRD) for structural analysis, Scanning Electron Microscopy (SEM) coupled with Energy Dispersive Spectroscopy (EDS) for morphological and elemental analysis, and Transmission Electron Microscopy (TEM) for microstructural evaluation and particle size determination. Furthermore, Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) have been employed to explain the nitrogen storage capacity of the NEG materials. The present work has aimed to study and compare the structural parameters and porosity nature of pure and rareearth substituted NEG alloys.