Gas-Atomized Nickel Silicide Powders Alloyed with Molybdenum, Cobalt, Titanium, Boron, and Vanadium for Additive Manufacturing

Nickel silicides (NiSi) are renowned for their ability to withstand high temperatures and resist oxidation corrosion in challenging environments. As a result, these alloys have garnered interest potential applications turbine blades underwater settings. However, brittleness is constant obstacle that hinders use producing larger parts. A literature review has revealed incorporating trace amounts of transition metals can enhance the ductility silicides. Consequently, present study aims create NiSi-based powders with addition titanium (Ti), boron (B), cobalt (Co), molybdenum (Mo), vanadium (V) Additive Manufacturing (AM) through process gas atomization. The comprehensively assesses microstructure, phase composition, thermal properties, surface morphology produced powder particles, specifically NiSi11.9Co3.4, NiSi10.15V4.85, NiSi11.2Mo1.8, Ni-Si10.78Ti1.84B0.1. Commonly used analytical techniques (SEM, EDS, XRD, DSC, laser diffraction) identify alloy configuration offers optimal characteristics AM applications. results show spherical particles within size range 20–63 μm, only isolated satellites were observed exist powders, securing smooth flow during processing.