<p>Selective laser melting (SLM) has developed into a revolutionary process for manufacturing Titanium Grade 2 components, facilitating intricate geometries with enhanced mechanical properties. The inherent vulnerability of SLM-manufactured titanium to high-temperature oxidation and its intrinsic surface roughness restrict its wider industrial application, especially in aerospace and medicinal fields. This research seeks to address these issues by utilizing a plasma-sprayed alumina (Al₂O₃) coating to improve oxidation resistance and thermal stability. Coated and uncoated samples were methodically analyzed using field emission scanning electron microscopy (FESEM), energy-dispersive x-ray spectroscopy (EDAX), x-ray diffraction (XRD), and atomic force microscopy (AFM) to assess microstructural alterations. Thermal performance was evaluated using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The findings demonstrate that the alumina covering markedly diminishes oxidation, as indicated by a reduced mass gain in TGA and a diminished exothermic peak in DSC. Moreover, coated surfaces demonstrated less porosity, enhanced smoothness, and a more homogeneous microstructure. The results validate that plasma-sprayed alumina coatings significantly improve the high-temperature resilience of SLM-fabricated Titanium Grade 2, offering a practical surface engineering option for rigorous applications in high-performance sectors.</p>