This study investigates the fabrication and properties of Al2O3-Ni composites produced by centrifugal slip casting under a constant external magnetic field, aiming to optimize particle alignment and distribution for enhanced material performance. The research compares two series of samples made with nickel powders from Sigma Aldrich and Alfa Aesar. Series I exhibited non-uniform nickel particle distribution, while Series II demonstrated a more uniform dispersion and consistent particle size, likely due to improved alignment under the magnetic field. The optimal results from compression tests revealed that Series II achieved a compressive strength of 410 MPa, roughly twenty times greater than Series I, highlighting the effectiveness of the magnetic field in enhancing the microstructure and mechanical properties. These findings suggest that centrifugal slip casting with a constant magnetic field holds significant potential for applications in aerospace and electronics, where robust material performance under extreme conditions is required.