Laser Machining of Nickel Oxide–Yttria Stabilized Zirconia Composite for Surface Modification in Solid Oxide Fuel Cells

Laser machining of the nickel oxide–yttria-stabilized zirconia (NiO–YSZ) composite in Solid Oxide Fuel Cells (SOFCs) may be an effective approach to enlarge electrode–electrolyte interface and improve cell performance. However, laser energy can cause thermal damage surface during machined operation. In this work, microstructure changes collateral caused by pulsed on sintered NiO–YSZ state-of-the-art SOFCs were evaluated using complementary analysis techniques. patterns consisting parallel tracks processed, varying parameters such as frequency beam density. The analyses evidenced a heat-affected zone (HAZ) limited around 2 µm with microcracking, porosity reduction, recrystallization. chemical composition, phase transformation YSZ mechanical properties at quite limited.