Abstract
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 the electrode–electrolyte interface and improve the cell performance. However, laser energy can cause thermal damage to the composite surface during the machined operation. In this work, the microstructure changes and the collateral damage caused by pulsed laser machining on the sintered NiO–YSZ of the state-of-the-art SOFCs were evaluated using complementary analysis techniques. Laser patterns consisting of parallel tracks on sintered NiO–YSZ were processed, varying the laser parameters such as frequency and laser beam energy density. The analyses evidenced a heat-affected zone (HAZ) limited to around 2 µm with microcracking, porosity reduction, and recrystallization. The changes in chemical composition, phase transformation of YSZ and mechanical properties at the machined surface were quite limited.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.