The reoxidation of sintered BaTiO3-based multilayer ceramic capacitors (MLCCs) is currently an empirically determined, but poorly understood, procedure. In this work, the incorporation of oxygen into BaTiO3-based MLCCs has been studied by means of isotope exchange annealing (O182/O162, H12O18/H12O16 or H22O16/H12O16) and subsequent determination of the isotope profiles in the solid by secondary ion mass spectrometry. Oxygen isotope profiles in the barium titanate dielectric can be described by a bulk diffusion coefficient D∗ and a surface exchange coefficient k∗. The values obtained for k∗ indicate that oxygen incorporation from H2O is much faster than from dry O2; it thus plays the key role in the reoxidation process.
No takes yet. Share an insight, caveat, or question.
Kessel et al. (2010) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: