| Description |
x, 81 leaves : illustrations (some colored) ; 29 cm |
| Summary |
"A drop-on-demand inkjet system was assembled that allowed viewing of droplet formation and flight. A dilute CeO₂ ink was made and printed onto LSM substrates. Continuous line patterns with -200 [mu]m line widths and 1-2 [mu]m thick sintered films were made. Inks containing 0.5-100 mol% Nb₂O₅ were made and lines printed with them were laminated between layers of tape cast BaTiO₃. Regions of inhibited grain growth caused by diffusion of the Nb during densification were observed. Using the observed diffusion geometries and data on resistivity and dielectric permittivity of Nb-doped BaTiO₃, software models were made of diffusion gradients placed at the end of electrodes in multilayer ceramic capacitors. Maximum electric fields were calculated versus frequency and layer thickness to evaluate the effect of the diffusion gradients on capacitor breakdown strength. For direct current applications, possible layer thickness reductions of 60-80% or more were predicted by surrounding the electrode edge with a 20 [mu]m wide region of diffused Nb. For alternating currents over 1000 Hz, a possible layer thickness reduction of 35% was predicted for a 120 [mu]m wide diffuse region"--Abstract, leaf iii. |
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