Abstract
We fabricated unique ceramics matrix composites (CMCs) called natto-structured oxides using metal-ethylenediaminetetraacetic acid (EDTA) solution. The natto-structured oxide in this study is a combination of micron-sized oxide particles and oxide with nanoscale fibrous microstructures. The natto-structures were fabricated on Si substrates by spin-coating Er-EDTA solutions with hollow (Y2O3:Eu3+, SiO2) particles followed by atmospheric sintering. We investigated the effects of filler concentrations, rotation speeds, and filler diameters on the formation of natto-structured oxides. The results indicate that the rotating centrifugal force in the spin coating process is the dominant factor affecting the formation of natto-structured oxides.
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