Preparation of bulk Si3N4 from tape casting and lamination
Source abstract
Abstract
Abstract Si 3 N 4 samples were prepared by tape casting, laminating and hot pressing (HP)/spark plasma sintering (SPS). Initially, the as-received Si 3 N 4 powders were chemically treated to improve the dispersion in aqueous media. After surface treatment, a decrease in zeta potential was observed in the basic region. Rheological measurements showed that 40 vol.% Si 3 N 4 slips exhibited a well deflocculated state in the presence of the sintering additives. After the addition of binder and plasticizer, Si 3 N 4 slurries exhibited a shear thinning behavior. The dried green sheets were smooth and homogeneous on both sides. The Si 3 N 4 samples were densified by HP and SPS. A good homogeneity is observed and no single layers can be distinguished in the fracture surface. The mechanical properties were also studied.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Semiconductor materials and devices · Diamond and Carbon-based Materials Research
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References (38)
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