Synthesis and Sintering of ZnO Nanopowders
AbstractNanopowders are continuously under investigation as they open new perspectives in numerous fields. There are two main challenges to stimulating their development: sufficient low-cost, high throughput synthesis methods which lead to a production with well-defined and reproducible properties; and for ceramics specifically, the conservation of the powders’ nanostructure after sintering. In this context, this paper presents the synthesis of a pure nanosized powder of ZnO (dv50~60 nm, easily redispersable) by using a continuous Segmented Flow Tubular Reactor (SFTR), which has previously shown its versatility and its robustness, ensuring a high powder quality and reproducibility over time. A higher scale of production can be achieved based on a “scale-out” concept by replicating the tubular reactors. The sinterability of ZnO nanopowders synthesized by the SFTR was studied, by natural sintering at 900 °C and 1100 °C, and Spark Plasma Sintering (SPS) at 900 °C. The performance of the synthesized nanopowder was compared to a commercial ZnO nanopowder of high quality. The samples obtained from the synthesized nanopowder could not be densified at low temperature by traditional sintering, whereas SPS led to a fully dense material after only 5 min at 900 °C, while also limiting the grain growth, thus leading to a nanostructured material. View Full-Text
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Aimable, A.; Goure Doubi, H.; Stuer, M.; Zhao, Z.; Bowen, P. Synthesis and Sintering of ZnO Nanopowders. Technologies 2017, 5, 28.
Aimable A, Goure Doubi H, Stuer M, Zhao Z, Bowen P. Synthesis and Sintering of ZnO Nanopowders. Technologies. 2017; 5(2):28.Chicago/Turabian Style
Aimable, Anne; Goure Doubi, Hervé; Stuer, Michael; Zhao, Zhe; Bowen, Paul. 2017. "Synthesis and Sintering of ZnO Nanopowders." Technologies 5, no. 2: 28.