Two-step flash sintering of ZnO: Fast densification with suppressed grain growth
نویسندگان
چکیده
Article history: Received 19 June 2017 Received in revised form 14 July 2017 Accepted 14 July 2017 Available online xxxx Two-step flash sintering (TSFS) was proposed as a new ceramic fabrication method to achieve fast densification with suppressed grain growth. Using ZnO as an examplar, ~96.5% of theoretical density was achieved using TSFS with a grain size of ~370 nm, representing a N3 times reduction of the grain size in comparisonwith conventional (one-step) flash sintering. Moreover, TSFS achieved this result in a few minutes, N200 times faster than that needed for conventional two-step sintering to obtain comparable results, thereby representing an opportunity for significant energy and cost savings. © 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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