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Open AccessArticle

Preparation and Characterization of TiB2-(Supra-Nano-Dual-Phase) High-Entropy Alloy Cermet by Spark Plasma Sintering

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
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Metals 2018, 8(1), 58; https://doi.org/10.3390/met8010058
Received: 29 November 2017 / Revised: 23 December 2017 / Accepted: 9 January 2018 / Published: 17 January 2018
This paper introduces the preparation method and characterization results of TiB2 ceramics with CoCrFeNiAl high-entropy alloy (HEA) as a sintering aid by Spark Plasma Sintering (SPS). Good wettability between HEA and TiB2 was proved by the sessile drop method, indicating promising prospects for this composite. The sintering results showed that the addition of HEA could dramatically promote the sinterability of TiB2. TiB2-5 wt. % HEA dense ceramics prepared at the optimal temperature of 1650 °C showed fine morphology without formation of brittle phases. The liquid phase in the ceramics was highly consistent with the so-called “supra-nano-dual-phase materials (SNDPM)”, with near-ideal strength. This study represents the first time that a ceramic-SNDPM composite has been fabricated since the invention of such structures. View Full-Text
Keywords: titanium diboride; high-entropy alloy; cermet; supra-nano-dual-phase titanium diboride; high-entropy alloy; cermet; supra-nano-dual-phase
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MDPI and ACS Style

Zhang, S.; Sun, Y.; Ke, B.; Li, Y.; Ji, W.; Wang, W.; Fu, Z. Preparation and Characterization of TiB2-(Supra-Nano-Dual-Phase) High-Entropy Alloy Cermet by Spark Plasma Sintering. Metals 2018, 8, 58.

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