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Title: Boron Carbide-Based Nanostructured Composite by Spark Plasma Sintering
Authors: Xie, Sky Shumao
Solodkyi, Ievgen
Vasylkiv, Oleg
Silberschmidt, Vadim
Tok, Alfred Iing Yoong
Keywords: Structured composite
Spark plasma sintering
Issue Date: 2014
Source: Xie, S. S., Solodkyi, I., Vasylkiv, O., Silberschmidt, V., & Tok, A. I. Y. (2014). Boron Carbide-Based Nanostructured Composite by Spark Plasma Sintering. Proceedings of the 1st International Conference on Progress in Additive Manufacturing (Pro-AM 2014), 109-114.
Abstract: In the current paper, we present the use of nanostructured boron suboxide (B6O) and in-situ synthesized hexagonal boron nitride (hBN) to form structured composites with commercially available boron carbide (B4C). Taking advantage of the rapid heating rate of Spark Plasma Sintering (SPS), structured composite could be produced by to limiting the grains growth and phase segregation. Characterisation of the composite structures and mechanical properties were carried out using electron microscopy techniques, X-ray diffraction and micro/nano-indentation test. Results have shown that the optimised mix of B4C sintered with nanostructured B6O could achieved a high hardness of 40 GPa and fracture toughness of 4.82 MPa.m1/2. Using a reactive-SPS technique to sinter B4C in nitrogen gas environment, a unique core-shell structure of B4C-hBN was produced. Nano-indentation test of the B4C-hBN composite shows that an average high local hardness of 56.7GPa was achieved.
DOI: 10.3850/978-981-09-0446-3_015
Rights: © 2014 by Research Publishing Services.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Conference Papers
Pro-AM Conference Papers
TL Conference Papers

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