Spark Plasma Sintering-Reactive Synthesis of SiC and SiC–HfB2 Ceramics Based on Natural Renewable Raw Materials

Ti-24Nb-4Zr-7.9Sn alloy was prepared by Powder Metallurgy (PM) and Spark Plasma Sintering (SPS) using titanium hydride powder, niobium powder, zirconium powder and tin powder as raw materials. The effect of sintering process on microstructure and mechanical properties was investigated by mechanical measurement and SEM. The results showed that the best sintering process by PM was at 12500C for 2 h. The relative density, tensile strength and elongation of the alloy reached 97.2%, 705MPa and 6.2%, respectively. The microstructure was a typical Widmannstatten microstructure, which possessed β-matrix and α-precipitation. The best process by SPS was at 12500C. The relative density, tensile strength and elongation of the alloy sintered by SPS reached 99.4%, 788.5MPa and 6.4%, respectively. The grain size was about 100µm and the microstructure was uniform. The fracture morphology of the alloy was ductile rupture. Compared to PM, Ti-24Nb-4Zr-7.9Sn alloy fabricated by SPS exhibited better comprehensive properties and more uniform microstructure.

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Enhanced thermoelectric properties of Au nanodot-included Bi2Te3 nanotube composites

Journal of Materials Chemistry C ◽

10.1039/c5tc03934g ◽

2016 ◽

Vol 4 (6) ◽

pp. 1313-1319 ◽

Cited By ~ 27

Author(s):

Eunsil Lee ◽

Jieun Ko ◽

Jong-Young Kim ◽

Won-Seon Seo ◽

Soon-Mok Choi ◽

...

Keyword(s):

Spark Plasma Sintering ◽

Thermoelectric Properties ◽

Raw Materials ◽

Bottom Up ◽

Plasma Sintering ◽

Nanotube Composites ◽

Spark Plasma ◽

Scalable Synthesis

Herein, we report on a scalable synthesis of Au nanodot (Au-ND)/Bi2Te3 nanotube (BT-NT) nanocomposites by the bottom-up synthesis of hybrid raw materials and subsequent spark plasma sintering, and their thermoelectric properties were systematically compared with those of Au-doped Bi2Te3 compounds.

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Fabrication of diamond–SiC–TiC composite by a spark plasma sintering-reactive synthesis method

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2014.08.006 ◽

2015 ◽

Vol 35 (1) ◽

pp. 69-76 ◽

Cited By ~ 13

Author(s):

Xiaolin Zhou ◽

Yanhui Wang ◽

Tianheng Li ◽

Xiaohu Li ◽

Xiaozhe Cheng ◽

...

Keyword(s):

Spark Plasma Sintering ◽

Synthesis Method ◽

Reactive Synthesis ◽

Plasma Sintering ◽

Spark Plasma

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Spark Plasma Sintering of SiC Ceramics Based on Natural Renewable Raw Materials

Materials Science Forum ◽

10.4028/www.scientific.net/msf.992.759 ◽

2020 ◽

Vol 992 ◽

pp. 759-763

Author(s):

A. Zavjalov ◽

Nikolai P. Shapkin ◽

Evgenii K. Papynov

Keyword(s):

Spark Plasma Sintering ◽

Raw Materials ◽

Inert Atmosphere ◽

Raw Material ◽

Strength Analysis ◽

Organic Part ◽

Sic Ceramics ◽

Plasma Sintering ◽

Sic Ceramic ◽

Spark Plasma

The paper presents the results of obtaining silicon carbide SiC ceramic from organic raw materials by the reaction spark plasma sintering (SPS). Annealed rice husks are used as an organic raw material. A feature of the batch preparation for sintering is annealing in an inert atmosphere. Thus, the carbon source C for further reaction with silicon dioxide SiO2 to form SiC is the organic part of the rice husk. This way let to achieve the most uniform reacting components mixing directly at the stage of annealing the husks and to exclude the mixing stage from the technological process. The reaction SPS method was used for the first time for the production of ceramic material from such a raw material. The results of a comprehensive study of the obtained material by various methods are presented in the article: scanning electron microscopy, Raman spectroscopy, X-ray phase analysis, strength analysis, and others.

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Preparation and Microstructure of a ZrB2?SiC Composite Fabricated by the Spark Plasma Sintering?Reactive Synthesis (SPS?RS) Method

Journal of the American Ceramic Society ◽

10.1111/j.1551-2916.2007.02050.x ◽

2007 ◽

Vol 0 (0) ◽

pp. 070918221104010-??? ◽

Cited By ~ 5

Author(s):

Yuan Zhao ◽

Lian-Jun Wang ◽

Guo-Jun Zhang ◽

Wan Jiang ◽

Li-Dong Chen

Keyword(s):

Spark Plasma Sintering ◽

Reactive Synthesis ◽

Plasma Sintering ◽

Spark Plasma

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Ti3SiC2–(Ti3SiC2–SiC) functionally graded materials by spark plasma sintering reactive synthesis method Part 1 – gradient optimizations

Materials Technology ◽

10.1179/175355509x12608871788031 ◽

2010 ◽

Vol 25 (5) ◽

pp. 276-282 ◽

Cited By ~ 2

Author(s):

W. Jiang ◽

J. F. Zhang ◽

L. J. Wang ◽

R. Tu ◽

X. Q. Yang ◽

...

Keyword(s):

Spark Plasma Sintering ◽

Functionally Graded Materials ◽

Synthesis Method ◽

Functionally Graded ◽

Graded Materials ◽

Reactive Synthesis ◽

Plasma Sintering ◽

Spark Plasma

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B4C-TiB2 Composite Ceramics with Ultra-High Fracture Toughness Fabricated by Spark Plasma Sintering

10.21203/rs.3.rs-84795/v1 ◽

2020 ◽

Author(s):

Xingheng Yan ◽

Xingui Zhou ◽

Honglei Wang

Keyword(s):

Fracture Toughness ◽

Spark Plasma Sintering ◽

Bending Strength ◽

Raw Materials ◽

Composite Ceramic ◽

High Fracture Toughness ◽

Composite Ceramics ◽

High Fracture ◽

Plasma Sintering ◽

Spark Plasma

Abstract B4C-TiB2 composite ceramics with ultra-high fracture toughness were successfully prepared via spark plasma sintering using B4C and 30 vol.% Ti3SiC2 as raw materials at different sintering temperatures. The results show that compared with pure B4C ceramics sintered by SPS, the flexural strength and fracture toughness are significantly improved, especially the fracture toughness has been improved by leaps and bounds. When the sintering temperature is 1900 ℃, the B4C-TiB2 composite ceramic has the best comprehensive mechanical properties: hardness, bending strength and fracture toughness are 27.28 GPa, 405.11 MPa and 18.94 MPa·m1/2, respectively. The main two reasons for the ultra-high fracture toughness are the formation of TiB2 three-dimensional network covering the whole composites, and the existence of lamellar graphite at the grain boundary.

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