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

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.

Preparation of Fine-Grained CeO2–SiC Ceramics for Inert Fuel Matrices by Spark Plasma Sintering

2020 ◽  
Vol 56 (12) ◽  
pp. 1307-1313
Author(s):  
L. S. Alekseeva ◽  
A. V. Nokhrin ◽  
M. S. Boldin ◽  
E. A. Lantsev ◽  
A. I. Orlova ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Fine Grained ◽  
Sic Ceramics ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Pore-size control in porous SiC ceramics prepared by spark plasma sintering

2012 ◽  
Vol 120 (1402) ◽  
pp. 243-247 ◽  
Author(s):  
Mikinori HOTTA ◽  
Hideki KITA ◽  
Hiroyuki MATSUURA ◽  
Naoya ENOMOTO ◽  
Junichi HOJO
Keyword(s):  
Pore Size ◽  
Spark Plasma Sintering ◽  
Size Control ◽  
Sic Ceramics ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Porous Sic ◽  
Pore Size Control

Densification and properties of ZrO2 fiber toughed ZrB2–SiC ceramics via spark plasma sintering

2015 ◽  
Vol 644 ◽  
pp. 204-209 ◽  
Author(s):  
Jia Lin ◽  
Yu Huang ◽  
Houan Zhang ◽  
Yihang Yang ◽  
Tuyuan Zhao
Keyword(s):  
Spark Plasma Sintering ◽  
Sic Ceramics ◽  
Plasma Sintering ◽  
Spark Plasma

Evaluation of an original use of spark plasma sintering to laminate carbon fibres reinforced aluminium

2017 ◽  
Vol 52 (16) ◽  
pp. 2149-2161 ◽  
Author(s):  
Christophe Perron ◽  
Corinne Arvieu ◽  
Eric Lacoste
Keyword(s):  
Electron Microscopy ◽  
Spark Plasma Sintering ◽  
Raw Material ◽  
Foil Thickness ◽  
Reactive System ◽  
Carbide Formation ◽  
Carbon Fibres ◽  
Liquid Aluminium ◽  
Plasma Sintering ◽  
Spark Plasma

An alternative route for producing aluminium matrix reinforced with continuous carbon fibres is proposed in this paper. On the one hand, liquid aluminium does not wet carbon; on the other hand, however, the two form a reactive system leading to carbide formation. A novel way to obtain continuous carbon fibre-reinforced aluminium was investigated, using spark plasma sintering with aluminium foils as raw material. Sintering parameters were adjusted to achieve the effective welding of aluminium foils and penetration of the metal between the filaments. A quality assessment of the fibre/aluminium coupling is presented. Interfaces were then investigated by scanning electron microscopy, transmission electron microscopy and energy-dispersive ray spectroscopy. An effective cohesion of fibres with the matrix was shown. The manageable fibre positioning could result in unidirectional architecture and reinforcement rate should be handled through foil thickness and yarn properties. Using tensile tests, cohesion between aluminium and carbon fibres can be quantified.

Spark plasma sintering of ZrC–SiC ceramics with LiYO2 additive

2013 ◽  
Vol 39 (5) ◽  
pp. 5467-5476 ◽  
Author(s):  
Ljiljana Kljajević ◽  
Snežana Nenadović ◽  
Miloš Nenadović ◽  
Devendraprakash Gautam ◽  
Tatjana Volkov-Husović ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Sic Ceramics ◽  
Plasma Sintering ◽  
Spark Plasma

Biomedical Ti-24Nb-4Zr-7.9Sn Alloy Fabricated by Conventional Powder Metallurgy and Spark Plasma Sintering

2012 ◽  
Vol 520 ◽  
pp. 208-213 ◽  
Author(s):  
Shi Bo Guo ◽  
Chun Bo Cai ◽  
Yong Qiang Zhang ◽  
Yong Xiao ◽  
Xuan Hui Qu
Keyword(s):  
Tensile Strength ◽  
Powder Metallurgy ◽  
Relative Density ◽  
Spark Plasma Sintering ◽  
Raw Materials ◽  
Fracture Morphology ◽  
Sintering Process ◽  
Comprehensive Properties ◽  
Plasma Sintering ◽  
Spark Plasma

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.

scholarly journals The Effect of SiC Content on Microstructure and Microwave Heating Rate of h-BN/SiC Ceramics Fabricated by Spark Plasma Sintering

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1909 ◽  
Author(s):  
Huilin Lun ◽  
Yi Zeng ◽  
Xiang Xiong ◽  
Lei Zhao ◽  
Dongling Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Relative Density ◽  
Heating Rate ◽  
Spark Plasma Sintering ◽  
Hexagonal Boron Nitride ◽  
Molar Ratio ◽  
Molar Ratios ◽  
Sic Ceramics ◽  
Plasma Sintering ◽  
Spark Plasma

Hexagonal boron nitride/silicon carbide (h-BN/SiC) ceramics were fabricated by a spark plasma sintering (SPS) method. Phase and microstructure of ceramics were characterized and observed, respectively, using the X-ray diffraction, scanning electron microscope and electron probe microanalysis. The effect of molar ratios of SiC to h-BN on the microstructure, relative density, hardness, thermal conductivity, and the heating rate by microwaves on the ceramics were investigated. The results showed that the orientation of flake-like h-BN was significantly influenced by SiC content in h-BN/SiC ceramics. With the increasing of SiC content, the h-BN flakes gradually became an isotropic distribution from the preferred orientation aligning in a SPS pressure direction. The relative density of h-BN/SiC ceramics was 97.6 ± 0.9% at a molar ratio of SiC to h-BN of 40/60 mol%. The preferential orientation of h-BN flakes contributed to a relatively high thermal conductivity along the SPS pressure direction, which was beneficial to increasing the heating rate of h-BN/SiC ceramics in microwave fields.

Enhanced thermoelectric properties of Au nanodot-included Bi2Te3 nanotube composites

2016 ◽  
Vol 4 (6) ◽  
pp. 1313-1319 ◽  
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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