scholarly journals A Study on the Effect of Ultrafine SiC Additions on Corrosion and Wear Performance of Alumina-Silicon Carbide Composite Material Produced by SPS Sintering

Metals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1337
Author(s):  
Ntebogeng F. Mogale ◽  
Wallace R. Matizamhuka
Keyword(s):  
Silicon Carbide ◽  
Powder Processing ◽  
Open Circuit ◽  
Transgranular Fracture ◽  
Corrosion Performance ◽  
Wear Performance ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sic Composites ◽  
Fracture Morphologies

Alumina-silicon carbide (Al2O3–SiC) composites of varying compositions (15, 20, 25 and 30 vol.%)–SiC were produced by the ball milling of Al2O3 and SiC powders, followed by spark plasma sintering. The samples were sintered at a temperature and pressure of 1600 °C and 50 MPa, respectively, thermally etched at 1400 °C and mechanically fractured by hammer impact. The effect of SiC additions to monolithic Al2O3 on the densification response, microstructural and phase evolutions, and fracture morphologies were evaluated. The wear performance of the composites using a ball-on-sample configuration was evaluated and compared to that of monolithic Al2O3. In addition, the corrosion performance of the composites in a 3.5% NaCl solution was examined using open circuit potential and potentiodynamic polarization assessments. SiC additions to monolithic Al2O3 delayed densification due to the powder agglomeration resulting from the powder processing. SiC particles were observed to be located inside Al2O3 grains and some at grain boundaries. Intergranular and transgranular fracture modes were observed on the fractured composite surfaces. The study has shown that the Al2O3–SiC composite is a promising material for improved wear resistance with SiC content increments higher than 15 vol.%. Moreover, the increase in SiC content displayed no improvement in corrosion performance.

scholarly journals Fabrication of Cu-Based SiC Composites by Spark Plasma Sintering of Cu-Nitrate Coated SiC Powders

2017 ◽  
Vol 62 (2) ◽  
pp. 1407-1410
Author(s):  
Y.-K. Jeong ◽  
Y.S. Kim ◽  
S.-T. Oh
Keyword(s):  
Spark Plasma Sintering ◽  
Powder Mixture ◽  
Powder Processing ◽  
Sem Analysis ◽  
Homogeneous Microstructure ◽  
Dense Microstructure ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sic Composites

AbstractAn optimum route to fabricate the Cu-based SiC composites with homogeneous microstructure was investigated. Three methods for developing the densified composites with sound interface between Cu and SiC were compared on the basis of the resulting microstructures. Starting with three powder mixtures of elemental Cu and SiC, elemental Cu and PCS coated SiC or PCS and Cunitrate coated SiC was used to obtain Cu-based SiC composites. SEM analysis revealed that the composite fabricated by spark plasma sintering using elemental SiC and Cu powder mixture showed inhomogeneous microstructure. Conversely, dense microstructure with sound interface was observed in the sintered composites using powder mixture of pre-coated PCS and Cu-nitrate onto SiC. The relationship between powder processing and microstructure was discussed based on the role of coating layer for the wettability

scholarly journals Investigations of Interface Properties in Copper-Silicon Carbide Composites

2017 ◽  
Vol 62 (2) ◽  
pp. 1315-1318 ◽  
Author(s):  
M. Chmielewski ◽  
K. Pietrzak ◽  
A. Strojny-Nędza ◽  
D. Jarząbek ◽  
S. Nosewicz
Keyword(s):  
Silicon Carbide ◽  
Vapour Deposition ◽  
Adhesion Force ◽  
Laser Flash ◽  
Copper Matrix ◽  
Flash Method ◽  
Plasma Sintering ◽  
Metal Ceramic ◽  
Spark Plasma ◽  
Sic Composites

AbstractThis paper analyses the technological aspects of the interface formation in the copper-silicon carbide composite and its effect on the material’s microstructure and properties. Cu-SiC composites with two different volume content of ceramic reinforcement were fabricated by hot pressing (HP) and spark plasma sintering (SPS) technique. In order to protect SiC surface from its decomposition, the powder was coated with a thin tungsten layer using plasma vapour deposition (PVD) method. Microstructural analyses provided by scanning electron microscopy revealed the significant differences at metal-ceramic interface. Adhesion force and fracture strength of the interface between SiC particles and copper matrix were measured. Thermal conductivity of composites was determined using laser flash method. The obtained results are discussed with reference to changes in the area of metal-ceramic boundary.

Spark plasma sintering of ZrB2–SiC composites with in-situ reaction bonded silicon carbide

2014 ◽  
Vol 40 (1) ◽  
pp. 821-826 ◽  
Author(s):  
Alberto Ortona ◽  
Miguel A. Lagos ◽  
Giulio Scocchi ◽  
Jorge Barcena
Keyword(s):  
Silicon Carbide ◽  
Spark Plasma Sintering ◽  
In Situ Reaction ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sic Composites

scholarly journals Flash (Ultra-Rapid) Spark-Plasma Sintering of Silicon Carbide

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Eugene A. Olevsky ◽  
Stephen M. Rolfing ◽  
Andrey L. Maximenko
Keyword(s):  
Silicon Carbide ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

Resonant ultrasound spectroscopy of silicon carbide ceramics SiC‒AlN

2021 ◽  
pp. 136-140
Author(s):  
E. G. Pashuk ◽  
G. D Kardashova ◽  
Sh. A. Khalilov
Keyword(s):  
Silicon Carbide ◽  
Elastic Moduli ◽  
Ultrasonic Spectroscopy ◽  
Resonant Ultrasound Spectroscopy ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Complete Set ◽  
Resonant Ultrasound ◽  
Carbide Ceramics ◽  
Silicon Carbide Ceramics

The paper discusses the possibility of using resonant ultrasonic spectroscopy (RUS) as a source of information for the physics and technology of obtaining silicon carbide ceramics by the example of samples of the composition SiC ‒ 25 % AlN, obtained by the method of spark plasma sintering. The possibility of obtaining a complete set of elastic moduli (EM) of samples with an error of less than 1 % is shown. At the same time, the requirements for surface quality are significantly reduced. The revealed functional relationship between EM and porosity makes it possible to create a non-destructive method of porosity control and calculate the elastic moduli at zero porosity (i. e., the elastic modulus of the ceramic matrix EM0). Comparison of EM0 samples obtained at different parameters of the technological process allows determining their optima values..

Consolidation of SiC Powder Coated with SiO2 Nanolayer by Spark Plasma Sintering

2014 ◽  
Vol 616 ◽  
pp. 32-36 ◽  
Author(s):  
Zhen Hua He ◽  
Hirokazu Katsui ◽  
Rong Tu ◽  
Takashi Goto
Keyword(s):  
Silicon Carbide ◽  
Chemical Vapor Deposition ◽  
Relative Density ◽  
Spark Plasma Sintering ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Plasma Sintering ◽  
Spark Plasma

Silica (SiO2) nanolayer was coated on silicon carbide (SiC) powder by rotary chemical vapor deposition (RCVD). The SiC/SiO2 composite were consolidated by spark plasma sintering (SPS) at 1923 K using the SiO2 coated SiC powder. The relative density and hardness of the SiC/SiO2 composites increased with increasing SiO2 content, and were 97% and 17 GPa, respectively, at SiO2 content of 22 mass%. The relative density and hardness of a composite consolidated using the mixture powders of SiC and SiO2 (22 mass%) at 1923 K were 81% and 8 GPa, respectively.

Reactive, nonreactive, and flash spark plasma sintering of Al 2 O 3 /SiC composites—A comparative study

2019 ◽  
Vol 103 (1) ◽  
pp. 520-530
Author(s):  
Karen S. Torosyan ◽  
Alexey S. Sedegov ◽  
Kirill V. Kuskov ◽  
Mohammad Abedi ◽  
Dmitry I. Arkhipov ◽  
...  
Keyword(s):  
Comparative Study ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sic Composites
Sign in / Sign up

Export Citation Format

Share Document