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  • Fabrication of SiC Composites with Synergistic Toughening of

    The SiC composites with synergistic toughening of carbon whisker and in situ 3C-SiC nanowire have been fabricated by hot press sinter technology and annealed treatment technology. Effect of annealed time on

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  • Mechanical Properties of Alumina/Silicon Carbide Whisker

    2005/03/08· SiC p and SiC w are the ideal inorganic fillers for reinforcing and toughening the metal matrix and ceramics due to their high mechanical performance

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  • King Of Whiskers Silicon Carbide (SiC Whisker) And Its

    After toughening and strengthening by SiC whisker, the toughness can reach above 9MPa·m1/2, and the strength can reach 600-900Mpa. The use of silicon carbide whiskers for further broaden the use of alumina has been applied to wear parts, cutting tools and

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  • Effect of the size of Sic whiskers on the toughness of

    The effect of the dimensions of SiC whiskers on the strength and toughness of hot-pressed composites with a 20% volume fraction of whisker reinforcement was studied. It was established that the mechanical properties of the composites were improved only on introducing whiskers with the diameters, within 1.5–2.5 μm. These materials also exhibited a higher resistance to crack propagation

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  • Toughening Behavior in SiC-Whisker-Reinforced Alumia

    2006/10/04· In terms of synergistic toughening and strengthening effect of the whiskers and particles, Al 2 O 3 -SiC w particle ceramic material system with higher performance has been studied [10,11].

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  • [PDF]Synergistically Toughening Effect of SiC Whiskers and

    The synergism of toughening between SiC whiskers and nanoparticles is analyzed when comparing with the composites by adding SiC whiskers or SiC nanoparticles individually. 2 Experimental Procedures 2.1 Raw materials. The Al2O3powders were bought from Zibo Dongchangye Co. Ltd., the average grain size was 0.5 μm and the purity was 99.99%.

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  • Effects of SiC whiskers on the mechanical properties and

    Variations in bending strength and fracture toughness of the RBSC ceramics with pre-coated SiC whiskers with mass fractions ranging from 0 to 20 wt%. The fracture toughness and bending strength of the SiC w /RBSC ceramics gradually increased with an increase in SiC w

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  • Effects of SiC whisker treatments on the performance of SiC

    1992/10/01· The U.S. Department of Energy's Office of Scientific and Technical Information OSTI.GOV Conference: Effects of SiC whisker treatments on the performance of SiC

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  • Effect of nano and micro SiC particles on the microstructure

    In this research, effect of SiC particles size on the microstructure, densification and fracture toughness of ZrB 2-SiC composite prepared by spark plasma sintering (SPS) method was evaluated.For this purpose, ZrB 2-30vol% SiC composites were consolidated by SPS method, using SiC powders with different initial particle sizes (45 nm, 80 nm and 25 μm).

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  • Synergistically toughening effect of SiC whiskers and

    Synergistically toughening effect of SiC whiskers and nanoparticles in Al2O3-based composite ceramic cutting tool material June 2016 Chinese Journal of Mechanical Engineering 29(5)

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  • [PDF]Synthesis of SiC whiskers by VLS and VS process

    SiC whiskers are nearly single crystals and expected to have very high tensile strengths [6, 7], which makes them excellent candidates for reinforcement and toughening of ceramic and glass matrix composites [8–10].

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  • Effect of the size of Sic whiskers on the toughness of

    The effect of the dimensions of SiC whiskers on the strength and toughness of hot-pressed composites with a 20% volume fraction of whisker reinforcement was studied. It was established that the mechanical properties of the composites were improved only on introducing whiskers with the diameters, within 1.5–2.5 μm. These materials also exhibited a higher resistance to crack propagation

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  • Processing and Characterization of SiC‐Whisker‐Reinforced

    1993/02/01· Brittle monolithic alumina can be reinforced with highstrength single-crystal SiC whiskers with the effect of increasing fracture toughness. In this study, well-mixed and nearly fully dense SiC whisker/alumina composites were 1/2

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  • Synergistic enhancement effect of SiC whisker and nano

    2020/08/01· Synergistically toughening effect of SiC whiskers and nanoparticles in Al2O3-based composite ceramic cutting tool material Article Jun 2016 Xuefei Liu

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  • Mechanical properties of Al2O3 and Al2O3 + ZrO2 ceramics

    1993/01/01· The effect of the SiC whisker content on the mechanical properties of Al2O3 and Al2O3 + 20 vol% ZrO2 (2 mol% Y2O3) ceramic composites has been investigated. It is shown that the strength and fracture toughness of the composites are increased by the addition of 0–30 vol% SiC whiskers with only one exception that 30 vol% SiC whisker leads to a decrease in the flexure strength. The addition

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  • Processing and characterization of SiC-whisker-reinforced

    1993/02/01· The U.S. Department of Energy's Office of Scientific and Technical Information OSTI.GOV Journal Article: Processing and characterization of SiC-whisker-reinforced alumina-matrix composites

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  • - Shandong

    Synergistically toughening effect of SiC whiskers and nanoparticles in Al 2 O 3-based composite ceramic cutting tool material: Chinese Journal of Mechanical Engineering, v 29, n 5, p 977-982, 2016(SCI、EI)

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  • In-situ fabricated TiB 2 particle-whisker synergistically

    2015/01/30· SiC whiskers and Ti(C, N) particles synergistically toughened Al 2 O 3 matrix ceramic composites for cutters[J]. Journal of Materials Science & Engineering,2004, 22(1): 59–64. (in Chinese)

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  • Synergistically toughening effect of SiC whiskers and

    While no attempts have been made to add SiC whiskers and SiC nanoparticles together into the ceramic matrix and the synergistically toughening effects of them have not been studied. An Al 2 O 3 -SiC w -SiC np advanced ceramic cutting tool material is fabricated by adding both one-dimensional SiC whiskers and zero-dimensional SiC nanoparticles into the Al 2 O 3 matrix with an effect

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  • SiC whiskers‐reinforced polyimide aerogel composites with

    2020/09/07· The SiCw in aerogel function as shrinkage inhibitor and high temperature stabilizer. The addition of SiC w exhibits obvious enhancement and toughening effect, the compressive strength of the PI aerogel composites increases from 1.09 to 1.96 MPa.

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  • (PDF) Toughened ZrB2-based ceramics through SiC whisker

    ConclusionsZrB 2 -based materials reinforced with 10-20 vol.% SiC whiskers or SiC short fibers were hot-pressed at temperature between 1650 and 1730 • C. The addition of Si 3 N 4 as sintering additive allowed achieving densities

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  • Processing and Characterization of SiC‐Whisker‐Reinforced

    1993/02/01· Brittle monolithic alumina can be reinforced with highstrength single-crystal SiC whiskers with the effect of increasing fracture toughness. In this study, well-mixed and nearly fully dense SiC whisker/alumina composites

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  • Mechanical properties and interfacial microstructure of SiC

    It reveals that the ZrO2(2 mol% Y2O3) composites have a good toughening effect by incorporating SiC whiskers. HREM observations indicate that the whiskers

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  • Self-lubricating ceramic tool materials synergistically

    The SiC whiskers played a toughening role, while nano [email protected] coated particles reduced the porosity, the compactness and also filled between the

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  • Zirconia ceramic article toughened with SIC whiskers (Patent

    1989/02/14· @article{osti_6265458, title = {Zirconia ceramic article toughened with SIC whiskers}, author = {Chyung, K and Gadkaree, K P and Ketcham, T D and Wusirika, R R}, abstractNote = {A ceramic composite is described characterized by improved fracture toughness comprising a matrix phase consisting essentially of tetragonal ZrO/sub 2/ and a ZrO/sub 2/ stabilizer selected from the group

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  • Microstructure and Toughening Mechanisms in Spark Plasma

    Microstructure and Toughening Mechanisms in Spark Plasma-Sintered ZrB 2 Ceramics Reinforced by SiC Whiskers or SiC-Chopped Fibers Authors Stefano Guicciardi, CNR-ISTEC, Institute of Science and Technology for

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  • Synergistic strengthening and toughening of zircon ceramics

    1997/01/01· SiC(w) and microcrack toughening can interact with each other when they act in the zircon matrix at the same time, resulting in the clear positive synergistic toughening effect. was found that the fracture surface of the compos- ite

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  • Synergistic enhancement effect of SiC whisker and nano

    2020/08/01· Synergistically toughening effect of SiC whiskers and nanoparticles in Al2O3-based composite ceramic cutting tool material Article Jun 2016 Xuefei Liu

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  • (PDF) Toughened ZrB2-based ceramics through SiC whisker

    ConclusionsZrB 2 -based materials reinforced with 10-20 vol.% SiC whiskers or SiC short fibers were hot-pressed at temperature between 1650 and 1730 • C. The addition of Si 3 N 4 as sintering additive allowed achieving densities

    MORE
  • Mechanical properties and interfacial microstructure of SiC

    It reveals that the ZrO2(2 mol% Y2O3) composites have a good toughening effect by incorporating SiC whiskers. HREM observations indicate that the whiskers

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  • High temperature mechanical properties of Al2O3-based

    A new kind of Al 2 O 3-based ceramic tool material (AW20P5) synergistically toughened by SiC whiskers and nanoparticles was fabricated with good mechanical properties at room temperature, and then the high temperature mechanical properties and their evolution mechanisms from 700 °C to 1200 °C of AW20P5 were investigated compared with the room temperature mechanical properties.

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  • Processing and characterization of SiC-whisker-reinforced

    1993/02/01· The U.S. Department of Energy's Office of Scientific and Technical Information OSTI.GOV Journal Article: Processing and characterization of SiC-whisker-reinforced alumina-matrix composites

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  • [PDF]Effects of in situ synthesized mullite whisker on mechanical

    2020/05/27· SiC particle size on mechanical properties of in situ synthesized mullite whisker reinforced Al 2O 3 –SiC composite. The selected sintering temperature was 1350 ° C, 1400 ° C, 1450 ° C, 1500 ° C, 1550 ° C and 1600 ° C.

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  • SiC Whisker Scientific.Net

    Abstract: Silicon powder and phenolic resin were used as raw materials to produce porous silicon carbide (SiC) ceramics, with SiC whiskers (SiC w) as reinforcement additionally. Starting with the preparation of core-shell structure precursor powder through coat-mix method, and then by carrying out molding, carbonization and sintering processes, SiC w /SiC ceramic examples were produced.

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  • Fabrication and mechanical properties of Al2O3-SiCw-TiCnp

    Whiskers and nanoparticles are usually used as reinforcing additives of ceramic composite materials due to the synergistically toughening and strengthening mechanisms. In this paper, the effects of TiC nanoparticle content, particle size and preparation process on the mechanical properties of hot pressed Al 2 O 3 -SiC w ceramic tool materials were investigated.

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  • Effect of SiC whiskers on microstructure and mechanical

    That is, the fracture toughness and flexural strength synergistically affect the resistance to thermal stress of the MoSi 2 and MoSi 2 –SiCw composites. Fig. 6 shows the change of hardness values of the MoSi 2 –SiCw composites with increasing sintering temperature and time.

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  • "King of whiskers" silicon carbide (SiC whisker) and its related

    After toughening and strengthening by SiC whisker, the toughness can reach above 9MPa·m1/2, and the strength can reach 600-900Mpa. The use of silicon carbide whiskers for further broaden the use of alumina has been applied to wear parts, cutting tools and certain components of internal combustion engines.

    MORE
  • Silicon carbide whisker/alumina matrix composites; Effect of

    1990/02/01· The U.S. Department of Energy's Office of Scientific and Technical Information OSTI.GOV Journal Article: Silicon carbide whisker/alumina matrix composites; Effect of whisker surface treatment on fracture toughness

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  • (PDF) Effect of reinforcement geometry on the mechanical

    The Sic whiskers or platelets and A1203 powder were blended by liquid processing to form a slurry. This was then dried under agitation to produce a homogeneous powder. The total reinforcement content was maintained at 30%

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  • Anisotropic Etching of SiC Whiskers Nano Letters

    2005/10/11· Preferential etching of SiC whiskers in a mixture of hydrofluoric and nitric acids (3:1 ratio) at 100 °C results in the selective removal of cubic SiC and the formation of complex structures resembling a pagoda architecture. Possible mechanisms governing selective etching are discussed.

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