Effect of single-walled carbon nanotubes on thermal and electrical properties of silicon nitride processed using spark plasma sintering

Corral, Erica L.; Wang, Hsin; Garay, Javier E.; Munir, Zuhair A.; Barrera, Enrique V.

doi:10.1016/j.jeurceramsoc.2010.10.020

Cited by 56 publications

(26 citation statements)

References 33 publications

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“…[215] Also, the densification (a) (b) (c) of CNT/ceramic composites was investigated intensively showing the possibility of full densification with minimal decomposition of the CNTs and achieving special electrical and wear properties. [216][217][218][219][220][221][222][223] The structure and quality of the interfaces between organic and inorganic constituents plays a decisive role for the final properties of the composites. The formation of diamond from fullerene C60 without any catalysts was also possible in FAST/SPS run under moderate pressure of 50-80 MPa at 1150-1300°C with a heating rate of 100°C min À1 in vacuum, i.e., much "milder" conditions than usually required for diamond production.…”

Section: Non-equilibrium Materialsmentioning

confidence: 99%

Field‐Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments

et al. 2014

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Field-assisted sintering technology/Spark plasma sintering is a low voltage, direct current (DC) pulsed current activated, pressure-assisted sintering, and synthesis technique, which has been widely applied for materials processing in the recent years. After a description of its working principles and historical background, mechanical, thermal, electrical effects in FAST/SPS are presented along with the role of atmosphere. A selection of successful materials development including refractory materials, nanocrystalline functional ceramics, graded, and non-equilibrium materials is then discussed. Finally, technological aspects (advanced tool concepts, temperature measurement, finite element simulations) are covered.

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Section: Non-equilibrium Materialsmentioning

confidence: 99%

Field‐Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments

et al. 2014

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“…Due to the excellent mechanical and thermal properties, MWCNTs have been proved to be very effective in enhancing the mechanical properties of several materials, such as alumina and silicon nitride [14,15]. Tian et al [16] reported that ZrB 2 -SiC nanocomposite ceramics toughened by CNTs were fabricated by hot-pressing at 1900 1C for 1 h under 30 MPa.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of spark plasma sintered ZrB2–SiC–MWCNT composites

Lin

Huang

Zhang

et al. 2015

Ceramics International

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“…4,30 Sample density was found to increase with isotherm temperature (e.g., 2.45 and 2.63 g/cm 3 for 1700°C and 1800°C). Sintering temperature was explored to maximize densification.…”

Section: Resultsmentioning

confidence: 99%

“…This has led to multiple reports of negligible mechanical property enhancement through nanotube incorporation. [1][2][3][4]12,14 Nevertheless, several efforts have examined low temperature routes for synthesizing ceramic matrices, opening the door for in situ development of nanotube infiltrated ceramics. 12 Thus, most work in CNT-filled ceramics have explored dry and colloidal mixing of ceramic and nanotube powders before monolith densification.…”

Section: Introductionmentioning

confidence: 99%

“…Successful mechanical reinforcement of a ceramic matrix by CNTs is contingent on three factors: (1) maintaining dispersion, (2) fostering interactions between the nanotube surface and ceramic matrix, and (3) ensuring nanotube survival at elevated processing temperatures. [1][2][3][4] While unmodified nanotubes are readily dispersed in N,Ndimethylformamide and 1,2-dichlorobenzene, 5 these solvents are rarely used for nanocomposite preparation due to their high boiling point. Consequently, effective nanotube dispersability relies on either covalent modification or surfactantassisted dispersion.…”

Section: Introductionmentioning

confidence: 99%

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Polymer Precursor‐Based Preparation of Carbon Nanotube–Silicon Carbide Nanocomposites

et al. 2011

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Multiwalled carbon nanotubes were dispersed in a silicon carbide matrix to examine nanotube influence on mechanical properties of the resulting composite. The ceramic matrix was generated through high temperature conversion of poly(methylsilyne), a preceramic polymeric precursor. Nanotube alkylation was explored using two functionalization schemes: organic peroxide workup and alkyllithium displacement of fluorinated nanotubes, which promoted extensive mixing within precursor solutions, thereby ensuring nanotube dispersion within the polymer matrix while facilitating interfacial bonding. The former scheme was less effective at displacing inner nanotube shell bound fluorine and resulted in lower alkyl chain grafting density on the outer shell. Polymer nanocomposites were pyrolyzed and consolidated using an optimized spark plasma sintering scheme to generate fully densified ceramics. The pure polymer‐derived ceramic displayed exceptional Young's modulus and Vickers microhardness of 126 ± 12 and 9.6 ± 0.5 GPa, respectively, while maintaining a fracture toughness of 2.8 ± 0.3 MPa·m1/2. Increased sintering time further augmented the fracture toughness to 3.6 ± 0.4 MPa·m1/2, approaching the 4 MPa·m1/2 that characterizes pure silicon carbide, while maintaining both Young's modulus and microhardness. Nanotube addition resulted in some loss of the intrinsic mechanical properties, but enhanced monolith damage tolerance behavior, raising the Vickers indent force needed to induce cracks to an excess of 98.1 N in contrast to the pure polymer‐derived sample, which began crack propagation below 49.0 N.

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Effect of single-walled carbon nanotubes on thermal and electrical properties of silicon nitride processed using spark plasma sintering

Cited by 56 publications

References 33 publications

Field‐Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments

Field‐Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments

Microstructure and mechanical properties of spark plasma sintered ZrB2–SiC–MWCNT composites

Polymer Precursor‐Based Preparation of Carbon Nanotube–Silicon Carbide Nanocomposites

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