Microstructure and properties of Ti3SiC2/SiC nanocomposites fabricated by spark plasma sintering

Zhang, Jianfeng; Wu, Ting; Wang, Bijia; Jiang, Wan; Chen, Lidong

doi:10.1016/j.compscitech.2007.06.006

Cited by 64 publications

(21 citation statements)

References 19 publications

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“…The material transport in subsequent spark pulses is accentuated due to the greater electric current density in the necks and contacts than inside the body of each powder grain. The rate of material transport is enhanced through the application of an external compressive force [43] resulting in the plastic deformation of the powder grains at each interface [39] resulting in a flatter joint with lower electrical resistance. This process propagates throughout the matrix enhanced by the external pressure which induces plastic flow of the material to form a sintered cermet with a density that is very close the full theoretical density.…”

Section: Radioisotope Fuel Cermets and Encapsulationmentioning

confidence: 99%

Safe radioisotope thermoelectric generators and heat sources for space applications

O’Brien

Ambrosi

Bannister

et al. 2008

Journal of Nuclear Materials

210

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Section: Radioisotope Fuel Cermets and Encapsulationmentioning

confidence: 99%

Safe radioisotope thermoelectric generators and heat sources for space applications

O’Brien

Ambrosi

Bannister

et al. 2008

Journal of Nuclear Materials

210

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“…This permitted its wide application in aerospace, high temperature and pressure need, turbines, aircraft, building materials, desalination machined components and automobiles for quite a long time. Properties of aluminum can be improved by introducing nano-reinforcements such as SiC, which has excellent mechanical properties, including high hardness, strength, modulus of elasticity, wear resistance, oxidation resistance and corrosion resistance [17,27,28]. SiC is suitable for reinforcing aluminum because of its thermodynamic stability and good wettability with Al [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

“…Properties of aluminum can be improved by introducing nano-reinforcements such as SiC, which has excellent mechanical properties, including high hardness, strength, modulus of elasticity, wear resistance, oxidation resistance and corrosion resistance [17,27,28]. SiC is suitable for reinforcing aluminum because of its thermodynamic stability and good wettability with Al [27][28][29]. Al-based nanocomposites have successfully been synthesized by mechanical milling and spark plasma sintering [13,[30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Spark Plasma Sintered Aluminum Containing 1 wt.% SiC Nanoparticles

Aliyu

Saheb²,

Hassan³

et al. 2015

Metals

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Abstract:The low hardness and strength of aluminum, which limits its use in many industrial applications, could be increased through the addition of nanoparticles. However, the appropriate processing method and parameters should be carefully selected in order to achieve the desired improvement in properties. In this work, aluminum was reinforced with low weight fraction (1 wt.%) of SiC nanoparticles and consolidated through spark plasma sintering. The effect of processing parameters on the densification, microstructure, and properties of the processed material was investigated. Field Emission Scanning Electron Microscope (FE-SEM) equipped with Energy Dispersive X-ray Spectroscopy (EDS) facility was used to characterize the microstructure and analyze the reinforcement's distribution in sintered samples. Phases present were characterized through X-ray diffraction (XRD). A densimeter and a digital microhardness tester were used to measure the density and hardness, respectively. Compressive tests were performed using universal testing machine. A fully dense Al-1 wt.% SiC sample was obtained. Analysis of density and hardness values showed that the influence of applied pressure was more pronounced than heating rate while the influence of sintering temperature was more significant than sintering time. Within the range of parameters used, the highest values of the characterized properties were obtained at a sintering temperature of 600 °C, sintering time of 10 min, pressure of 50 MPa, and heating rate of 200 °C/min. OPEN ACCESSMetals 2015, 5 71

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“…In [22,63] slab models were employed to calculate surfaces coefficients via ab initio calculations. More recently, Zhang et al [72] and Reddy et al [47] have described methods to compute edges elastic properties in nanowires with sharp edges and in graphene sheets, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Effective properties of composites containing interface stress have been proposed in Duan et al [18,19,17,62], Sharma et al [52,53], and Le Quang and He [34], among others. For nanoparticles presenting sharp edges and corners, additional energetic terms related to line integrals can also be included [72]. This is especially important for 2D objects like graphene sheets [47].…”

Section: Introductionmentioning

confidence: 99%

Finite element model of ionic nanowires with size-dependent mechanical properties determined by ab initio calculations

Yvonnet

Mitrushchenkov

Chambaud

et al. 2011

Computer Methods in Applied Mechanics and Engineering

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International audienceA finite element procedure for modeling crystalline nanostructures such as nanowires is proposed. The size effects exhibited by nano objects are captured by taking into account a surface energy, following the classical Gurtin Murdoch surface elasticity theory. An appropriate variational form and a finite element approach are provided to model and solve relevant problems numerically.We describe a simplified technique based on projection operators for constructing the surface elements. The methodology is completed with a computational procedure based on ab initio calculations to extract elastic coefficients of general anisotropic surfaces. The FEM continuum model is validated by comparisons with complete ab initio models of nanowires with different diameters where size-dependent mechanical properties are observed. The FEM continuum model can then be used to model similar nanostructures in ranges of sizes or geometries where analytical or atomistic model are limited. The validated model is applied to the analysis of size effects in the bending of an AlN nanowire

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Microstructure and properties of Ti3SiC2/SiC nanocomposites fabricated by spark plasma sintering

Cited by 64 publications

References 19 publications

Safe radioisotope thermoelectric generators and heat sources for space applications

Safe radioisotope thermoelectric generators and heat sources for space applications

Microstructure and Properties of Spark Plasma Sintered Aluminum Containing 1 wt.% SiC Nanoparticles

Finite element model of ionic nanowires with size-dependent mechanical properties determined by ab initio calculations

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