In-situ measurement of SiC/Si interfacial tensile strength of reaction bonded SiC/Si composite

Hsu, Chun‐Yen; Zhang, Yuying; Xie, Yungsong; Deng, Fei; Karandikar, Prashant; Xiao, John Q.; Ni, Chaoying

doi:10.1016/j.compositesb.2019.107116

Cited by 11 publications

(4 citation statements)

References 21 publications

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“…6-7 GPa [34], much larger than that of 22.7 MPa estimated by Nutt and King [35]. More recently, Hsu et al measured an interfacial tensile strength value of 4.3 GPa in reaction bonded SiC/Si ceramic composites [36]. This value is about five times lower than those of pure SiC, crystalline or amorphous Si.…”

Section: Introductionmentioning

confidence: 81%

Thermostructural Characterization of Silicon Carbide Nanocomposite Materials via Molecular Dynamics Simulations

Ortiz-Roldan

Montero‐Chacón

García-Pérez

et al. 2021

Advanced Composite Materials

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In this paper, we investigate the thermostructural properties of a type of silicon-based nanomaterials, which we refer to as SiC@Si nanocomposites, formed by SiC crystalline nanoparticles (with the cubic phase), embedded within an amorphous Si matrix. We have followed an in silico approach to characterize the mechanical and thermal behaviour of these materials, by calculating the elastic constants, uniaxial stress-strain curves, coefficients of thermal expansion, and specific heats, at different temperatures, using interatomic potential calculations. The results obtained from our simulations suggest that this type of material presents enhanced thermal resistance features, making it suitable to be used in devices subjected to big temperature changes, such as heat sinks in micro and nanoelectronics, solar energy harvesters at high temperatures, power electronics, or in other applications in which good thermomechanical properties are required.

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Section: Introductionmentioning

confidence: 81%

Thermostructural Characterization of Silicon Carbide Nanocomposite Materials via Molecular Dynamics Simulations

Ortiz-Roldan

Montero‐Chacón

García-Pérez

et al. 2021

Advanced Composite Materials

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“…This process will cause weight loss and crack initiations in the matrix, leading to acceleration of SiC-SiC strength reduction [10]. The chemical interactions between composite and air can also affect the mechanical properties of SiC-SiC at high temperature [11,12]. SiC matrix would form a glass phase at high temperature, which wraps the fiber and enhance the interface bonding [25].…”

Section: Methodsmentioning

confidence: 99%

“…The results show that the fiber-matrix debonding behavior depends strongly on the nature of the carbon on the SiC fiber surface, which is different according to the SiC fiber. Hsu et al measured the interface tensile strength of SiC/Si directly for the first time by taking advantage of the FIB method [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Interface Coating on High Temperature Mechanical Properties of SiC–SiC Composite Using Domestic Hi–Nicalon Type SiC Fibers

et al. 2020

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Here we show that when the temperature exceeded 1200 °C, the tensile strength drops sharply with change of fracture mode from fiber pull-out to fiber-break. Theoretical analysis indicates that the reduction of tensile strength and change of fracture mode is due to the variation of residual radial stress on the fiber–matrix interface coating. When the temperature exceeds the preparation temperature of the composites, the residual radial stress on the fiber–matrix interface coating changes from tensile to compressive, leading to the increase of the interface strength with increasing temperature. The fracture behavior of SiC–SiC composites changes from ductile to brittle when the strength of fiber–matrix interface coating exceeds the critical value. Theoretical analysis predicts that the high temperature tensile strength can increase with a decrease in fiber–matrix interface thickness, which is verified by experiments.

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“…In the Si–SiC composite, the homogeneously dispersed fine SiC particles are meant to act as “stress sinker” and to deflect/suppress the particle-to-particle crack propagation. SiC is regarded as a suitable lightweight reinforcement candidate in the Si-based anodes rather than other ceramic materials like TiN, TiB 2 , TiC, and WC, etc. ,, Since, SiC particles are harder than Si (viz., hardness of SiC film is ∼35–45 GPa and Si is ∼12 GPa) and forms a strong interfacial bond with the element (interfacial strength of SiC/Si ∼4.3 ± 1.9 GPa), it is likely that SiC particles will be able to restrain relative “movement” of Si matrix during Li insertion/removal. Additionally, during the course of lithiation/delithiation, the huge stress that usually gets generated in Si can be efficiently transferred to the SiC particles, which will then better preserve the integrity of the Si phase.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Electrochemical Stability Improvement of SiC-Reinforced Silicon-Based Composite Anode for Li-Ion Batteries

Furquan

Jangid

Khatribail

et al. 2020

ACS Appl. Energy Mater.

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Extreme volume changes and concomitant mechanical instabilities (viz., origin and proliferation of cracking) in Si-based anodes are responsible for premature failure in lithium-ion batteries. Thus, it is a crucial hurdle toward the development of high-performance Si-based batteries, especially in the current scenario of electric vehicles. Accordingly, this research demonstrates a significant improvement in the mechanical stainability of Si-based anode material via in situ incorporation of carbide with a specific design, thereby bestowing outstanding stability in the electrochemical performance. At this juncture, we have established a bridge between nanomechanical and electrochemical properties, investigated via nanoindentation and in-operando stress measurements during electrochemical cycling for Si and in situ reinforced Si–SiC composite. Enhancing the hardness (H) of Si–SiC composite to almost twice as well as enhancing the hardness to effective Young’s modulus (E*) ratio (H 3/E*2) of the same to almost thrice than that of Si, helped resist the occurrence of plastic deformation and cracking in significant terms. In-operando study shows the typical stress flattening (cum, anisotropic behavior) in the case of the unreinforced Si electrode, which is a manifestation of plastic flow/cracking. By contrast, monotonous stress profiles and absence of the signature of plastic flow/cracking are observed for the Si–SiC electrode, which is an advantage for long cycle life, as observed here. Overall, this kind of experimental study could establish the nanomechanical to electrochemical tie-up, leading to 82% capacity retention over 650 cycles in a Li-ion full-cell along with the Si–SiC composite anode. The “power cycle” of the Si–SiC composite anode, with a variation of current density from 0.5 to 6.0 A g–1, also reveals excellent stability up to 2500 cycles.

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In-situ measurement of SiC/Si interfacial tensile strength of reaction bonded SiC/Si composite

Cited by 11 publications

References 21 publications

Thermostructural Characterization of Silicon Carbide Nanocomposite Materials via Molecular Dynamics Simulations

Thermostructural Characterization of Silicon Carbide Nanocomposite Materials via Molecular Dynamics Simulations

Effect of Interface Coating on High Temperature Mechanical Properties of SiC–SiC Composite Using Domestic Hi–Nicalon Type SiC Fibers

Mechanical and Electrochemical Stability Improvement of SiC-Reinforced Silicon-Based Composite Anode for Li-Ion Batteries

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