Fabrication of improved flexural strength C/SiC composites via LA-CVI method using optimized spacing of mass transfer channels

Wang, Jing; Cao, Liyang; Liu, Yongsheng; Zhang, Yunhai; Fang, Hui; Chen, Jie

doi:10.1016/j.jeurceramsoc.2020.02.050

Cited by 26 publications

(6 citation statements)

References 29 publications

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“…It should be mentioned that Image J is an image processing software which has been widely used in scientific image processing. In this work, in order to prevent the destruction of thin buckypapers by the mercury intrusion method, the Image J software was used to determine the average pore diameters and areas [ 38 , 39 , 40 ].…”

Section: Methodsmentioning

confidence: 99%

Multi-Functional Properties of MWCNT/PVA Buckypapers Fabricated by Vacuum Filtration Combined with Hot Press: Thermal, Electrical and Electromagnetic Shielding

et al. 2020

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The applications of pure multi-walled carbon nanotubes (MWCNTs) buckypapers are still limited due to their unavoidable micro/nano-sized pores structures. In this work, polyvinyl alcohol (PVA) was added to a uniform MWCNTs suspension to form MWCNT/PVA buckypapers by vacuum infiltration combined with a hot press method. The results showed an improvement in the thermal, electrical, and electromagnetic interference (EMI) shielding properties due to the formation of dense MWCNTs networks. The thermal and electrical properties rose from 1.394 W/m·k to 2.473 W/m·k and 463.5 S/m to 714.3 S/m, respectively. The EMI performance reached 27.08 dB. On the other hand, ABAQUS finite element software was used to simulate the coupled temperature-displacement performance. The electronic component module with buckypapers revealed a homogeneous temperature and thermal stress distribution. In sum, the proposed method looks promising for the easy preparation of multi-functional nanocomposites at low-cost.

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Section: Methodsmentioning

confidence: 99%

Multi-Functional Properties of MWCNT/PVA Buckypapers Fabricated by Vacuum Filtration Combined with Hot Press: Thermal, Electrical and Electromagnetic Shielding

et al. 2020

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“…Gaseous precursors can be manufactured by the pulsed Pressure Chemical Vapor Infiltration (PCVI) process. C/SiC manufactured by PCVI under the range of 2-5 kPa displays the ability of the process to manufacture multi-layered interphases with the highest pore filling ability, making it a promising method to manufacture highly tailored ceramics [94]. Because of the low infiltration temperatures, this sort of vapor-based chemical infiltration approach may be utilised to create matrices with excellent purity and little fibre damage.…”

Section: Chemical Vapor Infiltrationmentioning

confidence: 99%

A Review on Si-Based Ceramic Matrix Composites and their Infiltration Based Techniques

Radhika

Sathish

2022

Silicon

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This review paper aims to look at silicon-based ceramic matrix composites and infiltration-based approaches for them. There are many different types of infiltration-based manufacturing processes, each with its own set of features. The best technique is chosen depending on the needs and desired attributes. With these considerations in mind, any type of infiltration might be selected to meet the requirements. Silicon-based ceramics has been highly used in the fields of aerospace, medical, automobile, electronics, and other various industries so it is important to study about their applications as well. This review outlines the evolution of composites from early 7000 BCE to composites today and discussed about various infiltration techniques for manufacturing silicon based ceramic matrix composites. This article also gives the comprehensive review of general characteristics and mechanical properties of silicon-based composites used in a variety of engineering sectors. The application section entails the wide range of engineering fields with consideration of infiltration techniques, which would be helpful for researchers to study and correlate the different infiltration techniques for end applications.

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“…where σ(t) is the pressure at the entrance of the channel (related to the time accumulation t) and J c represents the destructive threshold of the material. Table 2 shows the parameters used in our previous studies [26][27][28]30]. Based on the above research analyses, 8000 mW laser power was employed as an optimal value to produce different arrangements of mass transfer channels.…”

Section: Effect Of Femtosecond Laser Power On Quality Of Mass Transmentioning

confidence: 99%

Effect of mass transfer channels on flexural strength of C/SiC composites fabricated by femtosecond laser assisted CVI method with optimized laser power

et al. 2021

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In this study, femtosecond laser assisted-chemical vapor infiltration (LA-CVI) was employed to produce C/SiC composites with 1, 3, and 5 rows of mass transfer channels. The effect of laser machining power on the quality of produced holes was investigated. The results showed that the increase in power yielded complete hole structures. The as-obtained C/SiC composites with different mass transfer channels displayed higher densification degrees with flexural strengths reaching 546 ± 15 MPa for row mass transfer channel of 3. The strengthening mechanism of the composites was linked to the increase in densification and formation of “dense band” during LA-CVI process. Multiphysics finite element simulations of the dense band and density gradient of LA-CVI C/SiC composites revealed C/SiC composites with improved densification and lower porosity due to the formation of “dense band” during LA-CVI process. In sum, LA-CVI method is promising for future preparation of ceramic matrix composites with high densities.

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Fabrication of improved flexural strength C/SiC composites via LA-CVI method using optimized spacing of mass transfer channels

Cited by 26 publications

References 29 publications

Multi-Functional Properties of MWCNT/PVA Buckypapers Fabricated by Vacuum Filtration Combined with Hot Press: Thermal, Electrical and Electromagnetic Shielding

Multi-Functional Properties of MWCNT/PVA Buckypapers Fabricated by Vacuum Filtration Combined with Hot Press: Thermal, Electrical and Electromagnetic Shielding

A Review on Si-Based Ceramic Matrix Composites and their Infiltration Based Techniques

Effect of mass transfer channels on flexural strength of C/SiC composites fabricated by femtosecond laser assisted CVI method with optimized laser power

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