Preparation and Properties of SiC/Si-B-C-N Ceramic Composites

Ming Wei Chen; Hai Peng Qiu; Wei Jie Xie

doi:10.4028/www.scientific.net/KEM.697.489

Paper Titles

Study on the Cause and Control of Defects on Process of CVD SiC
p.472

Fabrication of Mullite Coating and its Oxidation Protection for Carbon Fiber Reinforced SiC Composites
p.476

Wetting and Interfacial Behavior of Molten Al on Mo-Ni(Co)-Si Coated SiC Ceramic
p.481

Effect of Additives on Bond Property for Phenolic Resin-Based Adhesive
p.485

Preparation and Properties of SiC/Si-B-C-N Ceramic Composites
p.489

Preparation of B₄C-ZrB₂ Laminated Composites by Non-Aqueous Tape Casting and Hot-Press Sintering
p.494

Structural-Functional Integrative Mullite_f/SiBN Composites with Excellent Wave-Transparent and Mechanical Properties
p.498

Effects of Viscosity and Pressure on Microstructure and Properties of C_f/SiC-ZrB₂ Composites by PIP Process
p.506

Microstructure and Mechanical Properties of ZrB₂/h-BN Multiphase Ceramics by Low-Temperature Reactive Sintering
p.510

HomeKey Engineering MaterialsKey Engineering Materials Vol. 697Preparation and Properties of SiC/Si-B-C-N Ceramic...

Preparation and Properties of SiC/Si-B-C-N Ceramic Composites

Abstract:

Abstract：SiC/Si-B-C-N and SiC/SiC ceramic matrix composites were prepared through a combination of chemical vapor infiltration (CVI) and polymer impregnation pyrolysis process(PIP). The microscopic morphology and solid phase structure of the SiC/Si-B-C-N and SiC/SiC composites were investigated by SEM and XRD respectively. Moreover,the flexural strength and fracture toughness were measured using three point bending and single-edge notched beam test. Results showed that the formation of crystalline phases transformation was restrained by introduce BN into matrix phase, which might improve the stability of ceramic matrix composites. Furthermore, the flexural strength and fracture toughness of ceramic matrix composites increased to a maximum of 367 MPa and 26.81 MPa·m^1/2 with the 30% PBN weight ratios which might be mainly caused by crack arresting, crack deflecting, micro cracks and fiber pullout.

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Periodical:

Key Engineering Materials (Volume 697)

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489-493

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https://doi.org/10.4028/www.scientific.net/KEM.697.489

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Online since:

July 2016

Authors:

Ming Wei Chen*, Hai Peng Qiu, Wei Jie Xie

Keywords:

Crystalline Phases Transformation, Energy Absorption Mechanisms, SiC/Si-B-C-N Ceramic Matrix Composites

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