Mechanical Properties of High Purity SiC Fiber-Reinforced CVI-SiC Matrix Composites

To prevent the strong interfacial reactions in SiC fiber reinforced nickel-based superalloys matrix composites, yttrium oxide (Y2O3) was used as the barrier coating by reaction magnetron sputtering method. Compared with the composites without coating, after the high temperature hot isostatic pressing (HIP), Y2O3 coating effectively protected the SiC fibers from the interfacial reactions, and no element diffusion can be observed between the fibers and the matrix. The elevated temperature tensile tests were performed on both SiC/GH4738 and SiC/Y2O3/GH4738 composite. The results indicated that the strength of the composites with Y2O3 coating can increase about 35% in comparison with the composites without coating.

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Effects of the fiber surface characteristics on the interfacial microstructure and mechanical properties of the KD SiC fiber reinforced SiC matrix composites

Materials Science and Engineering A ◽

10.1016/j.msea.2009.07.018 ◽

2009 ◽

Vol 525 (1-2) ◽

pp. 121-127 ◽

Cited By ~ 65

Author(s):

Haitao Liu ◽

Haifeng Cheng ◽

Jun Wang ◽

Gengping Tang ◽

Renchao Che ◽

...

Keyword(s):

Mechanical Properties ◽

Fiber Surface ◽

Surface Characteristics ◽

Interfacial Microstructure ◽

Matrix Composites ◽

Fiber Reinforced ◽

Sic Fiber ◽

Microstructure And Mechanical Properties

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Fatigue Damage Evolution and Degradation of Mechanical Properties in Silicon-Carbide (SiC) Fiber-Reinforced Titanium Matrix Composites

Life Prediction Methodology for Titanium Matrix Composites ◽

10.1520/stp18232s ◽

2009 ◽

pp. 377-377-18 ◽

Cited By ~ 2

Author(s):

SM Jeng ◽

PC Wang ◽

J-M Yang

Keyword(s):

Mechanical Properties ◽

Silicon Carbide ◽

Fatigue Damage ◽

Damage Evolution ◽

Matrix Composites ◽

Fiber Reinforced ◽

Titanium Matrix ◽

Titanium Matrix Composites ◽

Sic Fiber ◽

Degradation Of Mechanical Properties

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Preparation and Characterization of SiC/SiC Micro Ceramic Matrix Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1058.170 ◽

2014 ◽

Vol 1058 ◽

pp. 170-175 ◽

Cited By ~ 2

Author(s):

Ming Wei Chen ◽

Hai Peng Qiu ◽

Jian Jiao ◽

Xiu Qian Li ◽

Yu Wang ◽

...

Keyword(s):

Mechanical Properties ◽

Ceramic Matrix Composites ◽

Ceramic Matrix ◽

Matrix Composites ◽

Fiber Reinforced ◽

Forming Mechanism ◽

Sic Fiber ◽

Sic Ceramic ◽

Polymer Impregnation

SiC continuous fiber reinforced SiC ceramic matrix composites (SiCf/SiC CMCs) and SiC fiber reinforced SiC micro ceramic matrix composites (SiCf/SiC micro-CMCs) were prepared through polymer impregnation pyrolysis (PIP) progress, then the structures, mechanical properties and forming mechanisms of SiCf/SiC CMCs were investigated. Results showed that volume shrinkage of SiC matrix occurred, and pyrolysates with bamboo-like layered structure were attached to the surface of SiC multifilament gradually. Furthermore, the mechanical properties of SiCf/SiC micro-CMCs were consistent with SiCf/SiC CMCs, so the PIP process parameters for the preparation of SiCf/SiC CMC might be optimized primarily through SiCf/SiC micro-CMCs, which could enhance the design and preparation efficiency of SiCf/SiC CMCs obviously.Key word: polymer impregnation pyrolysis progress, micro ceramic matrix composites, forming mechanism

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