Fabrication and Properties of Cf/Ti3SiC2-SiC Composites Using Ti3SiC2 as Inert Filler

Because of its combined characteristics of metals and ceramics, such as low density, high Young’s modulus, thermal and chemical resistance with low hardness, high electrical and thermal conductivity, it was expected that the introduction of Ti3SiC2 to fiber reinforced ceramic matrix can make the composite own some unique properties. In the present research, Ti3SiC2 powders used as inert fillers were fabricated by the in-situ reaction between Ti and polycarbosilane mixtures. The purity of Ti3SiC2 powders analyzed by XRD was determined by RIR method, which is a semi-quantitative XRD analysis. The results showed that the purity of Ti3SiC2 powders is about 96%. Cf/Ti3SiC 2-SiC composites are obtained by polymer infiltration and pyrolysis process using Ti3SiC2 powders as the inert fillers. The bending strength of Cf/Ti3SiC2-SiC composites was about 160 MPa.

Download Full-text

Improved Oxidation Resistance of SiС-Based Ceramic Matrix Composites by In Situ Reaction with Si3N4 Filler

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.512-515.775 ◽

2012 ◽

Vol 512-515 ◽

pp. 775-778

Author(s):

Bin Wu ◽

Zhen Wang ◽

Shao Ming Dong

Keyword(s):

Phase Composition ◽

Oxidation Resistance ◽

Bending Strength ◽

Ceramic Matrix Composites ◽

Ceramic Matrix ◽

Matrix Composites ◽

Three Point Bending ◽

Sic Composites ◽

Polymer Infiltration

SiC-Si3N4 powders and modified SiC-based ceramic matrix composites (CMCs) were fabricated using polycarbosilane (PCS), divinylbenzene (DVB) and Si3N4 filler. Si3N4 was introduced into CMCs fabricated through polymer infiltration and pyrolysis (PIP) to lower down the carbon content by in-situ carbothermal reaction, which derived from pyrolyzed PCS-DVB. The oxidation resistance and three point bending strength of modified C/SiC composites were effectively enhanced. The phase composition, microstructure of SiC-Si3N4 powders and modified C/SiC composites were investigated by XRD, SEM and TEM.

Download Full-text

Preparation and Properties of 2D Carbon Cloth Reinforced Ultra-High Temperature Ceramic Matrix Composites

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.368-372.1050 ◽

2008 ◽

Vol 368-372 ◽

pp. 1050-1052 ◽

Cited By ~ 4

Author(s):

Yong Lian Zhou ◽

Hai Feng Hu ◽

Yu Di Zhang ◽

Qi Kun Wang ◽

Chang Rui Zhang

Keyword(s):

High Temperature ◽

Carbon Fiber ◽

Ceramic Matrix Composites ◽

Ceramic Matrix ◽

Carbon Cloth ◽

Matrix Composites ◽

Pyrolysis Process ◽

Sic Composites ◽

Polymer Infiltration ◽

Ultra High Temperature

In this paper the preparation of carbon fiber reinforced ultra-high temperature ceramic matrix composites was reported. Polymer infiltration and pyrolysis process was used to prepare 2D C/TaC-SiC, C/NbC-SiC, and C/ZrC-SiC composites. The fracture strengths of all the samples were around 300MPa and toughness around 10MPa-m1/2. Standard oxyacetylene torch tests (>3000°C, 30s) showed that the minimum ablative rate of 2D C/SiC-ZrC was as low as 0.026 mm/s, much smaller than that of 2D C/SiC composites (0.088mm/s).

Download Full-text

Preparation and characterization of ZrB 2 and TaC containing C f /SiC composites via Polymer-Infiltration-Pyrolysis process

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2016.12.048 ◽

2017 ◽

Vol 37 (5) ◽

pp. 1955-1960 ◽

Cited By ~ 20

Author(s):

Franziska Uhlmann ◽

Christian Wilhelmi ◽

Stephan Schmidt-Wimmer ◽

Steffen Beyer ◽

Claudio Badini ◽

...

Keyword(s):

Pyrolysis Process ◽

Sic Composites ◽

Polymer Infiltration

Download Full-text

Fabrication of TiAl/B4C Composites from an Al-Ti-B4C System Reinforced by TiC, TiB2 In Situ

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.79-82.477 ◽

2009 ◽

Vol 79-82 ◽

pp. 477-480 ◽

Cited By ~ 2

Author(s):

Li Hua Dong ◽

Wei Ke Zhang ◽

Jian Li ◽

Yan Sheng Yin

Keyword(s):

Bending Strength ◽

Ceramic Matrix Composites ◽

Ceramic Matrix ◽

High Energy ◽

Matrix Composites ◽

X Ray Diffraction ◽

X Ray ◽

Hot Pressing Sintering ◽

Different Content

Near full dense B4C ceramic matrix composites were fabricated from Ti-Al-B4C system by combining high energy milling with hot pressing sintering. The effect of different content of Ti-Al on the mechanical properties and microstructure of the as-prepared composites was investigated. A TiAl/B4C composite, whose typical bending strength and fracture toughness are 437.3 MPa and 4.85 MPa•m1/2, respectively, was made. The sintering mechanism and reinforcement mechanism were discussed with the assistant of X-Ray diffraction and electron microscopy.

Download Full-text

Thermal conductivity and bending strength of SiC composites reinforced by pitch-based carbon fibers

Journal of Advanced Ceramics ◽

10.1007/s40145-021-0527-5 ◽

2022 ◽

Vol 11 (2) ◽

pp. 247-262

Author(s):

Liyang Cao ◽

Yongsheng Liu ◽

Yunhai Zhang ◽

Yejie Cao ◽

Jingxin Li ◽

...

Keyword(s):

Thermal Conductivity ◽

Carbon Content ◽

Carbon Fibers ◽

Reaction Temperature ◽

Bending Strength ◽

Ceramic Composites ◽

Future Application ◽

Pull Out ◽

Sic Composites ◽

Thermal Conductivities

AbstractIn this work, pitch-based carbon fibers were utilized to reinforce silicon carbide (SiC) composites via reaction melting infiltration (RMI) method by controlling the reaction temperature and resin carbon content. Thermal conductivities and bending strengths of composites obtained under different preparation conditions were characterized by various analytical methods. Results showed the formation of SiC whiskers (SiCw) during RMI process according to vapor—solid (VS) mechanism. SiCw played an important role in toughening the Cpf/SiC composites due to crack bridging, crack deflection, and SiCw pull-out. Increase in reaction temperature during RMI process led to an initial increase in thermal conductivity along in-plane and thickness directions of composites, followed by a decline. At reaction temperature of 1600 °C, thermal conductivities along the in-plane and thickness directions were estimated to be 203.00 and 39.59 W/(m·K), respectively. Under these conditions, bending strength was recorded as 186.15±3.95 MPa. Increase in resin carbon content before RMI process led to the generation of more SiC matrix. Thermal conductivities along in-plane and thickness directions remained stable with desirable values of 175.79 and 38.86 W/(m·K), respectively. By comparison, optimal bending strength improved to 244.62±3.07 MPa. In sum, these findings look promising for future application of pitch-based carbon fibers for reinforcement of SiC ceramic composites.

Download Full-text

Preparation of C/C-SiC Composite with Hydrogen-Containing Polysiloxane as Ceramic Precursor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.2932 ◽

2011 ◽

Vol 239-242 ◽

pp. 2932-2936

Author(s):

Meng Jiao Gao ◽

Lai Chen ◽

Yong Sheng Hua ◽

Jia Bao Zhang ◽

Jian Feng Pan ◽

...

Keyword(s):

Pyrolysis Temperature ◽

Ablation Rate ◽

Cross Linking ◽

Pyrolysis Process ◽

Ceramic Precursor ◽

Pyrolysis Method ◽

Linear Ablation ◽

Sic Composites ◽

Polymer Infiltration

This study focuses on the conditions of preparation of C/C-SiC composites through polymer infiltration and pyrolysis method using hydrogen-containing polysiloxane as the precursor and divinylbenzene as cross-linking agent. The densities of different C/C composites (ρ=1.02, 1.21, 1.60, 1.78g·cm-3) increased to 1.24, 1.36, 1.69, 1.84g·cm-3respectively after infiltration and pyrolysis four times. The appropriate ratio of hydrogen-containing polysiloxane and divinylbenzene was 1/0.5. The appropriate cross-linking temperature was 250°C. In pyrolysis process, the appropriate increasing rate of pyrolysis temperature should be 50°C/h in the range of 300-800°C. SiC was formed when pyrolysis temperature reached 1550°C.The linear ablation rate and mass ablation rate of C/C-SiC composites were much lower than those of C/C composites.

Download Full-text

KD-S SiCf/SiC composites with BN interface fabricated by polymer infiltration and pyrolysis process

Journal of Advanced Ceramics ◽

10.1007/s40145-018-0268-2 ◽

2018 ◽

Vol 7 (2) ◽

pp. 169-177 ◽

Cited By ~ 10

Author(s):

Honglei Wang ◽

Shitao Gao ◽

Shuming Peng ◽

Xingui Zhou ◽

Haibin Zhang ◽

...

Keyword(s):

Pyrolysis Process ◽

Sic Composites ◽

Polymer Infiltration

Download Full-text

Preparation and properties of 3D needle-punched C/ZrC–SiC composites by polymer infiltration and pyrolysis process

Ceramics International ◽

10.1016/j.ceramint.2014.03.099 ◽

2014 ◽

Vol 40 (7) ◽

pp. 10961-10970 ◽

Cited By ~ 23

Author(s):

Chunlei Yan ◽

Rongjun Liu ◽

Yingbin Cao ◽

Changrui Zhang ◽

Deke Zhang

Keyword(s):

Pyrolysis Process ◽

Sic Composites ◽

Polymer Infiltration

Download Full-text

In Situ Synthesis of TiB2-TiCx Ceramic Matrix Composites by Hot Isostatic Pressing

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.26-28.251 ◽

2007 ◽

Vol 26-28 ◽

pp. 251-254

Author(s):

De Gui Zhu ◽

Hong Liang Sun ◽

Liang Hui Wang

Keyword(s):

Raw Materials ◽

Hot Isostatic Pressing ◽

Ceramic Matrix Composites ◽

Ceramic Matrix ◽

Xrd Analysis ◽

In Situ Synthesis ◽

Matrix Composites ◽

Isostatic Pressing ◽

Fine Grain

TiB2-TiC ceramic matrix composites were fabricated by in situ synthesis under hot isostatic pressing (HIP) with 3TiH2-B4C and 11TiH2-3B4C being the raw materials, respectively. The XRD analysis indicates that the samples synthesized from 3TiH2-B4C have TiB2 and TiC phases, while those from 11TiH2-3B4C have not only TiB2 and TiCx phases, but also Ti3B4 phase. TiB2-TiCx ceramic matrix composites obtained from 11TiH2-3B4C have better mechanical properties than those from 3TiH2-B4C. The microstructures of the composites are investigated with SEM and TEM. TiB2 grains are platelet grains; Ti3B4 grains have two different morphologies. Ti3B4 phases are formed through two different paths: fine grain Ti3B4 is formed through TiB+B=Ti3B4 at low temperature; large plate-like grain Ti3B4 is formed through TiB2+TiB=Ti3B4 at high temperature.

Download Full-text