SiC/SiC Composites Prepared with a BN Interphase Processed by LP-CVD from Molecular Precursor

2005 ◽  
pp. 443-450
Author(s):  
Sylvain Jacques ◽  
Marie Paule Berthet ◽  
B. Bonnetot
Keyword(s):  
Molecular Precursor ◽  
Sic Composites

SiC/SiC Composites Prepared with a BN Interphase Processed by LP-CVD from Molecular Precursor

2005 ◽  
Vol 494 ◽  
pp. 443-450
Author(s):  
Sylvain Jacques ◽  
Marie Paule Berthet ◽  
B. Bonnetot
Keyword(s):  
Vapour Deposition ◽  
Interfacial Shear Stress ◽  
Chemical Vapour ◽  
Chemical Damage ◽  
Molecular Precursor ◽  
Pressure Chemical ◽  
Ft Ir ◽  
Sic Composites ◽  
Halogen Free ◽  
Fibre Matrix

A BN interphase has been deposited by infiltration of a Hi-Nicalon fibre tow in a Low Pressure Chemical Vapour Deposition reactor using a boron nitride molecular precursor: the tris(dimethylamino)borane (TDMAB), an halogen-free precursor. This precursor prevents fibre and CVD apparatus from chemical damage. Then SiC/BN/SiC 1D mini-composites were produced by classical CVD of SiC from hydrogen and methyltrichlorosilane mixture. The interphase composition was characterised using FT-IR and XPS analyses and the presence of carbon in the BN has be related to surface pollution and not from carbon bounded to the coating. The tensile properties of the mini-composites were tested with unload-reload cycles and have shown very good mechanical properties corresponding to a high interfacial shear stress. The observations of the interphase using TEM reveal that it is made of an anisotropic turbostratic BN. The fibre/matrix debounding, which occurs during mechanical loading, was shown to be located within the BN interphase.

Structural and mechanical characteristics of ZA27-7 wt.% SiC composites produced by powder metallurgy techniques

2004 ◽  
Vol 95 (8) ◽  
pp. 704-707
Author(s):  
Dušan Božić ◽  
Aleksandar Devečerski ◽  
Biljana Dimčić ◽  
Miroljub Vilotijević ◽  
Višeslava Rajković
Keyword(s):  
Powder Metallurgy ◽  
Mechanical Characteristics ◽  
Sic Composites

OXIDATION BEHAVIOR OF IN SITU SYNTHESIZED MoSi2-SiC COMPOSITES AT 500℃

2013 ◽  
Vol 49 (11) ◽  
pp. 1303 ◽  
Author(s):  
Laiqi ZHANG ◽  
Kunming PAN ◽  
Lihui DUAN ◽  
Junpin LIN
Keyword(s):  
Oxidation Behavior ◽  
Sic Composites

Microstructures, Strength and Toughness of 2D Cf/(C-SiC) Composites by Chemical Vapor Infiltration

2009 ◽  
Vol 24 (5) ◽  
pp. 939-942 ◽  
Author(s):  
Zhi-Xin MENG ◽  
Lai-Fei CHENG ◽  
Li-Tong ZHANG ◽  
Yong-Dong XU ◽  
Xiu-Feng HAN
Keyword(s):  
Chemical Vapor ◽  
Chemical Vapor Infiltration ◽  
Sic Composites ◽  
Strength And Toughness ◽  
Vapor Infiltration

Preparation of Ordered Porous Ceramic Joint on C/SiC Composites and Its Joining Technique

2013 ◽  
Vol 28 (7) ◽  
pp. 763-768 ◽  
Author(s):  
Hao WANG ◽  
Qing-Jun ZHOU ◽  
Ke JIAN ◽  
Chang-Wei SHAO ◽  
Yi-Hua ZHU
Keyword(s):  
Porous Ceramic ◽  
Sic Composites ◽  
Ordered Porous

Improved mechanical and microwave absorption properties of SiCf/SiC composites with SiO2 filler

2021 ◽  
Vol 47 (10) ◽  
pp. 14455-14463 ◽  
Author(s):  
Zhaowen Ren ◽  
Wancheng Zhou ◽  
Yuchang Qing ◽  
Shichang Duan ◽  
Haijun Pan ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Sic Composites
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