Fabrication of SiC fiber reinforced SiC composite by chemical vapor infiltration for excellent mechanical properties

2005 ◽  
Vol 66 (2-4) ◽  
pp. 551-554 ◽  
Author(s):  
N. Igawa ◽  
T. Taguchi ◽  
T. Nozawa ◽  
L.L. Snead ◽  
T. Hinoki ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chemical Vapor ◽  
Chemical Vapor Infiltration ◽  
Fiber Reinforced ◽  
Sic Fiber ◽  
Vapor Infiltration

Fiber-Reinforced Tubular Composites by Chemical Vapor Infiltration°

1991 ◽  
Vol 250 ◽  
Author(s):  
D. P. Stinton ◽  
R. A. Lowden ◽  
T. M. Besmann
Keyword(s):  
Mechanical Properties ◽  
Thermal Gradient ◽  
Chemical Vapor ◽  
Chemical Vapor Infiltration ◽  
Forced Flow ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Infiltration Process ◽  
Filament Wound ◽  
Vapor Infiltration

AbstractA forced-flow thermal-gradient chemical vapor infiltration process has been developed to fabricate composites of thick-walled tubular geometry common to many components. Fibrous preforms of different fiber architectures (3-dimensionally braided and filament wound) have been investigated to accommodate components with different mechanical property requirements. This paper will discuss the fabrication of tubular, fiber-reinforced SiC matrix composites and their mechanical properties.

Characterization of interfaces in CVD-coated nicalon fiber-reinforced SiC

1989 ◽  
Vol 47 ◽  
pp. 556-557
Author(s):  
K.L. More ◽  
R.A. Lowden
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Chemical Vapor ◽  
Chemical Vapor Infiltration ◽  
Frictional Stress ◽  
Fiber Reinforced ◽  
Pull Out ◽  
Carbon Coated ◽  
Fiber Matrix

The mechanical properties of fiber-reinforced composites are directly related to the nature of the fiber-matrix bond. Fracture toughness is improved when debonding, crack deflection, and fiber pull-out occur which in turn depend on a weak interfacial bond. The interfacial characteristics of fiber-reinforced ceramics can be altered by applying thin coatings to the fibers prior to composite fabrication. In a previous study, Lowden and co-workers coated Nicalon fibers (Nippon Carbon Company) with silicon and carbon prior to chemical vapor infiltration with SiC and determined the influence of interfacial frictional stress on fracture phenomena. They found that the silicon-coated Nicalon fiber-reinforced SiC had low flexure strengths and brittle fracture whereas the composites containing carbon coated fibers exhibited improved strength and fracture toughness. In this study, coatings of boron or BN were applied to Nicalon fibers via chemical vapor deposition (CVD) and the fibers were subsequently incorporated in a SiC matrix. The fiber-matrix interfaces were characterized using transmission and scanning electron microscopy (TEM and SEM). Mechanical properties were determined and compared to those obtained for uncoated Nicalon fiber-reinforced SiC.

Growth of SiC nanowires within stacked SiC fiber fabrics by a noncatalytic chemical vapor infiltration technique

2007 ◽  
Vol 300 (2) ◽  
pp. 503-508 ◽  
Author(s):  
Weon-Ju Kim ◽  
Seok Min Kang ◽  
Choong Hwan Jung ◽  
Ji Yeon Park ◽  
Woo-Seog Ryu
Keyword(s):  
Chemical Vapor ◽  
Chemical Vapor Infiltration ◽  
Sic Nanowires ◽  
Sic Fiber ◽  
Infiltration Technique ◽  
Vapor Infiltration

Effects of chemical vapor infiltration atmosphere on the mechanical properties and microstructure of carbon fibers

2001 ◽  
Vol 21 (6) ◽  
pp. 809-816 ◽  
Author(s):  
Yongdong Xu ◽  
Laifei Cheng ◽  
Litong Zhang ◽  
Hongfeng Yin ◽  
Xiaowei Yin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibers ◽  
Chemical Vapor ◽  
Chemical Vapor Infiltration ◽  
Vapor Infiltration
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