Effect of Y2O3 Coating on the Interface and Mechanical Properties of SiC Fiber Reinforced GH4738 Composites

2017 ◽  
Vol 898 ◽  
pp. 604-608 ◽  
Author(s):  
Pei Huan Li ◽  
Yong Zhang ◽  
Xuan Hui Qu
Keyword(s):  
Mechanical Properties ◽  
Hot Isostatic Pressing ◽  
Tensile Tests ◽  
Interfacial Reactions ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Sic Fiber ◽  
Elevated Temperature Tensile ◽  
Barrier Coating ◽  
The Matrix

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.

Deformation at interfaces of Ti-6Al-4V/SiC fiber composites

1992 ◽  
Vol 50 (1) ◽  
pp. 158-159
Author(s):  
Warren J. Moberly ◽  
Daniel B. Miracle ◽  
S. Krishnamurthy
Keyword(s):  
Thermal Stresses ◽  
Load Transfer ◽  
Coefficient Of Thermal Expansion ◽  
Hot Isostatic Pressing ◽  
Matrix Composites ◽  
Ongoing Research ◽  
Aerospace Applications ◽  
Sic Fiber ◽  
The Matrix ◽  
Intermetallic Matrix Composites

Titanium-aluminum alloy metal matrix composites (MMC) and Ti-Al intermetallic matrix composites (IMC), reinforced with continuous SCS6 SiC fibers are leading candidates for high temperature aerospace applications such as the National Aerospace Plane (NASP). The nature of deformation at fiber / matrix interfaces is characterized in this ongoing research. One major concern is the mismatch in coefficient of thermal expansion (CTE) between the Ti-based matrix and the SiC fiber. This can lead to thermal stresses upon cooling down from the temperature incurred during hot isostatic pressing (HIP), which are sufficient to cause yielding in the matrix, and/or lead to fatigue from the thermal cycling that will be incurred during application, A second concern is the load transfer, from fiber to matrix, that is required if/when fiber fracture occurs. In both cases the stresses in the matrix are most severe at the interlace.

Effect of C/SiC interphase on interfacial and mechanical properties of SiC fiber reinforced mullite matrix composites

2021 ◽  
Vol 98 (2) ◽  
pp. 335-341
Author(s):  
Guihang Deng ◽  
Xun Sun ◽  
Zhenghao Tian ◽  
Ru Jiang ◽  
Haitao Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Sic Fiber

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

2003 ◽  
Vol 44 (1) ◽  
pp. 211-218 ◽  
Author(s):  
Tatsuya Hinoki ◽  
Edgar Lara-Curzio ◽  
Lance L. Snead
Keyword(s):  
Mechanical Properties ◽  
High Purity ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Sic Fiber

Micromechanical theory and uniaxial tensile tests of fiber reinforced cement composites

1991 ◽  
Vol 6 (11) ◽  
pp. 2463-2473 ◽  
Author(s):  
C.C. Yang ◽  
T. Mura ◽  
S.P. Shah
Keyword(s):  
Volume Fraction ◽  
Tensile Tests ◽  
Uniaxial Tensile ◽  
Cement Composites ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Theoretical Predictions ◽  
The Matrix ◽  
Reinforced Cement ◽  
Fracture Arrest

The mechanism of fracture arrest in brittle-matrix composites with strong, long fibers is analyzed by using the inclusion method. The maximum stress contribution of the matrix in composites is discussed in this paper. A critical volume fraction of fibers fc is theoretically derived. If the volume fraction f is less than fc, then debonding between fibers and matrix occurs before the crack propagates through the whole section. If f is greater than fc, then no debonding occurs before the crack propagates through the whole section. The value of fc depends on the matrix and fiber properties and the bond character of the interface. To verify the analytical predictions, experiments on fiber reinforced cement composites subjected to uniaxial tension were conducted. The results of the theoretical predictions were also compared satisfactorily with other published experimental data.

311 Fabrication and mechanical properties of SiC fiber reinforced oxide matrix composites

2000 ◽  
Vol 2000.8 (0) ◽  
pp. 109-110
Author(s):  
M. Yoshida ◽  
K. Nagahisa ◽  
K. Kitatani ◽  
G. Sasaki ◽  
H. Fukunaga ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Sic Fiber ◽  
Oxide Matrix

Studies on Mechanical Properties of Kevlar Fiber Reinforced Iron (III) Oxide Nanoparticles Filled Up/Epoxy Nanocomposites

2013 ◽  
Vol 747 ◽  
pp. 409-412
Author(s):  
S. Julyes Jaisingh ◽  
V. Selvam ◽  
M. Suresh Chandra Kumar ◽  
K. Thyagarajan
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix Composites ◽  
High Strength ◽  
Fiber Reinforced Polymer ◽  
Oxide Nanoparticles ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Kevlar Fiber ◽  
Reinforced Polymer ◽  
The Matrix

Fiber reinforced polymer matrix composites have extensively been used in various fields such as aerospace industries, automobiles, marine, and defense industries because of their high strength/weight ratios. In this paper, effect of silane modified iron (III) oxide nanoparticles on the mechanical properties of Kevlar fiber reinforced epoxy composites has been investigated. Composites samples were prepared, each using eight layers of Kevlar fiber reinforced epoxy filled with silane modified iron (III) oxide nanoparticles. The fractured surfaces of fibre reinforced composites were characterized by SEM. Tensile and flexural strength was studied as per the ASTM standards. Based upon the results it is clear that the miscibility of the silane modified iron (III) oxide nanoparticles in the matrix system is of the prime importance with regard to performance.

scholarly journals The Effect of Moisture on the Properties of Glass Fiber Polymer Matrix Composites with MoS2 and CaCO3

2019 ◽  
Vol 8 (6) ◽  
pp. 4800-4806
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Glass Fiber ◽  
Epoxy Matrix ◽  
Polymer Matrix Composites ◽  
Tap Water ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
The Matrix

The mechanical properties and water absorption behavior of a pure glass fiber reinforced epoxy matrix and a glass fiber reinforced epoxy filled composites immersed into a tap water were investigated. The main purpose of this experiment is addition of two different powdered fillers (CaCO3 and MoS2 ) into the epoxy matrix and comparing the properties of pure GFRP and filled GFRP. The composites specimens with fillers absorb less water when compared to pure GFRP specimens at room temperature. Water absorption curves and equilibrium moisture content were determined. The composites exhibit a positive deviation from the Fickan’s law with the addition of fillers into the matrix. The influence of water uptake has significant effect on the reduction of mechanical properties. It is observed that 3% filled MoS2 in epoxy matrix has less uptake of water and the tensile strength decreased is 3% , flexural strength decreased up to 18% and shear strength is 42% decreased when compared to CaCO3 filled composites and unfilled glass fiber reinforced polymer composite.

Cross-section TEM sample preparation of Ti-6Al-4V/SCS6 (SiC) fiber-reinforced composites

1992 ◽  
Vol 50 (1) ◽  
pp. 402-403
Author(s):  
Warren J. Moberly ◽  
Scott Apt
Keyword(s):  
Thermal Processing ◽  
Titanium Aluminide ◽  
Thermal Stresses ◽  
Coefficient Of Thermal Expansion ◽  
Hot Isostatic Pressing ◽  
Matrix Composites ◽  
Sic Fiber ◽  
Structural Applications ◽  
The Matrix ◽  
Intermetallic Matrix Composites

Titanium-based metal matrix composites (MMC) and titanium aluminide intermetallic matrix composites (IMC) have been selected for future aerospace structural applications. The mechanical integrity of these composites are dictated by the thermodynamic stability of the fiber / matrix interface and deformation that occurs at the interface. The thermal processing incurred during hot-isostatic-pressing (HIP) results in the formation of intermetallic phases, with detrimental mechanical properties, at the interface. In addition, the thermal processing results in residual stresses due to the mismatch in coefficient of thermal expansion (CTE) between the Ti-based matrix and the SiC fiber. In some cases the thermal stresses are sufficient to cause yielding in the matrix, and/or lead to fatigue from the thermal cycling that will be incurred during application.

Interfacial reactions and mechanical properties of SiC fiber reinforced Ti3SiC2 and Ti3(SiAl)C2 composites

2021 ◽  
Vol 827 ◽  
pp. 142069
Author(s):  
Guangqi He ◽  
Jingjun Xu ◽  
Zerong Zhang ◽  
Yuhai Qian ◽  
Jun Zuo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Interfacial Reactions ◽  
Fiber Reinforced ◽  
Sic Fiber
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