Online-Joining of C/SiC-C/SiC via Precursor Infiltration and Pyrolysis Process

Lu, Yang; Zhang, Yu Di; Hu, Hai Feng; Zhang, Chang Rui

doi:10.4028/www.scientific.net/kem.368-372.1044

Cited by 12 publications

(3 citation statements)

References 2 publications

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“…With all the combinations involved, the joining process of CyC -SiC is very complicated. Several joining techniques, such as brazing [1,2], diffusion welding [3,4], self-propagating high-temperature synthesis [5], reaction joining process [6,7], etc. have been used to join carbon fibre reinforced carbon matrix composite (CyC), ceramics and ceramic matrix composites.…”

Section: Introductionmentioning

confidence: 99%

Joining of C/C–SiC using boron-modified phenolic resin with SiO₂and B₄C additives

Chen

Chen³

2011

Materials at High Temperatures

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Joining of carbon fibre reinforced C -SiC dual matrix composite has been realized through a reaction joining process using boron-modified phenolic resin with B 4 C and SiO 2 additives. The effect of the technological parameters on the strength of joints was investigated. The optimized technological parameters are the curing temperature of 200 C, the curing time of 2 hours and the curing pressure of 30 kPa, under which conditions, the obtained strength of the joint is equal to 82.6% of that of the substrate. The interlayer composed of Si, C, B and O is basically uniform and dense. There are no obvious cracks nor pores at the interfaces. The elements migrate across the interfaces, contributing to the enhancement of the joint strength. The results of heat treatment at 1500 C show good heat resistance of the joints. The B 4 C and SiO 2 additives contribute to the densification of the interlayer and the adhesion at the interfaces.

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Section: Introductionmentioning

confidence: 99%

Joining of C/C–SiC using boron-modified phenolic resin with SiO₂and B₄C additives

Chen

Chen³

2011

Materials at High Temperatures

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“…Many joining technologies for C/SiC to metallic systems or C/SiC to C/SiC have been developed, such as brazing [6,7], diffusion welding [8,9], reaction joining process [10,11], PIP/CVI online joining [12,13] and RMI joining process [14,15], yet few papers are published concerning the mechanical joining by introduction of pins or bolts, especially their stripping properties. The mechanical joining with C/SiC pins or bolts for C/SiC composites has some unique advantages such as simplicity, cost-effectiveness, high joining strength and high reliability at moderately high temperature due to similar coefficient of thermal expansion (CET) between the substrates and fasteners.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Mechanical Properties of C/SiC Joints with Pins or Bolts

Zhang

et al. 2012

KEM

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C/SiC substrates and M3 bolts were prepared by precursor infiltration and pyrolysis (PIP) process firstly, then the joints with four joining methods (2 φ3mm soft pins, S-A; 2 M3 bolts, S-B; 2 φ3mm soft pins plus 8 φ1mm soft pins, S-C; 2 M3 bolts plus 8 φ1mm soft pins, S-D) were assembled, finally several PIP cycles were continued to finish densification. The influences of different joining methods and PIP cycles (3 or 6) on the stripping properties of C/SiC joints were investigated, and the fracture modes were analyzed. The stripping loads of the joints adopting 6 PIP cycles are almost two to six times the values adopting 3 PIP cycles, and the corresponding fracture modes are pins or bolts rupture and pull-out, respectively. When adopting 3 PIP cycles, the bearing ability of the joints with bolts (S-B and S-D) is about 51% higher than that of joints with pins (S-A and S-C), but when adopting 6 PIP cycles, the values with pins (S-A and S-C) is about 67% higher than that with bolts (S-B and S-D). Besides, the introduction of φ1mm pins enhances the bearing ability of the joints with 3 and 6 PIP cycles about 45% and 14%, respectively.

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“…Efficient joining of C/SiC and C/SiC first requires stable and high strength compositions at high temperature, such as pure SiC or other high temperature ceramics, and accordingly suitable process to prepare joining. Studies showed that the flexural strengths of pure SiC joining components by PCS infiltration and pyrolysis process could remain stable up to 1200°C, but decreased to 60% at 1500°C [15]. Meanwhile, C/SiC components joined only by PIP process showed physical bond not chemical bond, leading to weak joining strength.…”

Section: Introductionmentioning

confidence: 99%

Online-Joining of C/SiC-C/SiC via Slurry Reaction and Precursor Infiltration and Pyrolysis Process with C/SiC Pins

Zhang

et al. 2012

KEM

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C/SiC composites have widely application prospects in the field of aeronautic and aerospace for their excellent properties. The joining of C/SiC composites is a key to fabricate large and complex components. In this paper, 1D C/SiC pins were prepared by precursor infiltration and pyrolysis (PIP) process and used to join C/SiC composites by Slurry react (SR) and PIP process. The shear strength of the C/SiC pins with different carbon fiber volumes was investigated with the maximum shear strength as high as 339.46MPa. Influences of C/SiC pins on the joining properties of C/SiC composites were studied. The shear strength and flexural strength of C/SiC-C/SiC joining are improved from 9.17MPa and 30.41MPa without pins to 20.06MPa and 75.03MPa with one C/SiC pin (diameter 2mm), respectively. The reliability of C/SiC-C/SiC joining is also improved with C/SiC pins in that the fracture mode changes from catastrophic without pins to non-catastrophic. The SEM photos show a strong bond between joining layer and C/SiC composites without obvious interface.

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Online-Joining of C/SiC-C/SiC via Precursor Infiltration and Pyrolysis Process

Cited by 12 publications

References 2 publications

Joining of C/C–SiC using boron-modified phenolic resin with SiO₂and B₄C additives

Joining of C/C–SiC using boron-modified phenolic resin with SiO₂and B₄C additives

Preparation and Mechanical Properties of C/SiC Joints with Pins or Bolts

Online-Joining of C/SiC-C/SiC via Slurry Reaction and Precursor Infiltration and Pyrolysis Process with C/SiC Pins

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Online-Joining of C/SiC-C/SiC via Precursor Infiltration and Pyrolysis Process

Cited by 12 publications

References 2 publications

Joining of C/C–SiC using boron-modified phenolic resin with SiO2and B4C additives

Joining of C/C–SiC using boron-modified phenolic resin with SiO2and B4C additives

Preparation and Mechanical Properties of C/SiC Joints with Pins or Bolts

Online-Joining of C/SiC-C/SiC via Slurry Reaction and Precursor Infiltration and Pyrolysis Process with C/SiC Pins

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Resources

About

Joining of C/C–SiC using boron-modified phenolic resin with SiO₂and B₄C additives

Joining of C/C–SiC using boron-modified phenolic resin with SiO₂and B₄C additives