Processing and measurement of basic properties of SiC and cordierite coatings of carbon/carbon composite

Wu, Tsung-Min; Won, Kon-Hon; Wei, Wen‐Cheng J.

doi:10.1016/0257-8972(94)02393-x

Cited by 11 publications

(3 citation statements)

References 13 publications

(11 reference statements)

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“…Recently, literature on the surface treatment of 3D C/C for industrial application became available; 8 however, no literature was found concerning the biomedical potential of 3D C/C. In the present research, 3D C/C was studied as a potential bone-repairing biomaterial.…”

Section: Introductionmentioning

confidence: 98%

Collagen/apatite coating on 3-dimensional carbon/carbon composite

Zheng

Liu

et al. 1998

J. Biomed. Mater. Res.

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A three-dimensional carbon/carbon composite (3D C/C) was studied as potential bone-repairing material; its major mechanical properties were found to be closer to those of human bone than other common bone-repairing materials available. In vitro calcification tests revealed that as-received 3D C/C is almost bioinert in simulated body fluid (SBF) over an immersion period of 4 weeks. To improve the bioactivity of 3D C/C, surface modification was accomplished through two practical routes: (1) grafting with polyethylene glycol (PEG) and (2) phosphorylation and precalcification. After grafting with alpha, omega di(aminopropyl) polyethylene glycol 800 (NH2-PEG-NH2), a continuous layer of calcium phosphate was formed on the surface of 3D C/C in SBF after 4 weeks. Phosphorylated 3D C/C samples have the ability to induce apatite precipitation after precalcification in a saturated Ca(OH)2 solution for 1 week. To speed up the coating process, a calcification solution with collagen was developed in which a collagen/apatite coating layer can be formed on 3D C/C in 9 h in ambient conditions.

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Section: Introductionmentioning

confidence: 98%

Collagen/apatite coating on 3-dimensional carbon/carbon composite

Zheng

Liu

et al. 1998

J. Biomed. Mater. Res.

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“…To overcome this problem, a homogeneous carbon layer prepared over the surface of C-C composites before applying the SiC coating was acquired effectively to eliminate the above adverse effects to some extent. [23][24][25][26] The important parameters of the precoated carbon layer, such as preparation method, composition, and additive, have been proved to significantly affect the properties of the ultimate SiC coating. What is more, the thickness of the precoated carbon layer would be also crucial for the SiC coating.…”

Section: Introductionmentioning

confidence: 99%

Effect of precoated carbon layer on microstructure and anti‐erosion properties of SiC coating for 2D‐C/C composites

Shi

Tan

Hao

et al. 2018

Int J Applied Ceramic Tech

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To improve the erosion resistant of carbon‐carbon composites, an SiC coating was synthesized on carbon‐carbon composites by the in situ reaction method. They are firstly coated with carbon layer by slurry, and then SiC coatings are obtained by chemical vapor reaction. The effects of precoated carbon layer on the microstructure and anti‐erosion properties of SiC‐coated C‐C composites were studied and characterized. The thickness of the SiC coating increased with the increase in the precoated carbon layer thickness. The different thickness of carbon layer affects hardness of the SiC coatings, resulting in diverse erosion resistance of the coatings. The SiC coating prepared with moderate thickness of precoated carbon layer exhibits the best erosion resistance, and show better resistance at an impact angle of 30° than 90°. The eroded surface revealed that coating cracking and brittle fracture, fiber‐matrix debonding, fiber breakage, and material removal, and the additional microcutting and microploughing at oblique impact angle are the major erosion mechanism of SiC coating for C/C composites.

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“…Several approaches have been proposed to protect C-C composites from oxidation (Tsou and Kowbel, 1995;Wu et al, 1996;Isola et al, 1998;Cairo et al, 2001). Here, a silicon carbide (SiC) coating is considered.…”

Section: Introductionmentioning

confidence: 99%

A numerical study on interface crack growth under heat flux loading

Hattiangadi

Siegmund

2005

International Journal of Solids and Structures

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A numerical framework for the coupled thermo-mechanical analysis of crack growth in structures loaded by an applied heat flux is outlined. Using a thermo-mechanical cohesive zone model (TM-CZM), load transfer behavior is coupled to heat conduction across an interface and the corresponding interface crack. Nonlinear effects occur due to the coupling between the mechanical and thermal problem introduced by the conductance-separation response between crack faces as well as through the temperature dependence of material constants of the CZM. The description of the load transfer behavior uses a traction-separation law with an internal residual property variable that characterizes the extent of damage caused by mechanical loading. The description of thermal transport includes a representation of the breakdown of interface conductance with increase in material separation. The current state of interface failure, the presence of gas entrapped in the crack, the radiative heat transfer across the crack and a contact conductance between crack faces determine the cohesive zone conductance. The TM-CZM is implemented into a finite element code and applied in the study of interface crack growth between an oxidation protection coating on a thermal protection material.

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Processing and measurement of basic properties of SiC and cordierite coatings of carbon/carbon composite

Cited by 11 publications

References 13 publications

Collagen/apatite coating on 3-dimensional carbon/carbon composite

Collagen/apatite coating on 3-dimensional carbon/carbon composite

Effect of precoated carbon layer on microstructure and anti‐erosion properties of SiC coating for 2D‐C/C composites

A numerical study on interface crack growth under heat flux loading

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