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10.3390/ma12050747
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Article

Characteristics of ZrC Barrier Coating on SiC-Coated Carbon/Carbon Composite Developed by Thermal Spray Process

by
Bo Ram Kang
1,
Ho Seok Kim
1,
Phil Yong Oh
1,
Jung Min Lee
2,
Hyung Ik Lee
2 and
Seong Min Hong
1,*
1
High-enthalpy Plasma Research Center, Chonbuk National University, 546 Bongdong-ro, Bongdong-eup, Wanju-gun, Jeonbuk 55317, Korea
2
Agency for Defense Development, Yuseong PO Box 35, Daejeon 305600, Korea
*
Author to whom correspondence should be addressed.
Materials 2019, 12(5), 747; https://doi.org/10.3390/ma12050747
Submission received: 7 February 2019 / Revised: 28 February 2019 / Accepted: 28 February 2019 / Published: 5 March 2019
(This article belongs to the Special Issue Advances in Thermal Spray Technology)
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Abstract

A thick ZrC layer was successfully coated on top of a SiC buffer layer on carbon/carbon (C/C) composites by vacuum plasma spray (VPS) technology to improve the ablation resistance of the C/C composites. An optimal ZrC coating condition was determined by controlling the discharge current. The ZrC layers were more than 70 µm thick and were rapidly coated under all spraying conditions. The ablation resistance and the oxidation resistance of the coated layer were evaluated in supersonic flames at a temperature exceeding 2000 °C. The mass and linear ablation rate of the ZrC-coated C/C composites increased by 2.7% and 0.4%, respectively. During flame exposure, no recession was observed in the C/C composite. It was demonstrated that the ZrC coating layer can fully protect the C/C composites from oxidation and ablation.
Keywords: carbon/carbon (C/C) composites; ultra-high temperature ceramic (UHTC); vacuum plasma spray (VPS); ablation resistance carbon/carbon (C/C) composites; ultra-high temperature ceramic (UHTC); vacuum plasma spray (VPS); ablation resistance

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MDPI and ACS Style

Kang, B.R.; Kim, H.S.; Oh, P.Y.; Lee, J.M.; Lee, H.I.; Hong, S.M. Characteristics of ZrC Barrier Coating on SiC-Coated Carbon/Carbon Composite Developed by Thermal Spray Process. Materials 2019, 12, 747. https://doi.org/10.3390/ma12050747

AMA Style

Kang BR, Kim HS, Oh PY, Lee JM, Lee HI, Hong SM. Characteristics of ZrC Barrier Coating on SiC-Coated Carbon/Carbon Composite Developed by Thermal Spray Process. Materials. 2019; 12(5):747. https://doi.org/10.3390/ma12050747

Chicago/Turabian Style

Kang, Bo Ram, Ho Seok Kim, Phil Yong Oh, Jung Min Lee, Hyung Ik Lee, and Seong Min Hong. 2019. "Characteristics of ZrC Barrier Coating on SiC-Coated Carbon/Carbon Composite Developed by Thermal Spray Process" Materials 12, no. 5: 747. https://doi.org/10.3390/ma12050747

APA Style

Kang, B. R., Kim, H. S., Oh, P. Y., Lee, J. M., Lee, H. I., & Hong, S. M. (2019). Characteristics of ZrC Barrier Coating on SiC-Coated Carbon/Carbon Composite Developed by Thermal Spray Process. Materials, 12(5), 747. https://doi.org/10.3390/ma12050747

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