In-field reparation of the damaged coatings for C/C composites

Kewei Wang; Lei Luo; Yonghong Lu; Juan Yang; Yiguang Wang

doi:10.1016/j.ceramint.2015.02.078

In-field reparation of the damaged coatings for C/C composites

Kewei Wang, Lei Luo, Yonghong Lu, Juan Yang, Yiguang Wang^*

^*Corresponding author for this work

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Protective coatings are critical to the successful application of the carbon/carbon (C/C) composites in the thermal protection systems of space vehicles. The damages of such coatings during installation and operation would threaten the safety of flight. In this contribution, an in-field technology based on a multilayer structure was developed to repair the damaged coatings of C/C composites. The multilayer structure contains a silicon buffer inner layer, a mullite heat-resistant middle layer and a borosilicate glass outer layer. The oxidation tests in air at 1300 °C and 1500 °C indicated that the weight loss of the repaired samples was greatly reduced compared with that of the damaged ones. The plasma wind tunnel tests for both repaired and damaged coatings further demonstrated that the multilayer structure could effectively protect the damaged composites from ablation in oxidation environments.

Original language	English
Pages (from-to)	7549-7555
Number of pages	7
Journal	Ceramics International
Volume	41
Issue number	6
DOIs	https://doi.org/10.1016/j.ceramint.2015.02.078
Publication status	Published - 1 Jul 2015
Externally published	Yes

Keywords

Coating repair
Multi-layer coating
Oxidation test

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10.1016/j.ceramint.2015.02.078

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abstract = "Protective coatings are critical to the successful application of the carbon/carbon (C/C) composites in the thermal protection systems of space vehicles. The damages of such coatings during installation and operation would threaten the safety of flight. In this contribution, an in-field technology based on a multilayer structure was developed to repair the damaged coatings of C/C composites. The multilayer structure contains a silicon buffer inner layer, a mullite heat-resistant middle layer and a borosilicate glass outer layer. The oxidation tests in air at 1300 °C and 1500 °C indicated that the weight loss of the repaired samples was greatly reduced compared with that of the damaged ones. The plasma wind tunnel tests for both repaired and damaged coatings further demonstrated that the multilayer structure could effectively protect the damaged composites from ablation in oxidation environments.",

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T1 - In-field reparation of the damaged coatings for C/C composites

AU - Wang, Kewei

AU - Luo, Lei

AU - Lu, Yonghong

AU - Yang, Juan

AU - Wang, Yiguang

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Protective coatings are critical to the successful application of the carbon/carbon (C/C) composites in the thermal protection systems of space vehicles. The damages of such coatings during installation and operation would threaten the safety of flight. In this contribution, an in-field technology based on a multilayer structure was developed to repair the damaged coatings of C/C composites. The multilayer structure contains a silicon buffer inner layer, a mullite heat-resistant middle layer and a borosilicate glass outer layer. The oxidation tests in air at 1300 °C and 1500 °C indicated that the weight loss of the repaired samples was greatly reduced compared with that of the damaged ones. The plasma wind tunnel tests for both repaired and damaged coatings further demonstrated that the multilayer structure could effectively protect the damaged composites from ablation in oxidation environments.

AB - Protective coatings are critical to the successful application of the carbon/carbon (C/C) composites in the thermal protection systems of space vehicles. The damages of such coatings during installation and operation would threaten the safety of flight. In this contribution, an in-field technology based on a multilayer structure was developed to repair the damaged coatings of C/C composites. The multilayer structure contains a silicon buffer inner layer, a mullite heat-resistant middle layer and a borosilicate glass outer layer. The oxidation tests in air at 1300 °C and 1500 °C indicated that the weight loss of the repaired samples was greatly reduced compared with that of the damaged ones. The plasma wind tunnel tests for both repaired and damaged coatings further demonstrated that the multilayer structure could effectively protect the damaged composites from ablation in oxidation environments.

KW - Coating repair

KW - Multi-layer coating

KW - Oxidation test

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JO - Ceramics International

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In-field reparation of the damaged coatings for C/C composites

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Keywords

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