| タイトル | Repair of oxidation protection coatings on carbon-carbon using preceramic polymers |
| 著者（英） | Schwab, Stuart T.; Graef, Renee C. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1991-01-01
1991 |
| 言語 | eng |
| 内容記述 | The paper describes a field-applicable technique for the repair of damage to SiC protective coatings on carbon/carbon composites, using commercial preceramic polymers, such as perhydropolysilazane developed by the Southwest Research Institute and several commercial polymers (NICALON, PS110, PS116, PS117, NCP-200, and PHPS were tested). After being applied on the damaged panel and oxidized at 1400 C, these polymers form either SiC or Si3N4 (or a mixture of both). It was found that impact damaged carbon/carbon specimens repaired with perhydropolysilazane exhibit substantial oxidation resistance. Many of the other tested preceramic polymer were found to be unsuitable for the purpose of repair due to either low ceramic yield, foaming, or intumescence. |
| NASA分類 | COMPOSITE MATERIALS |
| レポートNO | 93A53948 |
| 権利 | Copyright |
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