Oxidation-resistant carbon-fiber-reinforced ceramic-matrix composites
Oxidation-resistant carbon-fiber-reinforced ceramic-matrix composites
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DOI：
10.1016/s0266-3538(98)00146-8
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发表时间：
1999-01-01
影响因子：
9.1
通讯作者：
Cataldi, M
中科院分区：
文献类型：
--
作者：
Lamouroux, F;Bertrand, S;Cataldi, M
为了提高碳纤维增强陶瓷基复合材料的抗氧化性能和氧环境下的使用寿命，研制了一种多层Si-B-C陶瓷基。这一概念已被应用于多向纤维碳预制体。研究了碳纤维增强多层陶瓷基复合材料的制备工艺、力学性能和抗氧化性能。该基质的效率与基于通常用于减少氧渗透的外部涂层的经典抗氧化体系的效率进行了比较。尽管纤维预制体结构复杂，基体损伤严重，但多层陶瓷基体的氧化保护效果仍然很明显。实验结果表明，在热机械载荷和氧环境下，采用多层基体保护碳增强材料不被氧化，可以显著提高复合材料的使用寿命。1999爱思唯尔科学有限公司版权所有。
A multilayer Si-B-C ceramic matrix has been developed to improve the oxidation resistance and the lifetime in an oxygen environment of carbon-fiber-reinforced ceramic-matrix composites. This concept has been applied to a multidirectional fibrous carbon preform. The paper deals with the processing, the mechanical behaviour and the oxidation resistance of a carbon-fiber-reinforced multilayer ceramic-matrix composite. The efficiency of this matrix is compared to that of the classical anti-oxidation systems based on an external coating usually employed to reduce the oxygen permeation. The efficiency of the oxidation protection of the multilayer ceramic matrix is still evident in spite of the complex architecture of the fibrous preform and the damage of the matrix. The experimental results show that a strong improvement in the lifetime of such composites under thermomechanical loading and in an oxygen environment is obtained when a multilayer matrix is used to protect the carbon reinforcement against oxidation. (C) 1999 Elsevier Science Ltd. All rights reserved.