A Multi-Scale Approach of Degradation Mechanisms inside a SiC(f)/Si-B-C(m) Based Self-Healing Matrix Composite in a Dry Oxidizing Environment

作者：Nualas Florence^*; Rebillat Francis

来源：Oxidation of Metals, 2013, 80(3-4): 279-287.

DOI：10.1007/s11085-013-9385-z

• Oxidation
• Composite
• Nicalon
• Boron oxide

Ceramic matrix composites are potential candidates to replace the nickel-based alloys in advanced aeronautic engines. The durability of a SiC(f)/PyC(i)/Si-B-C(m) with a sequenced self-healing matrix and Nicalon fibers was investigated at low temperature. To better understand the degradation mechanisms inside this composite, a multi-scale approach was chosen. Firstly, the oxidation behavior of Nicalon fibers and the B4C phase was studied under dry air at 550 A degrees C. The composite structure was then aged in similar oxidizing conditions. Correlation between the different systems led to an accurate description of the degradation mechanisms inside a composite material and to an evaluation of the efficiency of the self-healing process.

• 出版日期2013-10
• 单位中国地震局