Abstract
In the field of aerospace propulsion system, erosive wear on continuous silicon carbide ( SiC ) fibre-reinforced SiC ( SiC / SiC ) composites is of significant issue to achieve high energy efficiency. This paper proposes a crucial factor and a design guideline of SiC / SiC composites for higher erosion performance regarding cost effectiveness. Fabrication and evaluation of impacts and wear on SiC / SiC composites are successfully carried out. Erosive wear behaviours of the CVI and the LPS composites evidently show that the crucial fabrication factor against solid particle erosion (SPE). Erosive wear mechanisms on various SiC / SiC composites are determined based on the analysis of erosive wear behaviour. Designing guideline for the SiC / SiC composites for pursuit of high erosion performance is also proposed as focusing on the followings; volume fraction of matrix, strength of the matrix, bonding strength, and PyC interface.
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