6 - Manufacture of graded ceramic matrix composites by infiltration technique

Abstract

This chapter discusses the manufacture of graded ceramic matrix composites using infiltration techniques. The scope of this chapter is broaden by focusing on the synthesis of graded alumina/aluminum titanate (A/AT) and alumina/calcium hexaluminate (A/CA6) systems. Graded composition profiles of A/AT composites were monitored by using X-ray diffraction and grazing incident synchrotron radiation diffraction, whereas graded composition and development profiles of A/CA6 composites were conducted using in situ high-temperature neutron diffraction and synchrotron radiation diffraction. The influences of AT or CA6 addition on the mechanical properties for both graded composites are also examined.