Abstract
Titanium coating was deposited on carbon fibre reinforced silicon carbide matrix (C/SiC) composite by an inexpensive molten salt reaction method. The microstructure and composition of the coating were investigated through optical microscopy, scanning electron microscopy and energy dispersive spectroscopy. The effect of titanium coating as a transition layer in protective systems on the oxidation of C/SiC composite was studied. The results show that titanium coating can reduce the open porosity of C/SiC composite, and prevent carbon diffusion through the coating. The outer MgO-Al2O3–SiO2 (MAS) glass ceramics layer is dense and crack free owing to the titanium coating. Titanium coating alone or MAS glass–ceramics coating do not protect the composite from oxidation effectively. The weight loss of the composite coated with Ti/MAS multilayers was 0˙0039 g cm–2 after 12 h of thermal cycling in air.
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