Abstract :
With the increasing requirement for air transport, there is a demand for more efficient, safe aircraft. This
project concentrates upon improving the thermal stability of ceramic coatings which is one of the most common
coating material used in the aircraft nozzle. Since ceramics have low toughness at high temperature, other materials
are added to the ceramic to enhance its toughness. One of the best materials is SiC, Graphene, and CNT because of
their high temperature stability and high melting point. A mixture of SiC powder with commercially available single
walled CNT is synthesized. A coating of reduced Graphene oxide is made in AISI 321, on which the mixture of
silicon carbide and SWCNT is coated. Then the coated samples have been subjected to Laser ablation test and flame
test. The laser ablated, and flame tested samples have been subject to SEM, EDX analysis for finding out the crack
development. From the SEM images, it is evident that the coating formed has a matrix of Graphene and Silicon
Carbide and F-SWCNT sandwiched together layer by layer and there were no significant cracks have been
developed.
Keyword :
SiC, Graphene, CNT, SEM, EDX, Laser ablation.