- Relationship among in-flight particle characteristics, microstructure and properties of thermal spray coatings.

- Nanostructured thermal spray coatings.

- Thermal barrier coatings (TBCs) for gas turbine engines.

- Environmental barrier coatings (EBCs) on light-weight Si-based ceramics for the next generation of gas turbine engines and hypersonic aircrafts.

- Coatings for landing gears of aircrafts.

- Anti-wear coatings.

- Thin films and physical vapour deposition (PVD) coatings.

Research interests in the general applications of thermal spray coatings and surface engineering.