Dr. Soumya Gangopadhyay
  • Indo-Portugal Joint Project Funded by DST, Government of India
  • Title : Development of advanced PVD coatings for machining nickel-based superalloys
  • Duration : 2018-2021
  • Summary:
  • Nickel-based superalloys have found widespread applications particularly in aerospace, nuclear, petrochemical and marine industries. However, owing to low thermal conductivity, high chemical affinity and presence of abrasive particles in the microstructure, most of the conventional cutting tool materials suffer from rapid tool wear making the functional requirements of cutting tool more stringent. Although coated tools primarily based on TiAlN coatings exhibited some improvement in tool life, the machining industries are still looking for better alternative in order to overcome the problems associated with machining of superalloys and consequently to augment tool life as well as productivity. The proposed study aims at developing multicomponent/multilayer coating(s) deposited using advanced magnetron sputtering technique in an industrial scale deposition system. The proposed study aims at developing (Ti,Al,Cr,Si)N-based bilayers and multilayer coatings expected to possess high hot hardness, thermal stability, chemical inertness and good tribological properties. These properties are essential requirements of cutting tool for machining Ni-based super alloys. The proposed work would first investigate various physical and mechanical properties of the developed coatings in order to recommend a suitable coating for machining Ni-based superalloys under dry and near dry environment.

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