Preparation and characterization of electroless Ni coated nano alumina powder under different sensitization - activation conditions

  • Sameer Kumar Devarakonda Bapatla Engineering College
  • Naga Sai Suman K Department of Mechanical Engineering, Andhra University College of Engineering, Visakhapatnam, India
  • Kalyana Krishna Y Department of Mechanical Engineering, QIS College of Engineering & Technology, Ongole, India
Keywords: electroless plating, Ni coating, sensitization, activation, Al2O3 powder, ceramics, surface preparation

Abstract

The development of electroless coatings on various substrates has gained much interest among researchers for the sake of improved properties. However, the coating on ceramic particles as a source of reinforcement is still a challenge for the researchers and requires a good comprehension of fundamentals since the coating thickness relies upon many parameters. Particularly the sensitization and activation conditions are more important for the creation of an ideal environment to draw metallic ions as a coating layer. Therefore, this paper examines the role of sensitization and activation conditions on the viability of nickel coating on the alumina particles of an average size of 50 nm. A comparison is made between two environments, namely individual and blended activations in the preparation of coated particles. Characterization studies are also presented to support the discussion. 

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Published
2020-07-28
Section
Nanomaterials: Synthesis, Characterization and Applications