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

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.

Synthesis and Characterization of NiP-TiC-SiC Nanocomposite Coating via Electroless Process on Alumina Substrate

“…There have not been many studies on EL (Ni-P) deposition on alumina substrate; in the year of (2020), K. D. Sameer et al examined the effect of sensitization and activation settings on the viability of nickel coating on 50 nm alumina particles. A comparison of two activations and sensitizing methods, namely individual and blended activations, had been made when coating particles [14]. While P. Zhang, et al developed an easy and economical activation method on porous alumina ceramic in the year (2021), They start the EL nickel plating reaction by depositing metallic nickel nanoparticles on the alumina ceramic as a catalytic active core.…”