Hardness and wear behaviour of electroless Ni–B coatings

Balaraju, JN and Priyadarshi, A and Kumar, V and Manikandanath, NT and Kumar, PP and Ravisankar, B (2016) Hardness and wear behaviour of electroless Ni–B coatings. Materials Science and Technology (United Kingdom), 32 (16). pp. 1654-1665. ISSN 02670836

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Official URL: https://www.tandfonline.com/doi/full/10.1080/02670...


Depth-dependent hardness variation of dimethylamine borane-reduced electroless Ni–5 wt-%B deposits has been examined using the nanoindentation technique. The deposits were characterised using ICP-OES, FESEM, XRD and DSC for evaluating the composition, morphology, structure and phase transformation behaviour, respectively. Coatings were also analysed for hardness and wear resistance. The surface of the as-plated deposit exhibits a typical nodular morphology. DSC traces show the presence of a single exothermic peak at 313°C conforming to its phase transformation. X-ray diffraction pattern of as-prepared deposit contains a mixture of amorphous and sharp microcrystalline nickel peaks. Heat-treated coating exhibits improved hardness and wear resistance. Depth-dependent nanohardness profile of as-deposited film neither obeys Nix–Gao nor the Lam–Chong model of indentation.

Item Type: Article
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Mrs SK Pratibha
Date Deposited: 08 Feb 2019 09:30
Last Modified: 08 Feb 2019 09:30
URI: http://nal-ir.nal.res.in/id/eprint/13082

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