Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item Effect of deposition time on the characteristics of high phosphorous nickel deposit, deposited using electroless route(Trans Tech Publications Ltd ttp@transtec.ch, 2012) Reddy, V.R.; Dixit, B.; Bhat, K.Electroless Ni-high P alloy is deposited on commercial aluminium. Parameters are set so that deposit will be crystalline in nature with a very high phosphorous content. Deposition time is the variable. It is observed that all the deposits have nodular morphology indicating nucleation and growth phenomena. The nodules become coarse with increase in the deposition time. The deposit changes from clear crystalline to nanocrystalline with increase in deposition time. Coatings with lower deposition times have porosity in it. © (2012) Trans Tech Publications.Item Effect of nickel sulphate to hypophosphite ratio on the electroless deposition of Ni-P coatings on aluminium(Trans Tech Publications, 2014) Jayalakshmi, M.; Bhat, K.U.Electroless Ni-P alloy was deposited on commercial pure aluminium with different nickel source-reducing species ratios. Deposition time was fixed as two hours. The deposits were characterised for changes in morphology and crystallinity. It was observed that increase in nickel source to reducing species ratio produced a deposit with reduced mean nodule size. Also, nodule size distribution was narrow. Deposits with increased ratio showed higher levels of crystallinity. © (2014) Trans Tech Publications, Switzerland.