Surface Modification of Steel by Nickel Coating in Electrochemical Process

Abstract

Due to the rebar corrosion problems, quite the value of construction is being spent towards repair and renovation of the concrete structures. If rebar corrosion problem continues, lifeline structures are subjected to sudden collapse. So as to avoid the catastrophic failures, effective additional protective measures must be undertaken within the construction stage itself. The target of this investigation is to switch the surface of the low-carbon steel rebar by electroplating in three different coating thicknesses. The efficiency of corrosion resistance properties are evaluated by various electrochemical corrosion tests. This study starts from Brenner and Riddel who developed their work by electroless deposition of nickel. the aim of this study was to calculate the corrosion rate by gravimetric weight loss method supported the electrochemical corrosion test. Also to reinforce the performance of corrosion resistance with three different coating thicknesses like 10µ, 20µ, and 30µ supported the time consumption in low-carbon steel rebar with and without 3.5% Nacl. Potential time studies confirmed the steadiness of coating even within the presence of aggressive chloride medium during one month exposure. 12V accelerated impressed voltage test results indicate that the time taken for initial crack was doubled for 20µ coated steel.

Non-destructive evaluation of subsurface corrosion on hot steel angle sections embedded in concrete and its repair by cement slurry and nitozinc coating

“…This test is particularly useful in cases where manual repair is considered, provided there is no calcium chloride present in the concrete [15,16]. Cathodic Protection is a crucial technique used to halt the rusting process of steel reinforcement within the concrete [17]. This method is instrumental in preventing further corrosion damage, and preserving the structural integrity of the concrete [18].…”

Performance of Propargyl Alcohol as Corrosion Inhibitor for Electroless Nickel-Phosphorus (NiP) Coating in Hydrochloric Acid Solution

“…The co-deposition of NiP has the behaviour of a crystalline or amorphous alloy, which depends on the mass ratio of Ni and P. For severe operating conditions, the P content must not be less than 10% by mass [1][2][3][4][5][6].…”