Sustainable Electroless Ni-P Deposition on Mild Steel with Natural Reductants from Lawsone | Chapter 1 | Recent Developments in Chemistry and Biochemistry Research Vol. 8]

This research investigates the effects of varying bath concentrations, operating temperature, and plating time on the electroless nickel deposition process using Lawsone extract from Lawsonia inermis. The study explores how complex agents and plating parameters influence the properties and structure of the deposited layer. The electroless nickel plating bath is optimized for environmental sustainability, utilizing NiSO₄•7H₂O as the primary salt. Preliminary findings suggest that the inclusion of a complex agent enhances the plating growth rate while maintaining an optimal pH of 6-8. The study highlights the potential for low phosphorus content, high density, and minimal porosity in the deposits, underscoring their excellent corrosion resistance. This work presents a novel, eco-friendly approach to nickel deposition with significant applications in industries requiring durable and corrosion-resistant coatings.

 

Author (s) Details

 

H. Asia Thabassoom
PG and Research Department of Chemistry, Jamal Mohamed College, 620020, India.

 

J. Felicita Florence
PG and Research Department of Chemistry, Holy Cross College, 620002, Affiliated to Bharathidasan University, Tamil Nadu, India.

 

Please see the book here:- https://doi.org/10.9734/bpi/rdcbr/v8/2714 

ELectroless Ni-W-P Alloy Deposition on Mild Steel Using Lawsone Isolated from Lawsonia inermis Linn Leaf Acts as Complexing Agent | Chapter 7 | Recent Developments in Chemistry and Biochemistry Research Vol. 1

Electroless plating, sometimes referred to as chemical plating or auto-catalytic plating, is a non-galvanic plating method that incorporates numerous continuous chemical processes in an aqueous solution without the usage of external electrical power. Electroless coatings are used in many industries nowadays due to their good properties, such as corrosion and wear resistance, hardness and uniform thickness. Nickel sulphate and Sodium tungstate was used as Nickel and tungsten sources respectively, Sodium hypophosphite was used as a reducing agent. The effect of Lawsone isolated from Lawsonia inermis Linn leaf extract and found that complexing agent Sodium citrate was replaced by Lawsone which enhances plating properties. In order to characterise Ni-W-P surfaces, SEM, EDAX and XRD methods were used. We looked at the Ni-W-P corrosion resistance behaviour as well as electrochemical techniques such as potentiodynamic polarisation curve and electrochemical impedance spectroscopy. Corrosion tests show that electroless Ni-W-P coatings deposited in all conditions significantly improve mild steel corrosion resistance. Metal that is electrolessly deposited has good corrosion resistance.

Author(s) Details:

H. Asia Thabassoom,
Department of Chemistry, Jamal Mohamed College (Autonomous), Affiliated to Bharathidasan University, Tiruchirappalli-620002, India.

J. Felicita Florence,
Department of Chemistry, Holy Cross College (Autonomous), Affiliated to Bharathidasan University, Tiruchirappalli-620002, India.

Please see the link here: https://stm.bookpi.org/RDCBR-V1/article/view/13629