Sign In | Create Account

 
|| आ नो भद्राः क्रतवो यन्तु विश्वतः || Let nobel thoughts come to us from everywhere, from all the world || 1.89.1 Rigveda ||
Section : Science and Technology
Latest: 

What is Electroplating?
 
Electroplating is a process of metal coating through electrolysis. Electrolysis is passing of an electric current through an electrolyte solution. In the other words, it is the process to cover a metal with a thin coating of another metal either for protection against corrosion or for beautification of house hold items.

By Samvaad Bharti Post




Electroplating is a process of metal coating through electrolysis. Electrolysis is passing of an electric current through an electrolyte

 solution. In the other words, it is the process to cover a metal with a thin coating of another metal either for protection against

 corrosion or for beautification of house hold items. The  electroplating may also be used to impact certain other properties to a

 metal surface, such-frictional, electrical, magnetic or optional properties. Do you know how metals are electroplated?

 

 Electroplating is done in large vats containing a solution of some suitable salt of the metal to be coated. Bars are arranged inside the

 vats. This metal body, called the work piece, makes the cathode. When the electric current passed to the solution, by connecting

 the positive terminal of the battery to the anode and negative terminal to the cathode, the metal ions from the solution go towards

 the cathode and get deposited on the work piece and form a thin anode goes on dissolving in the solution and finally gets deposited

 on the work piece.

 

 To ensure an even deposit, the work, piece may be slowly rotated inside the vat. The surface to the work piece must be clean and

 free from grease, dirt or oxide films. These days the metals that are electroplated include silver, gold, nickel, copper and chromium.

 For silver palting, double cyanides of potassium and silver are used. The silver plating is usually done on brass tablewares such as

 spoons, forks and other utensils. It is also contain double cyanidesa of gold baths involve double sulphates of nickel and

 ammonium. The copper sulphate with small quantities of sulphuric acid. The chromium plating is done by using the solution of 

 chromic acid and chromic sulphate with small quantities of chromium carbonate usually used machine parts.

 

 The other metals which are electroplated commercially include cadmium, cobalt, platinum, rhodium, tin, zinc, etc. In certain cases

 two or more metals are plated simultaneously as alloy coatings, e.g. copper-zinc, copper, tin-nickel and nickel-cobalt.

Comment Form

  Name

 Email Address

 Website

 Write Your Comment Here

 


0 Comment


Suggested articles...

German experts in Kanpur to assist in cleaning Ganga
By Anant Shekhar Mishra,TOI

Read More
How Engineers Think
By Guru Madhavan, Book Excerpts

Read More
Vedic Framework And Modern Science
By Rajiv Malhotra

Read More
In a World First, Indian Marine Scientists Restore Thousands of Years Old Dead Coral Reef
By Aparna Menon

Read More
Stephen Hawking warns artificial intelligence could end mankind
By Rory Cellan-Jones Technology correspondent BBC News

Read More
One in every 3 Apple engineers is Indian
By Shilpa Phadnis & Sujit John,TNN

Read More
Rig Yajur Atharva Vedas Hymns Explain Electricity.Text
By Venkata Ramanan

Read More
Lab grows artificial skin for first time
By Dr Dusko Ilic

Read More
Mystery behind brightest objects in universe solved
By journal Nature

Read More
Vedic Framework and Modern Science
By Rajiv Malhotra

Read More