What is the difference between zinc plating,nickel plating and chrome plating?

Electroplating is the process of using electrolysis to attach a metal film to the surface of metal or other materials to prevent metal oxidation, improve wear resistance, conductivity, light reflection, corrosion resistance and aesthetics.

Electroplating is divided into gold plating, silver plating, chrome plating, nickel plating and zinc plating. it is usualy use zinc plating, nickel plating and chrome plating in the field of metal manufacturing.

What is the difference between them?

zinc plating: Galvanizing refers to the surface treatment technology of plating a layer of zinc on the surface of metals, alloys or other materials for aesthetics and rust prevention.
Features: low cost, general anti-corrosion, silver white.
Application: screws, circuit breakers, industrial supplies, etc.
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Nickel plating: A method of plating a layer of nickel on metal or certain non-metals by electrolysis or chemical methods.
Features: beautiful, can be decorated, high price, slightly complicated craftsmanship, the color is silvery white and yellow.
Application: Energy-saving lamp holder, coins, metal parts, etc.

Chrome plating: Chromium is a kind of bright white metal with a bluish tint. It is a method of plating a layer of chromium on metal or some non-metals by electrolysis or chemical methods.
Features: There are two types of chromium plating. The first one is for decorative purposes. It has a bright appearance and good abrasion resistance. The anti-rust ability is not as good as galvanized and is worse than oxidation. The second is to increase the hardness and wear resistance of metal parts. .
Application: Bright decorative parts, tools, faucets, etc. on home appliances, electronics and other products.

In a word, the biggest difference between them as following :
1. Chrome plating is mainly to improve surface hardness, beauty and rust prevention. The chromium plating layer has good chemical stability, and has no effect in alkali, sulfide, nitric acid and most organic acids
2. Nickel plating is mainly wear-resistant, anti-corrosion, and anti-rust, and generally has a thinner thickness.
3. Galvanizing is mainly beautiful and anti-rust. Zn is an active metal that can react with acid, so it has poor corrosion resistance.