What are the common types of plating? What are the applications in?
Author: Marisa
Black plating, such as black zinc, black nickel, etc. are used in optical electronics and medical equipment.
Gold plating, silver is the best conductor of electronic products, but also to improve the high decorative products, but the price is more expensive, generally used in electronic products conductive aspects, such as high-precision wire terminals and other plating.
Copper, nickel, chromium is the most popular mixed plating in the field of modern science, no matter in the decorative, corrosion resistance, are currently the world's most popular plating. They are inexpensive and can be used in sports equipment, lighting, and most of the electronics industry.
Copper plating, white tin copper is developed in the 70's and 80's for environmentally friendly plating, bright white, is the first choice of the jewelry industry. Bronze (lead tin copper can be made to imitate gold, so it is a better decorative plating), but the anti-color of copper is relatively poor, so the development is relatively slow.
Zinc plating: zinc plating layer is greenish-white, easily soluble in acid, alkali. Because the standard potential of zinc is more negative than that of iron, it can provide reliable electrochemical protection for iron and steel, and zinc can be chosen as the protective layer for iron and steel products used in industrial and marine atmospheres.
Hard chromium, chromium plating deposited under certain conditions has high hardness and wear resistance, the hardness reaches HV900-1200kg/mm, chromium is the highest hardness of the commonly used plating, can improve the wear resistance of the parts, prolong the service life. Such as work, mold, measurement, clamps, and so on. Therefore, this plating is an indispensable treatment for cylinder, hydraulic and transmission system.