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An early example of zinc white's use in painting [1]: 183 Zinc white is an inorganic pigment composed of zinc oxide that has been used by painters since the late eighteenth century. [ 1 ] Alongside lead and titanium white , it is among the three most prominent white pigments that are commercially available today. [ 1 ]
The chromate coating acts as paint does, protecting the zinc from white corrosion, thus making the part considerably more durable, depending on the chromate layer's thickness. [8] [9] [10] The protective effect of chromate coatings on zinc is indicated by color, progressing from clear/blue to yellow, gold, olive drab and black.
Chemical coloring of metals is the process of changing the color of metal surfaces with different chemical solutions. The chemical coloring of metals can be split into three types: electroplating – coating the metal surface with another metal using electrolysis. patination – chemically reacting the metal surface to form a colored oxide or ...
Zinc chromate's main use is in industrial painting as a coating over iron or aluminium materials. [8] It was used extensively on aircraft by the US military, especially during the 1930s and 1940s. It is also used in a variety of paint coatings for the aerospace and automotive industries. [9]
In 2004, Sherwin-Williams acquired Paint Sundry Brands for $295 million and Duron Inc. for $253 million. [19] [20] In June 2007, Sherwin-Williams announced that it had completed an acquisition of M.A. Bruder & Sons, a manufacturer and distributor of paints and coatings. [21]
Phosphate conversion coating is a chemical treatment applied to steel parts that creates a thin adhering layer of iron, zinc, or manganese phosphates to improve corrosion resistance or lubrication or as a foundation for subsequent coatings or painting. [1] [2] [3] It is one of the most common types of conversion coating.