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The salt spray test (or salt fog test) is a standardized and popular corrosion test method, used to check corrosion resistance of materials and surface coatings.Usually, the materials to be tested are metallic (although stone, ceramics, and polymers may also be tested) and finished with a surface coating which is intended to provide a degree of corrosion protection to the underlying metal.
PPG Industries, Inc. is an American Fortune 500 company and global supplier of paints, coatings, and specialty materials. With headquarters in Pittsburgh, Pennsylvania, PPG operates in more than 70 countries around the globe. By revenue it is the second largest coatings company in the world behind Sherwin-Williams. [2]
Sayerlack was established in 1954 in Bologna for the purposes of producing coatings to finish, protect and ennoble wood, with particular emphasis on furniture, accessories for furniture and fittings. In 1958, the first R&D centre opened, and in 1988, the first waterborne coatings were created, representing an innovative product for the industry.
On July 6, 2011, Sherwin-Williams acquired Leighs Paints, based in Bolton UK, manufacturers of intumescent and high performance industrial coatings. [21] On June 4, 2012, Sherwin-Williams acquired Geocel Holdings Corp for an undisclosed amount. [22] Sherwin-Williams acquired the Valspar Corporation on March 20, 2016, for $11.3 billion. [23]
AkzoNobel is a leading coatings company whose key products include automotive coatings, specialised equipment for the car repair and transportation market and marine coatings. The coatings groups consist of the following business units: [46] [47] Decorative Paints; Marine and Protective Coatings; Automotive and Specialty Coatings; Industrial ...
Chromate conversion coating or alodine coating is a type of conversion coating used to passivate steel, aluminium, zinc, cadmium, copper, silver, titanium, magnesium, and tin alloys. [ 1 ] : p.1265 [ 2 ] The coating serves as a corrosion inhibitor , as a primer to improve the adherence of paints and adhesives , [ 2 ] as a decorative finish, or ...
An alkaline pH has been shown to have a beneficial effect on the corrosion resistance for steel. [6] The mechanism for copper begins the same as for steel, evolution of the inhibitor. Once at the copper surface however, the inhibitor will form a copper benzotriazole complex which is protective. [9]
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.