Thermal spray coatings aluminum, applications

Guide for Selecting One-Coat Preconstruction or Prefabrication Painting Systems Interim Specification for the Application of Thermal Spray Coatings (Metallizing) of Aluminum, Zinc, and Their Alloys and Composites for the Corrosion Protection of Steel Latex Painting System for Industrial and Marine Atmospheres, Performance-Based... 

The selection of an alloy for a specific application is based on the cost and the corrosion resistance of the alloy in the environment of interest. It is also possible to subject the chosen alloy to a process by which the corrosion resistance of the selected material can be improved within the acceptable limits. Some of the corrosion prevention and protection strategies with respect to the aluminum-based alloys are (i) design (ii) alloy selection and joint sealants (iii) aluminum thermal spraying anodic coatings (iv) inhibitors (v) conversion and organic coatings and (vi) cathodic protection. 

The addition of aluminum to zinc is beneficial in improving its corrosion resistance and has resulted in development of coatings with aluminum contents between 5 and 55 %, like Galfan and Galvalume for hot dip and Zn-15 % Al alloy for thermal spray applications. In these coatings, the initial... 

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