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Combining Thermal Spray Zinc And Hot-Dip Galvanizing To Achieve An All Metallic Zinc Coating System

Corrosion protection of infrastructure and assets is an area of increasing focus due to increasing financial and safety concerns. On a global scale, corrosion has an annual cost of $2.5 trillion (USD).1 To combat the deleterious effects of this natural phenomenon, specifiers and owners have many choices in terms of materials and protective coatings. Consideration of both initial and life cycle costs has become more important in the age of increased competition and shrinking maintenance budgets.  

Product Number: 51322-18207-SG
Author: Bernardo Duran
Publication Date: 2022
$20.00
$20.00
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This paper discusses methods and strategies for combining thermal spray zinc and hot-dip galvanizing to create an all-metallic zinc corrosion protection system. Hot-dip galvanizing is a mature industry and is commonly specified for infrastructure projects, whereas thermal spray zinc and its alloys are gaining traction with many asset owners and departments of transportation (DOTs). This has created questions about how best to combine both systems for exceptional corrosion resistance and material durability. Topics covered include processing variations, application advantages for new versus rehabilitation projects, and how material size influences the preferred processing methods. 

This paper discusses methods and strategies for combining thermal spray zinc and hot-dip galvanizing to create an all-metallic zinc corrosion protection system. Hot-dip galvanizing is a mature industry and is commonly specified for infrastructure projects, whereas thermal spray zinc and its alloys are gaining traction with many asset owners and departments of transportation (DOTs). This has created questions about how best to combine both systems for exceptional corrosion resistance and material durability. Topics covered include processing variations, application advantages for new versus rehabilitation projects, and how material size influences the preferred processing methods.