Abstract
The paper presents the results of operational tests of thermal sprayed zinc coatingsof various thicknesses on non-alloy steel substrates. The resistance of coatings to:variable temperature cycles, increased ambient humidity, salt fog as well as the electri-cal resistance of the coating and its adhesion to the steel substrate were tested. It hasbeen shown that Zn coatings has a high corrosion resistance in various atmospheric conditions and have satisfactory properties so they can be protective layers of ma-chine parts used in the armaments industry.
Highlights
Products for special purpose, e.g. military vehicles must meet specific requirements, much more restrictive than civilian vehicles
A difficult condition to meet is to provide resistance to the salt fog that occurs over the seas and oceans
These coatings must be resistant to atmospheric conditions and meet the requirements of electromagnetic compatibility, i.e. they must not interfere with the operation of other devices and must be resistant to external interference
Summary
Products for special purpose, e.g. military vehicles must meet specific requirements, much more restrictive than civilian vehicles. Military vehicles due to their features, such as high mechanical strength, specialized equipment, or modern software become very expensive, that is why a long service durability is required from them. It is obtained by selecting the elements with the highest reliability coefficient. External elements that are directly exposed to these factors are made of materials resistant to corrosion or protected by protective coatings These coatings must be resistant to atmospheric conditions and meet the requirements of electromagnetic compatibility, i.e. they must not interfere with the operation of other devices and must be resistant to external interference. The aim of the work was to test resistance to atmospheric factors and selected functional properties of flamesprayed zinc coatings in the context of their use in products for military use
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