Metallized Coatings

Metallizing Is the Most Effective Long-lasting Protective Coating Available Today

Metallize coated products outlast the durability of paint by a factor of more than 2 to 1.  This form of coating is portable and ideal for protective coating of marine vessel and other port structures, bridges, water tanks, dams and locks. Structures of all types can be metallized with the typical materials used for the coating being powdered zinc, aluminum or a combination of both. It is a quick application process generally requiring no cure time once the metal coating is applied.  A major side advantage of metallized coatings using sprayed zinc or aluminum is the elimination of polluting volatile organic compounds (VOC’s) during the process. Metalizing is also a “cold process” when compared to welding or galvanizing with virtually no risk of weld damage or distortion to the steel.

With minor periodic maintenance a sprayed metal coating can provide a service life well in excess of 30 years. Another advantage is it may not be necessary to have to blast a metallized coating at time of resurfacing.

Advanced Marine Preservation possesses the equipment and trained personnel to analyze your particular resurfacing project and recommend the best method of metallizing for its specific requirements.  If you are considering metallized coating as an otion for protective coating, with locations in marine and industrial centers in Hampton Roads, Virginia; Atlantic Beach, FL; Los Angeles and San Diego CA,  we may be the right source for you. Give us a call today about your next marine or industrial project. 

Applications for Metallized Coating

  • Marine Vessels
  • Steel Pilings
  • Potable Water Tanks
  • Power Transmission Structures
  • Communication Towers
  • Wind Turbines
  • Steel Bridges

Metal Coatings Used and Their Benefits

Aluminum
Ideal for use in harsh marine environments with arc-sprayed aluminum possessing a high bonding strength on pristine prepared surfaces.

Zinc
Offers better galvanic gap protection in the coating and is also easier to spray over aluminum with some spray systems.

Zinc-Aluminum (85/15 Ratio) Combination
An 85% zinc – 15% aluminum combines the benefits of both materials in the metallized coating however it is a more volatile process in application and expertise is required to working with this material method. Zinc and aluminium is best for anti-corrosion coatings on steel. 

Methods of Applying Metallized Coatings

Combustion Thermal Spray
Referred to as a “cold process” as the surface being applied too can be a low temperature avoiding changes in the substructure and eliminate risk of distortion. Ideal for applying anti-corrosion coatings where the applied metal is melted in a flame and atomized using compressed air to form a spray. When the spray meets the surface of the substrate material, it solidifies rapidly forming a coating.

HVOF – High Velocity Oxygen Fuel
Also a thermal spray process however this process was developed to produce extremely high spray velocity. The metallized coating material is fed at high pressure, thus coatings are very dense and demonstrate low residual tensile stress for thicker coatings to be applied over other processes.

Plasma Spraying
Plasma spraying is also a “cold process” and refers to taking a powder form of the sprayed material that is injected into a plasma flame that rapidly heats the material and blown out onto the surface at high velocity. The advantage of plasma spraying is it can spray very high melting point materials such as tungsten and ceramics like zirconia. The coatings are also much much denser, stronger and cleaner than the other thermal spraying processes.

Arc Spraying – Electric Arc
The main focus of arc spraying is for anti-corrosion coatings of zinc and aluminium on large components. The arc spraying process employs a pair of electrically conductive wires melted by an electric arc. Much like the other processes, the molten material is atomized by compressed air and sprayed onto the substrate surface.