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WHAT IS IT?
EonCoat™ CR coating is a fundamentally new technology for alloying metal oxides to non-alloy steel or iron to form an inert layer that can no longer react to oxygen or moisture. The water-based, two-part spray coating then forms a dense, protective ceramic over the corrosion-resistant alloy. The coating is both a primer for bare metal and a topcoat. Coated equipment can be returned to service in about one hour, regardless of thickness applied.
WHY USE IT?
To achieve the corrosion resistance of an alloy and the abrasion resistance of a ceramic. The coating withstands long periods of immersion in liquids with pHs ranging from 6 to 11 including aggressive solvents like MEK, acetone and xylene, and shorter term (splash) exposure to an even wider range of chemicals. This fire-retardant (0 flame spread and 0 smoke generation) coating is typically applied at 20 mils for corrosion protection, but can be built to thicknesses of between 12 and 36 mils in one application using multiple passes of a dual-component spray gun.
HOW TO APPLY?
A SSPC-SP6/NACE 3 (commercial blast) cleaning and removal of dust, debris, oil and other contaminants is recommended for full bonding strength. EonCoat CR coating chemically (covalently) bonds to steel, even oxidized steel. Apply on surfaces with temperatures from 50° to 110°F/10° to 43°C, 30% to 95% humidity. Apply using plural systems with stainless steel lowers and A/B mixing in the spray gun. Matte finish, with a standard color of white. Can be top-coated with EonThane™ urethane top-coat or any quality coating, including high-gloss.
WHERE CAN IT BE USED?
Hundreds of industrial and OEM applications requiring alloyed corrosion protection and abrasion resistance. In addition to corrosion protection, EonCoat™ CR is also a zero flame-spread and zero smoke-generation fire retardant, with zero off-gassing during application, curing, or flame exposure. EonCoat™ CR coating is water resistant and can be used to create washdown areas capable of withstanding steam and high-pressure cleaning. Available now, directly from the manufacturer.
ALLOYED CORROSION PROTECTION FOR STEEL
EonCoat™ CR coating is fundamentally different technology, not just a modestly improved polymer. Conventional polymers protect in one of two ways: by shielding the surface from corrosion catalysts or by creating a sacrificial layer. By contrast, a single application of EonCoat CR coating converts the steel’s surface into a corrosion-resistant alloy which is then coated with layers of self-firing, abrasion-resistant ceramic.
A dual-component spray gun mixes Part A (acid phosphate) with Part B (base minerals and metal oxides, in a water slurry). The mixture creates an exothermic reaction, causing the sprayed coating to rise 2° to 15°F (1° to 8°C) within a few minutes (ambient condition dependent). The reaction incorporates the iron from the steel substrate. Metal oxides from part B, along with potassium and phosphate from part A, combine with the metal substrate to form a chemically bonded layer of hard stable oxides. This alloy layer becomes a stable metal complex. It is virtually insoluble, permanently inert, and unable to further react to oxygen and moisture.
CHEMICAL BONDING CREATES COVALENT LAYERS
The EonCoat CR reaction creates chemical bonds that are covalent, meaning there’s a sharing of the electrons between atoms. Any additional layers (e.g., spray passes) will also chemically bond to each other, with covalent bond strength. (Grit blasting is needed to remove EonCoat CR coating.)
Multiple passes of the spray gun build protective ceramic layers on top of the alloyed layer. For severe abrasion protection, you can simply spray on more coating — up to 36 mils thick.
HOW IT PROTECTS EVEN IF REMOVED
Traditional polymer coatings create a film structure which mechanically bonds to substrates that have been extensively prepared (e.g., SSPC-SP 5/NACE 1). If gouged, moisture and oxygen will migrate under the coating’s film from all sides of the gouge. Moisture and heat are then trapped by the film, creating a “greenhouse effect,” promoting corrosion and blistering.
By contrast, the same damage to an EonCoat CR coated substrate will not spread corrosion. That’s because the steel is alloyed: surface oxides have been converted into an inert metal incapable of supporting oxidation. To see this demonstrated, turn to page 4 for our NASA-designed corrosion tests.
QUICKLY REPAIRED OR RECONDITIONED
Typically, all that’s needed is a quick cleaning to remove surface contaminants. As both primer and topcoat, even bare metal can be fully repaired in one application, using multiple spray passes to match the thickness of the surrounding coating. EonCoat CR coating can also be ground, torched, or cut without creating off-gassing fumes or noxious odors and without clogging grinding or cutting equipment.