Disclosed are a protective coating layer, and a preparation method and use thereof. The present application provides a protective coating layer, including: a rusty-surface liquid layer, a nano-zinc yellow epoxy primer layer, a nano-epoxy micaceous iron oxide (MIO) intermediate coating layer, and a nano-fluorocarbon top coating layer, where the rusty-surface liquid layer is applied on a metal substrate; the nano-zinc yellow epoxy primer layer is applied on a surface of the rusty-surface liquid layer; the nano-epoxy MIO intermediate coating layer is applied on a surface of the nano-zinc yellow epoxy primer layer; and the nano-fluorocarbon top coating layer is applied on a surface of the nano-epoxy MIO intermediate coating layer. The present application effectively solves the technical problem that the existing protective coating layer with nanoparticles exhibits poor adhesion to a substrate and cannot provide a protective effect for a long time.

A method using silicon dioxide improves the cathodic anticorrosion effect of ground coats, preferably of a zinc primer, based on epoxy-functional polymers and at least one metal particle.

A chemical composition comprising a mixture of a non-curing organic polymer base with a viscosity between 300 and 10,000 centipoises at 20 degrees C. and a molecular weight of between 1,000 and 100,000. Into the base is mixed at least one of: metal particles (coated or uncoated), inert particles and non-metal corrosion inhibitors such that reaches a viscosity of between 9,000 and 10,000,000 centipoises. The result is a paste that is useful in applying to metal aircraft parts to help prevent corrosion, including galvanic corrosion.

The present disclosure relates to an aqueous anti-corrosive paint containing ionized water, and the paint includes a main agent including zinc flakes and a curing agent for curing the main agent, including a silicate-based binder, in which the main agent and the curing agent contain ionized water.

A composition and method of synthesizing a composition from organic oils and industrial byproducts for use as a corrosion inhibitor coating is disclosed. The synthesis of a rapid setting ionomer is the result of iron-induced polymerization of oleic and linoleic acids, where an alkaline ionomeric reaction is facilitated with a small fraction of pure aluminum leaf at room temperature. At least one alkaline reagent is employed with at least one metallic additive to form metal complex ionomers that form a solid polymer. The resulting ionomer is stirred and applied on the substrate as a surface coating and it starts setting in less than thirty minutes.

A cut-and-processed product of a ZnAlMg-based plated steel material including a base steel material and a ZnAlMg-based plating layer covering a surface of the base steel material, in which a cut end surface of the cut-and-processed product is covered with a linear film in which a component of the ZnAlMg-based plating layer linearly flows, and a coverage of the cut end surface with the linear film is from 60 to 90%, a non-plated surface of the base steel material and the linear film around the non-plated surface, in the cut end surface of the cut-and-processed product, are covered with a repair coat, an initial coat resistivity is from 10 to 1000 /cm.sup.2 and a coat resistivity after immersion of the cut-and-processed product in 5% by mass salt water for 3 hours is from 5 to 50 /cm.sup.2, in the repair coat, and a thickness of the repair coat is from 10 to 100 m, as well as a guardrail utilizing the cut-and-processed product.

A treated zinc pigment that provides cathodic corrosion protection in aqueous zinc-rich coatings is described. The treated zinc pigment shows reduced gas generation in aqueous formulation.