This invention relates to galvanic aluminum alloy powder-pigments coated with semi-conducting corrosion-inhibiting compositions and particularly to the process for preparing said coated powder-pigments for coating substrates to inhibit corrosion. The coated aluminum alloy powder-pigments are electrically active and prevent corrosion of metals which are more cathodic (electropositive) than the coated-aluminum alloy pigments.

A two-part epoxy coating composition for producing an adherent coating for articles such as large liquid storage tanks. The two-part epoxy coating composition includes a first liquid comprising a polyepoxide having a described formula and having an estrogenic agonist activity less than that of bisphenol S, and a second liquid comprising a curing agent configured to react with the polyepoxide under ambient conditions.

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.

In an embodiment, the present disclosure pertains to a method of forming a self-assembled monolayer coating on a surface of a substrate. In general, the method includes polishing the substrate, cleaning the substrate, and creating a plurality of bonding sites on the surface of the substrate for head groups of an organofunctional silane molecule to bond. In some embodiments, the creating includes at least one of a liquid-phase chemistry process or a dry plasma chemistry process. In some embodiments, the method further includes coating the substrate with a silane coating solution. In some embodiments, the coating is performed in a controlled environment. In some embodiments, the controlled environment includes an anhydrous environment free of at least one of water or moisture. In a further embodiment, the present disclosure pertains to a heat transfer composition having a coating thereon applied via the methods of the present disclosure.