This disclosure relates to hydrophobic metal phosphate ceramic comprising a Group IV element of silicon, germanium, tin, or lead having at least one hydrocarbon covalently bonded thereto. Methods of providing water proofing and/or anti-corrosion protection are provided.

The purpose of the present invention is to provide a water-based treatment solution which makes it possible to form a chemical-conversion-treated coating film having further improved corrosion resistance. The present invention relates to a water-based treatment solution for a chemical conversion treatment of a steel sheet or a plated steel sheet. The water-based treatment solution contains an organic resin including a fluororesin, a Group-4A metal compound, and at least one binding promoter selected from the group consisting of dimethyl adipate, diethyl adipate, di(iso)propyl adipate, di(iso)butyl adipate, dimethyl phthalate, diethyl phthalate, di(iso)propyl phthalate and di(iso)butyl phthalate.

An inorganic coating solution composition including an alkali metal silicate, a curing agent, a dispersant, a defoamer, and a solvent, wherein the curing agent is phosphoric acid (H.sub.2PO.sub.4), the dispersant is at least one selected from among Tween 20, Tween 40, Tween 60, Tween 80, polyvinyl pyrrolidone, polyethylene glycol 400 and polyvinyl alcohol, and the defoamer is at least one selected from among a silicone-based defoamer, an alcohol-based defoamer, a mineral oil-based defoamer and a powder defoamer.

An inorganic coating solution composition including an alkali metal silicate, a curing agent, a dispersant, a defoamer, and a solvent, wherein the curing agent is phosphoric acid (H.sub.2PO.sub.4), the dispersant is at least one selected from among Tween 20, Tween 40, Tween 60, Tween 80, polyvinyl pyrrolidone, polyethylene glycol 400 and polyvinyl alcohol, and the defoamer is at least one selected from among a silicone-based defoamer, an alcohol-based defoamer, a mineral oil-based defoamer and a powder defoamer.

A method of improving corrosion and mar resistance of steel components by creating a black magnetite finish, with a medium temperature process, prior to application of a phosphate layer coating.

This disclosure relates to hydrophobic metal phosphate ceramic comprising a Group IV element of silicon, germanium, tin, or lead having at least one hydrocarbon covalently bonded thereto. Methods of providing water proofing and/or anti-corrosion protection are provided.

This disclosure relates to hydrophobic metal phosphate ceramic comprising a Group IV element of silicon, germanium, tin, or lead having at least one hydrocarbon covalently bonded thereto. Methods of providing water proofing and/or anti-corrosion protection are provided.

A reducing agent composition for iron oxide and/or iron hydroxide comprising components (A) to (C) and having a pH within a range from 7 to 11, wherein when the component (A) is dissolved in an aqueous solution containing the components (B) and (C), a redox potential reaches ?600 mV or less within 20 minutes after the dissolution of the component (A) is started, and a rate of change in redox potential reaches a value of 0 mV or more per minute within 60 minutes after the dissolution of the component (A) is started; and a method for reducing iron oxide and/or iron hydroxide, comprising bringing the reducing agent composition into contact with iron oxide and/or iron hydroxide. (A): Reducing agent; (B): Water-soluble metal chelating agent; and (C): Amine compound.

A method produces a coating treatment solution to be used for forming a ferrite film having a spinel type crystal structure MFe.sub.2O.sub.4 on a surface of a soft magnetic material. The coating treatment solution contains a solution having a metal element and Fe. The metal element becomes divalent cations in the solution. The method prepares a first solution containing the metal element M and Fe, prepares a second solution by adding an alkaline solution to the first solution in a non-oxidizing atmosphere. The method produces the coating treatment solution by using the second solution.

A method produces a coating treatment solution to be used for forming a ferrite film having a spinel type crystal structure MFe.sub.2O.sub.4 on a surface of a soft magnetic material. The coating treatment solution contains a solution having a metal element and Fe. The metal element becomes divalent cations in the solution. The method prepares a first solution containing the metal element M and Fe, prepares a second solution by adding an alkaline solution to the first solution in a non-oxidizing atmosphere. The method produces the coating treatment solution by using the second solution.