Described are metal bodies made of magnesium-containing metal and having a magnesium fluoride surface passivation region formed at a surface of the body, as well as methods of forming a magnesium fluoride surface passivation region at a surface of a metal body, and uses for the bodies.

The present invention provides a contact member that strikes a balance between low electrical resistance and sliding durability. A contact member of the invention has a metal base and a coating disposed on at least part of the metal base. The coating contains fluorinated oil having a polar group, and metal particles surface-treated with a fluorine-based compound having a polar group.

The present invention provides a contact member that strikes a balance between low electrical resistance and sliding durability. A contact member of the invention has a metal base and a coating disposed on at least part of the metal base. The coating contains fluorinated oil having a polar group, and metal particles surface-treated with a fluorine-based compound having a polar group.

Described are metal bodies made of magnesium-containing metal and having a magnesium fluoride surface passivation region formed at a surface of the body, as well as methods of forming a magnesium fluoride surface passivation region at a surface of a metal body, and uses for the bodies.

Described are metal bodies made of magnesium-containing metal and having a magnesium fluoride surface passivation region formed at a surface of the body, as well as methods of forming a magnesium fluoride surface passivation region at a surface of a metal body, and uses for the bodies.

The present invention is related to an aqueous post treatment composition for providing a post treatment layer on at least a part of a passivation layer, which is covering at least a part of a zinc layer being on at least a part of an iron containing substrate, characterized in that the aqueous post treatment composition comprises at least one chromium (III) ion source and at least one compound containing the chemical element silicon; wherein a molar ratio of silicon versus chromium is given in said composition, with the proviso that said molar ratio is ranging from 2600:1 to 1:1 for the zinc layer obtained by an electrolytic acid zinc deposition process; or that said molar ratio is ranging from 5200:1 to 1:1 for the zinc layer obtained by an electrolytic alkaline zinc deposition process.

The present invention is related to an aqueous post treatment composition for providing a post treatment layer on at least a part of a passivation layer, which is covering at least a part of a zinc layer being on at least a part of an iron containing substrate, characterized in that the aqueous post treatment composition comprises at least one chromium (III) ion source and at least one compound containing the chemical element silicon; wherein a molar ratio of silicon versus chromium is given in said composition, with the proviso that said molar ratio is ranging from 2600:1 to 1:1 for the zinc layer obtained by an electrolytic acid zinc deposition process; or that said molar ratio is ranging from 5200:1 to 1:1 for the zinc layer obtained by an electrolytic alkaline zinc deposition process.

The present invention provides a novel method for producing a structure comprising an assembly of metal-based particles. Provided is a method for producing a layered product, the layered product comprising a substrate having a three-dimensional surface; and a metal-based particle assembly layer arranged on the three-dimensional surface and comprising a plurality of metal-based particles arranged apart from each other, the method comprising the step of forming the metal-based particle assembly layer on the three-dimensional surface by immersing the substrate in a plating solution containing a cation of a metal constituting the metal-based particles to reduce the cation, wherein a V.sub.S/V.sub.L ratio of volume V.sub.S [cm.sup.3] of the substrate to volume V.sub.L [cm.sup.3] of the plating solution is 0.03 or less.

The present invention provides a novel method for producing a structure comprising an assembly of metal-based particles. Provided is a method for producing a layered product, the layered product comprising a substrate having a three-dimensional surface; and a metal-based particle assembly layer arranged on the three-dimensional surface and comprising a plurality of metal-based particles arranged apart from each other, the method comprising the step of forming the metal-based particle assembly layer on the three-dimensional surface by immersing the substrate in a plating solution containing a cation of a metal constituting the metal-based particles to reduce the cation, wherein a V.sub.S/V.sub.L ratio of volume V.sub.S [cm.sup.3] of the substrate to volume V.sub.L [cm.sup.3] of the plating solution is 0.03 or less.

A reactive primer compound is provided that can be used as an adhesion promoter on various substrates, particularly metal-containing substrates. The reactive primer compound has a diketone group that can form chelates with various metals through coordination chemistry plus an oxirane group that can undergo ring opening reactions with components of an adhesive or coating composition. Articles containing a metal-containing substrate and a primer layer, which includes the reactive primer compound, positioned adjacent the metal-containing substrate are also provided. The articles can further include a cured composition or a cured composition formed therefrom, wherein the curable composition typically includes an epoxy resin and a curative for the epoxy resin.