A metal plate to be used in the manufacture of a deposition mask comprises: a base metal plate; and a surface layer disposed on the base metal plate, wherein the surface layer includes elements different from those of the base metal plate, or has a composition ratio different from that of the base metal plate, and an etching rate of the base metal plate is greater than the etching rate of the surface layer. An embodiment includes a manufacturing method for a deposition mask having an etching factor greater than or equal to 2.5. The deposition mask of the embodiment includes a deposition pattern region and a non-deposition region, the deposition pattern region includes a plurality of through-holes, the deposition pattern region is divided into an effective region, a peripheral region, and a non-effective region, and through-holes can be formed in the effective region and the peripheral region.

A method of applying a protective coating to an article comprises the steps of a) depositing aluminum in a surface region of an article, and b) depositing chromium is the surface region of the article subsequent to step a), whereby at least a portion of the chromium replaces at least a portion of the aluminum. Another method and an article are also disclosed.

Molybdenum is alloyed into stainless steel surface by electro-spark deposition technique. Shielding gas is used during electro-spark deposition process to minimize the oxidation of materials. Control of electro-spark voltage, frequency, capacitance, time can determine the alloying depth of Molybdenum. The alloyed surface thickness varies from 5 m to 80 m depending on the electro-spark deposition parameters. The alloyed surface comprises, by weight, 15 to 40% of Molybdenum, 8 to 22% of Cr, 0-15% of other alloy elements and impurities. The molybdenum alloyed stainless steel surface exhibits improvement in micro-hardness, wear resistance, and especially corrosion resistance in sodium chloride solutions. Thus, the present invention would be utilized in marine and handling of brines application, as well as in other applications which better corrosion resistance of stainless steel is desired.

The present invention provides a Cr-rich cathodic arc coating, an article in turbine blade coated with the chromizing over cathodic arc coating, and a method to produce the coating thereof. The Cr-rich cathodic arc coating in the present invention comprises a cathodic arc coating and a diffusion coating deposited atop the cathodic arc coating to enforce hot corrosion resistance. The hardware coated with the chromizing over cathodic arc coating in the present invention is reinforced with superior-hot corrosion resistance. The present invention further provides a novel method for producing the chromizing over cathodic arc coating by re-sequencing coating deposition order. The method in the present invention is efficient and cost-reducing by eliminating some operations, e.g., DHT and peening, between the cathodic arc coating and the diffusion coating. The hot corrosion resistance in the present invention results from the high Cr content in the surface of the coating.

The present invention is intended to provide a roll-bonded laminate, in which an ultrathin metal layer is laminated on another metal without generation of wrinkles, cracks and the like. A roll-bonded laminate formed by lamination of at least three layers, which comprises a peelable carrier layer 10, an ultrathin metal layer 20 and a metallic foil 30, wherein the thickness of the ultrathin metal layer 20 is 0.5 ?m or more and 20 ?m or less.

A steel sheet for cans has, on the surface thereof, in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The chromium metal layer is deposited in an amount of 65-200 mg/m.sup.2, and the hydrous chromium oxide layer is deposited in an amount of 3-15 mg/m.sup.2 in terms of chromium. The chromium metal layer includes: a flat chromium metal layer that has a thickness of at least 7 nm; and a granular chromium metal layer that includes granular protrusions that are formed on the surface of the flat chromium metal layer. The maximum grain size of the granular protrusions is 100 nm or smaller. The number density of the granular protrusions per unit area is 10/?m.sup.2 or higher.

In some examples, an article including a substrate and a multi-layered coating on at least a portion of the substrate. The multi-layered coating including at least one nano-crystalline layer comprising a metal or a metal alloy and a corrosion resistant layer on the at least one nano-crystalline layer. The nano-crystalline layer defining an average grain size of less than 50 nanometers (nm) and the corrosion resistant layer including at least one of nickel metal, tin metal, zinc metal, cadmium metal, chromium metal, nickel-phosphorus alloy, nickel-sulfur alloy, nickel-boron alloy, nickel-cadmium alloy, nickel-zinc alloy, and tin-zinc alloy.

The invention relates to a method for manufacturing a metallized plastic product with a gold or silver hue, comprising the steps: galvanization of a surface of the plastic body for forming a galvanized chromium layer; deposition by evaporation of a metal layer directly on the galvanized chromium layer, the metal being copper, a mixture of metals comprising at least 70% by weight of copper, a copper alloy comprising at least 70% by weight of copper, or aluminum. The invention also relates to a metallized plastic product (1) with a gold or silver hue, comprising a plastic body (2), a galvanized chromium layer (3, 4, 5, 6), and a metal layer (7), the metal being copper, a mixture of metals comprising at least 70% by weight of copper, an alloy containing copper in an amount of at least 70% by weight, or aluminum.

Provide is a metal-coated liquid-crystal polymer film that is suitable for microcircuit processing and capable of reducing the transmission loss of circuits. The metal-coated liquid-crystal polymer film comprising: a polymer film comprising a polymer film main body capable of forming an optically anisotropic melt phase; a first metal layer layered on at least one side of the polymer film main body; and a second metal layer layered on the first metal layer, wherein in an analysis of oxygen concentration in a thickness direction using XPS, the average oxygen concentration of the first metal layer is 2.5 atom % or less.

A black plated resin part includes a resin base material, an underlying plating layer including a copper plating layer and a nickel plating layer formed in this order on the resin base material, a black chromium plating layer formed on the nickel plating layer, formed of trivalent chromium, and having a film thickness of not less than 0.15 m, and a corrosion resistant film formed on the black chromium plating layer, formed of chromic phosphate or molybdenum phosphate, and having a film thickness of not less than 7 nm. A brightness of the black chromium plating layer seen through the corrosion resistant film is expressed by an L* value of not more than 54 based on the L*a*b* color system.