Abstract: A coated article includes a substrate and an anti-corrosion layer formed on the substrate. The substrate is made of aluminum or aluminum alloy. The anti-corrosion layer is an aluminum-copper alloy layer implanted with manganese ions. The coated article has good corrosion resistance.

Abstract: A coated article includes a substrate, an anti-corrosion layer formed on the substrate, and a decorative layer formed on the anti-corrosion layer. The substrate is made of aluminum or aluminum alloy. The anti-corrosion layer is an aluminum-copper alloy layer. The coated article has improved corrosion resistance.

Abstract: A coating process for fatigue critical components is provided. The coating process comprises the steps of providing a substrate having a first modulus of elasticity, depositing a layer of a material having a second modulus of elasticity less than the first modulus of elasticity onto the substrate, and depositing a coating over the material layer.

Abstract: A composite material intended for components used in corrosive environments, wherein said material comprises a corrosion-resistant part and a load-bearing part, wherein said parts are disposed adjacent one another, wherein the corrosion-resistant part is a copper-aluminium alloy (Cu/Al) and wherein the load-bearing part is comprised of an iron-based (Fe), a nickel-based (Ni) or a cobalt-based (Co) alloy. The invention is characterized in that the diffusion barrier is disposed between the corrosion-resistant part and the load-bearing part, and in that the diffusion barrier contains one of the substances chromium (Cr) or iron (Fe) or iron (Fe) that contains one of the alloying substances chromium (Cr) or carbon (C).

Abstract: In an alloy coating film having a diffusion barrier layer and an aluminum reservoir layer on a substrate, the diffusion barrier layer is composed of a single phase that is a Re—Cr—Ni—Al system ? phase containing Al by less than 1 atomic %, or composed of a first phase which is the Re—Cr—Ni—Al system ? phase and one or more second phases selected from a ? phase, ?? phase and ? phase.

Abstract: A turbine component having a protective bilayer coating thereon comprising: a superalloy substrate; and a bilayer protective coating applied to the substrate wherein the bilayer protective coating comprises a first inner layer of platinum and aluminum; and a second outer oxidation-resistant layer applied over the first inner layer, the second outer layer comprising an MCrAlX alloy where M is selected from Fe, Ni and Co, and where X is yttrium or another rare earth element. A method of improving oxidation resistance of a Ni or Co-based superalloy turbine component comprising: depositing a bilayer protective coating on a turbine component by depositing a first inner platinum-aluminum layer on a surface of the turbine component; and depositing a second outer layer comprising an MCrAlX alloy over the first inner layer, wherein M is a metal selected from Fe, Ni and Co, and X is yttrium or another rare earth element.

Abstract: A process for joining a brass part and a silicon carbide ceramic part comprising: providing a brass part, a SiC ceramic part, a Al foil and a Ni foil; placing the SiC ceramic part, the Al foil, the Ni foil, and the brass part into a mold, the Al foil and the Ni foil located between the SiC ceramic part and the brass part, the Al foil abutting against the SiC ceramic part, the Ni foil abutting against the brass part and the Al foil; placing the mold into a chamber of an hot press sintering device, heating the chamber and pressing the brass part, the SiC ceramic part, the Al foil, and the Ni foil at least until the brass part, the SiC ceramic part, the Al foil and the Ni foil form a integral composite article.

Abstract: A method of welding including forming a filler material of a first oxide dispersoid metal, the first oxide dispersoid material having first strengthening particles that compensate for decreases in weld strength of friction stir welded oxide dispersoid metals; positioning the filler material between a first metal structure and a second metal structure each being comprised of at least a second oxide dispersoid metal; and friction welding the filler material, the first metal structure and the second metal structure to provide a weld.

Abstract: There is provided a manufacturing method of an aluminum structure, including a conductive treatment process of forming an electrically conductive layer on a surface of a resin molded body, the electrically conductive layer being made of one or more metals selected from the group consisting of gold, silver, platinum, rhodium, ruthenium, palladium, nickel, copper, cobalt, iron, and aluminum, and a plating process of plating the resin molded body subjected to the conductive treatment process with aluminum in a molten salt bath. The manufacturing method of an aluminum structure allows aluminum plating on the surface of even a porous resin molded body having a three-dimensional network structure. In particular, there is also provided a manufacturing method of an aluminum structure that can form porous aluminum having a large area.

Abstract: Cookware having improved uniform heat transfer over the entire cross section thereof, the cookware formed from a multi-layered composite metal having a layer of stainless steel roll bonded at or near the core of the composite to act as a thermal barrier and provide more uniform heat distribution on the cook surface. The stainless layer is roll bonded to layers of aluminum which, in turn, is roll bonded to layers of stainless steel or aluminum or copper. The layer of stainless steel adjacent to the cooking range may be a ferromagnetic grade of stainless steel if induction-type heating is desired. The cookware may include a non-stick surface applied thereto.

Abstract: Disclosed is a multilayer alloy coating film capable of maintaining heat resistance, high-temperature oxidation resistance and creep resistance for a long time even in an ultra high temperature environment. The multilayer alloy coating film comprises a barrier layer formed on a base surface, and an aluminum reservoir layer formed on the barrier layer and composed of an alloy containing Al. The barrier layer comprises an inner sacrificial barrier layer composed of an alloy containing Re, an inner stabilization layer formed on the inner sacrificial barrier layer, a diffusion barrier layer formed on the inner stabilization layer and composed of an alloy containing Re, an outer stabilization layer formed on the diffusion barrier layer, and an outer sacrificial barrier layer formed on the outer stabilization layer and composed of an alloy containing Re.

Abstract: The present invention relates to methods of fabricating nanostructures using a replacement reaction. In a preferred embodiment, metal particles in an inert atmosphere undergo a replacement reaction to form a layer on the metal particle which is removed to form a high surface area nanostructure. A preferred embodiment includes the fabrication of heater elements, powders and heater assemblies using the nanostructures.

Abstract: The present invention relates to a rust-preventive metallic component part in which a steel wire to which wire-drawing processing is performed is adapted into a substrate and which comprises a rust-preventive coating film being free from chromium on a surface of the substrate, and to a manufacturing method for the same; and its object is to provide a rust-preventive metallic component part whose rust-preventive coating film exhibits such good adhesiveness to substrate that it is not come off by elastic deformations in service, by sliding contacts at the time of transportation, and the like, and to provide a manufacturing method for the same.

Abstract: A slide member provided with an Al-based alloy layer including Si and having a first contoured surface having first planar surfaces and first convexities consisting of Si particles protruding from the first planar surfaces; an intermediate layer that coats the Al-based alloy layers an overlay that coats the intermediate layer; wherein 90% or more of the Si particles protruding from the first planar surfaces are configured to have a predetermined particle diameter of 2 ?m or less, the Si particles having the predetermined particle diameter being distributed in the Al-based alloy layer with a distance between centers of gravity of the Si particles having the predetermined particle diameter averaging 6 ?m or less, and wherein the overlay has a second contoured surface having second planar surfaces and second convexities conforming with the first planar surfaces and the first convexities of the first contoured surface.

Abstract: A substrate includes a metal portion and an underplate that is laser sintered to the metal portion. The metal portion has a melting point that is lower than a sintering temperature of the underplate.

Abstract: Provided is a metal foil with a carrier as a laminated body in which a carrier A and a metal foil B are placed alternately, wherein the metal foil with a carrier comprises a structure where the adjoining carrier A has an area which covers the entire surface of the metal foil B, and the edge of the carrier A protrudes partially or entirely from the metal foil B. The copper foil with a carrier is used for producing a single-sided laminated plate or a multilayer laminated plate of two or more layers or an ultrathin coreless substrate for use in a printed wiring board. In particular, this copper foil with a carrier is used for producing a laminated plate, and its objective is to improve the handling performance in the production process of a printed board and reduce costs by increasing the yield.

Abstract: The invention relates to a substrate having a bondable metal coating comprising, in this order, on an Al or Cu surface: (a) a Ni—P layer, (b) a Pd layer and, optionally, (c) an Au layer, wherein the thickness of the Ni—P layer (a) is 0.2 to 10 m, the thickness of the Pd layer (b) is 0.05 to 1.0 m and the thickness of the optional Au layer (c) is 0.01 to 0.5 m, and wherein the Ni—P layer (a) has a P content of 10.5 to 14 wt.-%. The deposit internal stress of the resulting Ni—P/Pd stack is not higher than 34.48 M?Pa (5,000 psi). Further, a process for the preparation of such a substrate is described.

Abstract: An electrical connector including a base pad formed of aluminum and having a bottom surface. An electrical contact can be connected to the base pad. A layer of copper can be on the bottom surface of the base pad.

Abstract: Cookware having improved uniform heat transfer over the entire cross section thereof, the cookware formed from a multi-layered composite metal having a layer of stainless steel roll bonded at or near the core of the composite to act as a thermal barrier and provide more uniform heat distribution on the cook surface. The stainless layer is roll bonded to layers of aluminum which, in turn, is roll bonded to layers of stainless steel or aluminum or copper. The layer of stainless steel adjacent to the cooking range may be a ferromagnetic grade of stainless steel if induction-type heating is desired. The cookware may include a non-stick surface applied thereto.

Abstract: Cookware having improved uniform heat transfer over the entire cross section thereof, the cookware formed from a multi-layered composite metal having a layer of stainless steel roll bonded at or near the core of the composite to act as a thermal barrier and provide more uniform heat distribution on the cook surface. The stainless layer is roll bonded to layers of aluminum which, in turn, is roll bonded to layers of stainless steel or aluminum or copper. The layer of stainless steel adjacent to the cooking range may be a ferromagnetic grade of stainless steel if induction-type heating is desired. The cookware may include a non-stick surface applied thereto.

Abstract: CVD aluminide coatings including a small concentration of a reactive, gettering element for surface active impurities dispersed therein are formed for improved oxidation resistance. The aluminide coatings are formed by CVD codeposition of Al and the gettering element on the substrate using coating gases for the gettering element generated either outside or inside the coating retort depending on the chlorination temperature needed for the particular gettering element.

Abstract: A reactive foil assembly for the packaging and presenting of a reactive foil. The reactive foil assembly comprising a reactive foil, a film, a flex circuit and an adhesive. The reactive foil is placed above the film such that a portion of the reactive foil does not overlap with the film. The flex circuit is also placed above the film such that the flex circuit is operably coupled to the reactive foil. The reactive foil assembly is placed over a surface such that the film adheres to the surface with the help of the adhesive. The reactive foil is ignited by an energy pulse provided by the power source and delivered by the flex circuit coupled to the power source. An exothermic reaction of the reactive foil is initiated, which provides a molten foil available for joining of two objects.

Abstract: A protective coating system includes a coating having a composition that includes about 5-40 wt % of chromium, of about 5-35 wt % of aluminum, about 0.1-9 wt % of at least one of silicon, hafnium, or magnesium, about 0.05-2 wt % of a Group IIIB Periodic Table element, a non-zero amount less than 13 wt % of at least one noble metal selected from platinum, palladium, and gold, and a balance including nickel, cobalt or iron.

Abstract: Fine-gained (average grain size 1 mm to 1,000 nm) metallic coatings optionally containing solid particulates dispersed therein are disclosed. The fine-grained metallic materials are significantly harder and stronger than conventional coatings of the same chemical composition due to Hall-Fetch strengthening and have low linear coefficients of thermal expansion (CTEs). The invention provides means for matching the CTE of the fine-grained metallic coating to the one of the substrate by adjusting the composition of the alloy and/or by varying the chemistry and volume fraction of particulates embedded in the coating. The fine-grained metallic coatings are particularly suited for strong and lightweight articles, precision molds, sporting goods, automotive parts and components exposed to thermal cycling. The low CTEs and the ability to match the CTEs of the fine-grained metallic coatings with the CTEs of the substrate minimize dimensional changes during thermal cycling and prevent premature failure.

Abstract: The present invention provides an alloy film of Mn or its Fe—Mn is depositable on a metalized alumina ceramic (Al2O3-SiO3) substrate for hermetically sealed glass-metal fusion used for aircraft switch assemblies. The coefficient of thermal expansion of Fe—Mn alloys appear to be fairly low, nearer to that of glass. Fe—Mn alloy film is an alternative to Fe64—Ni36 alloy films (Invar) normally used for glass to glass fusion purposes. Fe—Mn alloy films is also depositable directly on bare Alumina (Al2O3) substrate with or without zincating pretreatment. Similarly bright, smooth coherent film of Mn—Au or Fe—Mn—Ni Au alloys is depositable from an aqueous solution of simple salt bath or on Cu substrate without the use of cyanide without bridging with zincate processes.

Abstract: Free standing articles or articles at least partially coated with substantially porosity free, fine-grained and/or amorphous Co-bearing metallic materials optionally containing solid particulates dispersed therein, are disclosed. The electrodeposited metallic layers and/or patches comprising Co provide, enhance or restore strength, wear and/or lubricity of substrates without reducing the fatigue performance compared to either uncoated or equivalent thickness chromium coated substrate. The fine-grained and/or amorphous metallic coatings comprising Co are particularly suited for articles exposed to thermal cycling, fatigue and other stresses and/or in applications requiring anti-microbial properties.

Abstract: An optical disc having at least two metal-containing layers with different compositions and partially overlapping areal extents in the plane of the disc and method of forming the disc are described. The optical disc with dual metallization exhibits visually distinct regions suitable for use for identification purposes.

Abstract: A method for preparing a protective layer (38) on a surface of the substrate (36) that requires a bonding temperature (BT) above a detrimental phase transformation temperature range (28) of the substrate, and then cooling the layer and substrate without cracking the layer or detrimentally transforming the substrate. The protective layer (38) and the substrate (36) are cooled from the bonding temperature (BT) to a temperature (46) above the detrimental phase transformation range (28) at a first cooling rate (30) slow enough to avoid cracking the protective layer. Next, the protective layer and the substrate are cooled to a temperature below the detrimental phase transformation range of the substrate at a second cooling rate (27) fast enough to pass the detrimental phase transformation range before a substantial transformation of the substrate into the detrimental phase can occur.

Abstract: The exemplary embodiments relate to a multilayer aluminum alloy sheet material suitable for fabrication into coolant-conveying tubes, headers and the like used for heat exchangers, and to the tubes and headers, etc., fabricated from the sheet. The multi-layer metal sheet has a core layer of aluminum alloy having first and second sides. The first side has an interlayer made of a Zn-containing aluminum alloy positioned between a Zn-containing outer layer and the core layer. The alloy of the outer layer is more electronegative than the alloy of the interlayer. The alloy of the interlayer is preferably more electronegative than the alloy of the core layer. The first side clad in this way is the side intended for exposure to the coolant, and provides good resistance to corrosion and erosion.

Abstract: The invention relates to a component having a substrate and a protective layer, which consists of an intermediate NiCoCrAlY layer zone on or near the substrate and an outer layer zone which is arranged on the intermediate NiCoCrAlY layer zone, which is characterized in that the intermediate NiCoCrAlY layer zone comprises of (in wt %): 24-26% Co, 16-18% Cr, 9.5-11% Al, 0.3-0.5 Y, 1-1.8% Re and Ni balance.

Abstract: A substrate processing chamber component is capable of being exposed to an energized gas in a process chamber. The component has an underlying structure and first and second coating layers, the first coating layer comprising a first material having a first thermal expansion coefficient and a first surface having an average surface roughness of less than about 25 micrometers. The second coating layer is over the first surface of the first coating layer, the second coating layer comprising a second material having a second thermal expansion coefficient that differs by less than 5% from the first thermal expansion coefficient of the first material and a second surface having an average surface roughness of at least about 50 micrometers.

Abstract: The present invention provides a precoated metal sheet excellent in the coating material adhesion and having little affect on environment. The precoated metal sheet of the invention is a precoated metal sheet comprising a metal or plated metal sheet having stacked on the surface thereof at least a coat layer and an organic resin layer, the metal or plated metal sheet mainly comprising zinc and aluminum and the coat layer mainly comprising one or both of a metal oxide and a metal hydroxide each using a metal species exclusive of chromium.

Abstract: A component having a corrosion-resistant and/or oxidation-resistant coating is provided that includes at least one platinum-aluminum substrate area is provided, the component having a substrate surface (11) and a substrate composition based on nickel, with a platinum-aluminum substrate area (12) formed in the area of the substrate surface of the component by precipitating platinum (Pt) and aluminum (Al) on the substrate surface. The platinum-aluminum substrate area (12) has a two-phase structure or duplex structure with finely dispersed platinum-aluminum deposits in a nickel-based mixed crystal in an outer zone (13), and a single-phase structure made of a nickel-based mixed crystal in an inner zone (14) located between the substrate surface (11) of the component and the outer zone (13).

Abstract: A metal clad laminate and a method of manufacturing the metal clad laminate are disclosed. The metal clad laminate can include a barrier layer made of a metallic material, a metal foil formed on one side of the barrier layer and coupled with the barrier layer by plating, and an insulator attached to the metal foil. By utilizing the metal clad laminate, the metal foil can be prevented from being perforated when processing a via hole using laser, so that a VOP structure may be implemented with a higher level of reliability.

Abstract: Disclosed is a multilayer alloy coating film capable of maintaining heat resistance, high-temperature oxidation resistance and creep resistance for a long time even in an ultra high temperature environment. The multilayer alloy coating film comprises a barrier layer formed on a base surface, and an aluminum reservoir layer formed on the barrier layer and composed of an alloy containing Al. The barrier layer comprises an inner sacrificial barrier layer composed of an alloy containing Re, an inner stabilization layer formed on the inner sacrificial barrier layer, a diffusion barrier layer formed on the inner stabilization layer and composed of an alloy containing Re, an outer stabilization layer formed on the diffusion barrier layer, and an outer sacrificial barrier layer formed on the outer stabilization layer and composed of an alloy containing Re.

Abstract: The invention relates to the use of lead-free sliding layers in the laminated composite materials for slide bearings or bushes. According to the invention, the laminated composite material comprises a support layer, an antifriction layer (3) produced from a copper alloy or an aluminum alloy, an intermediate nickel layer (2) having a thickness >4 ?m and a sliding layer (1) consisting of approximately 0 to 20% by weight of copper and/or silver and the remainder tin. The sliding layer is electrodeposited from a methlysulfonic acid electrolyte.

Abstract: The present invention relates to a chemical nickel bath containing precious metal ions, a process for preparing a chemically deposited nickel coat containing a precious metal, the thus produced nickel coat, and the use thereof.

Abstract: A coating process and system for an article having a substrate formed of a metal alloy that is prone to the formation of a secondary reaction zone (SRZ). The coating system includes an aluminum-containing overlay coating and a stabilizing layer between the overlay coating and the substrate. The overlay coating contains aluminum in an amount greater by atomic percent than the metal alloy of the substrate, such that there is a tendency for aluminum to diffuse from the overlay coating into the substrate. The stabilizing layer is predominantly or entirely formed of at least one platinum group metal (PGM), namely, platinum, rhodium, iridium, and/or palladium. The stabilizing layer is sufficient to inhibit diffusion of aluminum from the overlay coating into the substrate so that the substrate remains essentially free of an SRZ that would be deleterious to the mechanical properties of the alloy.

Abstract: A coated article is prepared by furnishing a nickel-base article substrate having a free sulfur content of more than 0 but less than about 1 part per million by weight. A protective layer is formed at a surface of the article substrate. The protective layer includes a platinum aluminide diffusion coating. The protective layer may be substantially yttrium-free, or have a controlled amount of yttrium. A ceramic layer may overlie the protective layer.

Abstract: A component having a platinum-aluminum substrate surface region which is formed in the area of the substrate surface of the component by diffusion of platinum and aluminum into the substrate surface and which contains platinum and aluminum as well as the constituents of the substrate composition. The integrated aluminum content and/or the integrated platinum content in the substrate area is less than 18 wt %.

Abstract: A brazing product for low temperature fluxless brazing comprises a filler metal-forming composition which melts in the range from about 380-575° C. The filler metal-forming composition comprises zinc optionally in combination with aluminum and/or silicon, and further comprises at least one braze promoter selected from nickel, cobalt, iron and palladium. The filler metal-forming composition may comprise a single layer or may comprise a number of distinct layers. The brazing product may take the form of a brazing preform or a brazing sheet or casting in which the filler metal-forming composition is deposited on a non-consumable substrate. The substrate may preferably comprise aluminum or an aluminum alloy, but may instead be comprised of one or more metals other than aluminum.

Abstract: A component having a platinum-aluminum substrate surface region which is formed in the area of the substrate surface of the component by diffusion of platinum and aluminum into the substrate surface and which contains platinum and aluminum as well as the constituents of the substrate composition. The integrated aluminum content and/or the integrated platinum content in the substrate area is less than 18 wt %.

Abstract: A layer sequence (400), comprising an aluminium layer (300), a nickel layer (301), and a nickel layer protection layer (302; 701). The aluminium layer (300) is formable on a substrate (200), the nickel layer (301) is formed on the aluminium layer (300), and the nickel layer protection layer (302; 701) is formed on the nickel layer (301).

Abstract: Metallic substrates have a surface for receiving application of an adhesive that includes a precipitated coating of metallic nanoparticulates. A first portion of the nanoparticulates is adhered to the surface and a second portion is in contact with the first portion. Also provided are adhered constructs. These constructs include a first substrate with a first surface that has a metallic precipitated coating of nanoparticulates. A first portion of the nanoparticulates is adhered to the surface and a second portion contacts the first portion. The constructs include a second substrate that has a second surface; and an adhesive is applied between the first surface and the second surface.

Abstract: A coating process and system suitable for use on components subjected to high temperatures. The coating system includes an overlay coating of predominantly B2 phase rhodium aluminide (RhAl) intermetallic compound containing about 25 to about 90 atomic percent rhodium, about 10 to about 60 atomic percent aluminum, optionally up to a combined total of about 25 atomic percent of one or more platinum group metals chosen from the group consisting of platinum, palladium, ruthenium, and iridium, and up to about 20 atomic percent of the base metal and alloying constituents of the substrate. The RhAl intermetallic coating may serve as an environmental coating, a diffusion barrier layer for an overlying environmental coating, or both, with or without an outer ceramic coating.

Abstract: The invention is a laminate made of very thin copper sheet preferably between 0.0005 and 0.01 inches thick, aluminum sheet preferably between 0.004 and 0.04 inches thick, and adhesive between the copper and aluminum sheets. The cost of the aluminum, adhesive, and the manufacturing process combined are much less expensive than solid copper sheet of 0.020 inches in thickness. However, when the copper sheet of the laminate is on the outside, the aesthetic qualities are indistinguishable from heavyweight solid copper sheet.

Abstract: When an aluminum plate is bonded directly to a ceramic substrate by cooling and solidifying molten aluminum which is injected into a mold so as to contact the ceramic substrate arranged in the mold, an additive, such as a TiB alloy, Ca or Sr, for decreasing the grain size of the aluminum plate to 10 mm or less while preventing the drop in thermal conductivity of the aluminum plate from the thermal conductivity of a pure aluminum plate from exceeding 20% of the thermal conductivity of the pure aluminum plate is added to the molten aluminum. When an aluminum alloy plate of an aluminum-silicon alloy is bonded directly to a ceramic substrate by cooling and solidifying a molten aluminum-silicon alloy which is injected into a mold so as to contact the ceramic substrate arranged in the mold, an aluminum-silicon alloy containing 0.1 to 1.5 wt % of silicon and 0.03 to 0.10 wt % of boron is injected into the mold.

Abstract: The disclosed subject matter relates to a metal multi-layered film structure that includes two types of metal films including first metal films and second metal films alternately formed on a resin substrate. The first metal films can be composed of an aluminum-based material having a film thickness between 0.7 nm and 20 nm. The second metal films can be composed of a metal selected from the group consisting of stainless steel-based materials, nickel-based materials, cobalt-based materials, titanium-based materials and chromium-based materials, having a film thickness ranging from 1 nm to 20 nm. This metal multi-layered film structure can be manufactured through a method of sputtering. The metal multi-layered film structure is suitable for an extension reflector for vehicular lamps.

Abstract: A gas turbine part comprises a superalloy metal substrate, a bonding underlayer formed on the substrate and comprising an intermetallic compound of aluminum, nickel, and platinum, and a ceramic outer layer anchored on the alumina film formed on the bonding underlayer. The bonding underlayer essentially comprises an Ni—Pt—Al ternary system constituted by an aluminum-enriched ?-NiPt type structure, in particular an Ni—Pt—Al ternary system having a composition NizPtyAlx in which z, y, and x are such that 0.05?z?0.40, 0.30?y?0.60, and 0.15?x?0.40.

Abstract: The invention relates to a brazing sheet product comprising a core sheet, a clad layer on said core sheet made of an aluminum alloy containing silicon in an amount in the range of 4 to 14% by weight, an optional layer comprising nickel on the outersurface of said clad layer, and a diffusion layer comprising nickel-tin alloy on the outer surface of said nickel layer. The invention further relates to a method of manufacturing such a brazing product comprising the process step of plating different metal layers and subjecting the plated brazing product to an annealing treatment by holding the plated brazing product at a temperature in the range of 100 to 500° C. for a period of 1 sec. to 300 minutes to form a diffusion layer comprising nickel-tin alloy on the outer surface of said layer comprising nickel.