Abstract: The present invention discloses corrosion and wear-resistant claddings comprising hard particles and an alloying addition dispersed in a nickel-based alloy matrix. The alloying addition comprises at least one of molybdenum or copper. The cladding does not include cobalt-bonded tungsten carbide particles.

Abstract: A method of hard-facing a steel casting is described in which a hard-facing, which comprises a weld alloy matrix and a hard particulate substance, is attached to the casting by welding. In some embodiments the matrix can be of a similar composition to the casting, and in other embodiments the hard particulates can be rounded and/or substantially spherical, or of a substantially even size. A method is also described for hardening and tempering a steel casting after attaching the hard-facing to the casting by welding. After hard-facing the casting is hardened and tempered by heat treatment. In one embodiment the hard-faced casting is heat treated by heating to a temperature in excess of the austenitising temperature of the steel and then cooled by quenching in an aqueous solution, followed by tempering. In one embodiment the steel casting is tempered at a temperature in the range about 550° C. to about 700° C. prior to hard-facing the casting.

Abstract: An insert with a light weight per unit length, which is securely separable to obtain insert pieces, a method for producing such an insert, and a method for producing long products using such an insert. The insert includes a large number of insert pieces and joining parts formed by the application of a rolling operation and a tension force, and has a ladder-shaped configuration. Slits are defined between adjacent insert pieces, and include first slits, each having a large width in a longitudinal direction of the insert, and second slits, each having a width smaller than that of the first slits so as to be alternately formed. The joining parts include first joining parts, each having a small width in a width direction of the insert, and second joining parts, each having a width larger than that of the first joining parts so as to be alternately formed.

Abstract: The invention provides a structural member of different materials having no different-material-bonded part between aluminum alloy material and steel material to be assembled. The structural member of different materials comprised of steel and aluminum alloy includes a first structural member including steel, and a second structural member having a part including steel and a part including aluminum alloy, the part including steel and the part including aluminum alloy being bonded by different-material bonding. The first structural member and the second structural member are bonded together only by bonding of steels between the part including steel of the second structural member and the first structural member.

Abstract: A contact material which provides improved wear resistance as well as reduced adhesion utilizing the features of an intermetallic compound having an ordered phase, with the intention of (i) improving the seizure resistance and/or wear resistance of an implement bearing which slides under low-speed, high-surface-pressure conditions and is susceptible to lubricant starvation; (ii) preventing abnormal noises; and (iii) achieving prolonged greasing intervals. The contact material contains 10% by volume or more a metallic alloy phase having such a composition range that causes an order-disorder transition. The metallic alloy phase is a Fe base alloy phase containing one or more elements selected from the group consisting of Al, Si, Co and Ni.

Abstract: A solder layer and an electronic device bonding substrate using the layer are provided which avoid deteriorating qualities of the electronic device to be bonded. In a solder layer 14 free from lead and formed on a substrate 11 or an electronic device bonding substrate 10 having such a solder layer, the solder layer 14 has a specific resistance of not more than 0.4 ?·?m. The electronic device bonding substrate 10 can have a thermal resistance of not more than 0.5 K/W and a thickness of not more than 10 ?m. Then, voids contained in the solder layer 14 have a maximum diameter of not more than 0.5 ?m and the substrate can be a submount substrate.

Abstract: A coated article system includes a substrate and a surface coating on the substrate. The surface coating is formed by depositing individual particles of a composite metal powder with sufficient energy to cause the composite metal powder to bond with the substrate and form the surface coating. The composite metal powder includes a substantially homogeneous dispersion of molybdenum and molybdenum disulfide sub-particles that are fused together to form the individual particles of the composite metal powder.

Abstract: A Ni alloy layer is formed on a surface of a steel base on the side to be in direct contact with a molten aluminum alloy, and titanium carbide (TiC) is bonded in a particulate state to the surface of the Ni alloy layer. This makes it possible to provide a metal material having materially enhanced melting loss resistance without resorting to conventional techniques, such as the provision of a ceramic coating by PVD or CVD.

Abstract: A running-in coating for gas turbines and a method for production of a running-in coating are provided. The running-in coating serves to seal a radial gap between a housing (11) of the gas turbine and the rotating blades (10) themselves, whereby the running-in coating (13) is applied to the housing. The running-in coating is made from a CoNiCrAIY-hBN material. The CoNiCrAIY-hBN material can be applied by thermal spraying, in particular plasma spraying.

Abstract: A steel strip having a metal coating on at least one surface of the strip. The coating includes an aluminum-zinc-silicon alloy containing magnesium and has small spangles. The magnesium concentration is between 1 and 5% by weight.

Abstract: The present invention relates to an apparatus with a structured hard chrome layer electrodeposited onto a work-piece, the structured hard chrome layer being cup-shaped and/or labyrinth-like and/or column-shaped. The structured hard chrome layer can be electrodeposited from an electrolyte onto the work-piece, said electrolyte containing (a) a Cr (VI) compound in an amount corresponding to 50 g/l to 600 g/l of chromic acid anhydride; (b) 0.5 g/l to 10 g/l of sulphuric acid; (c) 1 g/l to 20 g/l of aliphatic sulphonic acid, comprising 1 to 6 carbon atoms; and (d) 10 g/l to 200 g/l of at least one compound forming a dense cathode film, said compound being selected from among ammonium molybdate, alkali molybdate and alkaline earth molybdate, ammonium vanadate, alkali vanadate and alkaline earth vanadate, ammonium zirconate, alkali zirconate and alkaline earth zirconate.

Abstract: The invention relates to a plain bearing composite material with a supporting layer made of a copper alloy, and with a lining applied to the bearing metal layer. The copper alloy can contain 0.5-5% by weight of nickel, 0.2 to 2.5% by weight of silicon and=0.1% by weight of lead. The lining can be a sputtered layer that is applied without an intermediate layer. The invention also relates to methods for producing this composite material.

Abstract: A composite casting for a wear resistant surface, comprising a base composed of a ductile material; and a plurality of wear resistant inserts embedded in said base and composed of a carbide-containing wear resistant alloy which after casting is hot strained by forging or rolling, said inserts being arranged in said base rows so that said inserts of each subsequent one of said rows overlap gaps between said inserts of a preceding one of said rows and (or) said inserts should be positioned with their side bases at a degree (relative to the movement of the abrasive material) of no less than 20°, which would prevent the wear of the ductile base of the composite castings.

Abstract: The invention relates to a mechanical piece having a structure comprising a substrate (1) and at least one surface coating layer (3) of nanometric thickness, for improving mechanical resistance, characterized in that it comprises between the substrate and the surface coating layer an essentially non ceramic, non porous adhesion layer of nanometric size; and said surface coating layer is an essentially non porous barrier layer (2) consisting essentially of an essentially stoechiometric titanium nitride layer.

Abstract: A method of forming a corrosion resistant neutron absorbing coating comprising the steps of spray or deposition or sputtering or welding processing to form a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material. Also a corrosion resistant neutron absorbing coating comprising a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material.

Abstract: An alloy, in particular for an anti-friction coating, includes elements which form a matrix and at least a soft phase and/or a hard phase, which soft phase elements and/or hard phase elements form a solid solution or a bond with the matrix element. The soft phase and/or hard phase is dispersed in the matrix and the solid solution or bond is formed only in the region of the phase boundary of the matrix with the soft phase and/or with the hard phase.

Abstract: The invention relates to a metal matrix ceramic composite (MMCC) wear-parts comprising a wearing portion formed by a ceramic cake and is impregnated by metal. The ceramic cake comprises ceramic grains and carbide grains. The invention also relates to a method for manufacturing the wear-parts. The invention further describes a grinding roll and a table liner for a vertical mill each comprising a metal matrix ceramic composite wear part(s) of the invention.

Abstract: The present invention relates to a copper-based sintered slide member comprising 0.5 to 20% by weight of tin, 0.1 to 35% by weight of manganese, 2 to 25% by weight of a solid lubricant and the balance essentially consisting of copper; and a multilayer copper-based sintered slide member comprising a copper-based alloy sintered layer and a metal backing plate which are formed into an integral multilayer structure, wherein the copper-based alloy sintered layer comprises 0.5 to 20% by weight of tin, 0.1 to 35% by weight of manganese, 2 to 25% by weight of a solid lubricant and the balance essentially consisting of copper. The above slide members are in the form of a lead-free copper-based sintered slide member.

Abstract: Fine-grained (average grain size 1 nm 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-Petch 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: Hot-rolled steel sheet which then can be cold-rolled, coated, the steel in the sheet having the following composition by weight: 0.15%<carbon<0.5% 0.5%<manganese<3% 0.1%<silicon<0.5% 0.01%<chromium<1% titanium<0.2% aluminum<0.1% phosphorus<0.1% sulfur<0.05% 0.0005%<boron<0.08%, the remainder being iron and impurities inherent in processing, the sheet ensuring a very high mechanical resistance after thermal treatment and the aluminum-based coating ensuring a high resistance to corrosion.