Abstract: Disclosed is a coated steel sheet valuable for the production of a fuel vessel, in which a first covering layer comprising a Pb-Sn alloy as the main component is formed on a substrate comprising a steel sheet and an undercoat covering layer composed of at least one member selected from Ni, Co and Cu, which is formed on the surface of the steel sheet according to need, a second covering layer containing a compound containing Pb and P is formed on the first covering layer, a third covering layer containing at least one member selected from Sn, Ni and Co is formed on the second covering layer, and according to need, the surface portion of the third covering layer is modified with a treating liquid containing a phosphoric acid ion or a chromic acid ion. This coated steel sheet shows a highly improved corrosion resistance, forming processability, solderability, and weldability.

Abstract: A hot-dip aluminium coated steel sheet having excellent corrosion resistance and heat resistance, comprising a steel substrate containing 3 to 18% chromium, not more than 0.02% carbon, 0.1 to 1.5% manganese, 0.005 to 0.08% aluminium, not more than 0.1% silicon, with the balance being iron and unavoidable impurities, and aluminium coating on said sheet substrate. The coated sheet may further comprises a coating layer of nickel or nickel-iron alloy (Ni: 1 to 99%) beneath the aluminium coating, or an Al-Fe-Si-Ni-Cr alloy coating layer of 1 to 10.mu. in thickness and containing 0.05 to 5% nickel, 0.2 to 10% chromium, beneath the aluminium coating.

Abstract: The present invention relates to a highly corrosion resistant surface-treated steel plate. The steel plate of the invention comprises a zinc deposition or zinc alloy deposition film as the undercoat deposition layer, a chromate film formed on the undercoat deposition layer and a film of a resin composition formed on the chromate film. This resin composition comprises a substrate resin formed by adding at least one basic nitogen atom and at least two primary hydrogen groups to terminal of an epoxy resin, silica and sparingly water soluble Cr compound. The resin composition may comprise a polyisocyanate compound as the curing agent. Moreover, the resin composition may comprise a silane compound as the crosslinking agent for the substrate resin and silica.

Abstract: The suitability of the kind of steel strip known as black plate, optionally coated with small quantities of tin or nickel for food packaging, is greating improved by ensuring the presence of a layer of P-type semiconducting oxide on the surface thereof.The quality of the plate is yet further improved by coating the oxide surface with a thin chromic passivation layer that also contains a P-type semiconducting oxide.

Abstract: In the electroplated steel sheets for automobile use, the chipping resistance, water-resistant adhesion, unpainted corrosion resistance, post-painted corrosion resistance, and resistance to secular exposure are improved by superimposing a chemical conversion layer between electroplated layers of zinc and iron, nickel, cobalt, or alloys thereof.

Abstract: A titanium-clad steel and a method for its manufacture are disclosed. The titanium-clad steel comprises a steel base metal, a nickel insert which is bonded to the steel base metal, a low-carbon ferrous metal insert which contains at most 0.01 weight % of carbon and which is bonded to the nickel insert, and cladding of a titanium-based metal which is bonded to the low-carbon ferrous metal insert. A manufacturing method therefor comprises preparing a 4-layer clad assembly comprising the above materials, sealing the outer seams of the clad assembly by shielded arc welding, performing degassing treatment on at least the confronting surfaces of the inserts, heating the clad assembly to a temperature of 500.degree.-1050.degree. C., and performing hot rolling. The resulting titanium-clad steel has a high bonding strength.

Abstract: A corrosion resistant article comprising a refractory metal having a sulfide coating of said refractory metal formed thereon and a method for producing the same by forming on a refractory metal substrate a sulfide coating of said refractory metal. The corrosion resistant article may be provided in a composite comprising also a metal substrate.

Abstract: A steel wear pin or shaft product utilizes three separate alloys each having opposing metallurgical properties in a core and outer layers which form a structure optimizing the desired properties of each alloy, thus providing a superior product with a substantially improved service life.

Abstract: A Zn-Al hot dip galvanized steel sheet having an improved resistance to secular peeling of a galvanized layer, characterized by a composition of the layer and galvanizing bath which consist of from more than 0.3 wt % to 10 wt % of Al, from 0.2 to 1.0 wt % of Sb, a total of less than 0.02 wt % of impurities including Pb and Sn, and a balance of Zn.

Abstract: The present invention relates to a highly corrosion-resistant surface-treated steel plate. The steel plate of the present invention comprises a zinc deposition or zinc alloy deposition film as the undercoat deposition layer, a chromate film formed on the undercoat deposition layer and a film of a resin composition formed on the chromate film. This resin composition comprises a base resin formed by adding at least one basic nitrogen atom and at least two primary hydroxyl groups to terminals of an epoxy resin. The resin composition may comprise a polyisocyanate compound as the curing agent. Furthermore, the resin composition may comprise silica or a hardly soluble chromium compound as the additive for improving the corrosion resistance. Moreover, the resin composition may comprise a silane compound as the crosslinking agent for the base resin and silica.

Abstract: Thermal protective shield to be used in connection with hot gases in engines, particularly for the combustion of solid, liquid or gaseous fuels or in e.g. Stirling engines driven by solar energy. The thermal protective shield consists of a multi-layer material, wherein at least two layers are joined to each other over a surface corresponding to the entire surface exposed to the hot gases, and wherein the outer layer facing the hot gas consits of an alloy of the type iron-chrome-aluminium. Preferably, the layers are joined together by hot-rolling.

Abstract: There is disclosed a process for forming a wear-resistant, sintered layer on a metallic substrate. The process comprises steps of adhesively attaching to a surface of metallic substrate an alloy particle sheet containing 94 to 99 weight % of ternary eutectic alloy particles and 6 to 1 weight % of acryl binder, heating in a non-oxidating atmosphere to a temperature of 150.degree. to 380.degree. C. and holding at the temperature for at least 5 minutes, and heating a sintering temperature of the alloy particles.

Abstract: A hard faced article comprising an iron or steel substrate having on the surface thereof a weld deposit composed of a solidified iron or steel matrix containing a hard facing material comprising chemically combined vanadium and carbon having tungsten composition wherein said chemically combined vanadium and carbon with tungsten composition consist essentially of a solid solution of vanadium, tungsten and carbon composition and is substantially uniformly distributed throughout said solidified iron or steel matrix, said composition consisting essentially of at least one vanadium carbide with tungsten in solid solution with each vanadium carbide in an amount from about 10% by weight up to solid solubility limit of tungsten in each vanadium carbide.

Abstract: A rubber adherable ferrous substrate for use in reinforcing vulcanizable elastomeric products includes a cold worked steel wire having a brass alloy coating of specified compact structure on its surface. There is provided also a process for covering a steel wire substrate with a compact alloy coating, in particular a thin brass diffusion coating having a specified permeability.

Abstract: An iron-zinc alloy electro-galvanized steel sheet having a plurality of iron-zinc alloy coatings, which comprises: at least one iron-zinc alloy coating as the lower layer, formed on the surface of a steel sheet, and at least two iron-zinc alloy coatings as the upper layer, formed on the at least one iron-zinc alloy coating as the lower layer. The ratio of iron content to the coating weight of each of the at least one iron-zinc alloy coating as the lower layer is within the range of from 1 to 15 wt. %, and the total coating weight of the at least one iron-zinc alloy coating as the lower layer is within the range of from 1 to 50 g/m.sup.2 per side of the steel sheet. The ratio of iron content to the coating weight of each of the at least two iron-zinc alloy coatings as the upper layer is over 15 wt.

Abstract: An oxide thermal barrier coating comprises ZrO.sub.3 --Yb.sub.2 O.sub.3 that is plasma sprayed onto a previously applied bond coating. The zirconia is partially stabilized with about 12.4 w/o ytterbia to insure cubic, monoclinic, and tetragonal phases.

Abstract: A composite structure of thin films including alternating layers of relatively high conductivity metals and low conductivity metals to combine the effects of reflection and absorption and thereby maximize the attenuation of the structure. Additionally, a similar structure of layers of materials with differing magnetic permeabilities may be used for the same purpose.

Abstract: A process for electrodeposition of a material on a substrate that includes the steps of establishing a liquid halogenous electrolyte containing the material to be plated on the substrate and a solute, said electrolyte having an appropriate electrical conductance in a cryogenic environment; and establishing an electric field within the electrolyte to effect migration of ions of said material to the substrate where they deposit.

Abstract: A ferrous metal body having a diffusion bonded coating which is corrosion resistant and free of any significant polarization, the bulk of said coating being comprised an alloy of at least about 70% by weight molybdenum, up to about 5% by weight iron balance chromium, the outside surface or surface portion of said coating being comprised of an alloy of at least about 30% by weight chromium, up to about 1% by weight iron, balance molybdenum, said outside surface or outside surface portion of said coating being significantly richer in chromium than said bulk portion, and a diffusion bonding layer comprised of MoCrFe alloy extending from said bulk portion into the surface of said ferrous body, said diffusion bonding layer being comprised of at least about 10% by weight molybdenum, at least about 5% by weight chromium and at least about 10% by weight iron.

Abstract: Hardfacing of metal parts employing a thin, homogeneous ductile foil is disclosed. The hardfacing foil has a composition consisting essentially of about 0 to about 25 atom percent cobalt, 0 to about 30 atom percent nickel, 0 to about 30 atom percent chromium, 0 to about 5 atom percent tungsten, 0 to about 4 atom percent molybdenum, about 2 to about 25 atom percent boron, 0 to about 15 atom percent silicon, and 0 to about 5 atom percent carbon, the balance being iron and incidental impurities with the proviso that the total or iron, cobalt, nickel, chromium, tungsten and molybdenum ranges from about 70 to 88 atom percent and the total of boron, silicon and carbon ranges from about 12 to 30 atom percent. The ductile foil permits continuous hardfacing of soft matrix, like low carbon and low alloy steels, imparting superior resistance to wear and corrosion.

Abstract: Disclosed is a novel three-layered metallic interlayer material which provides good diffusion bonding between titanium alloys and steel or between titanium alloys and nickel alloys. The interlayer is comprised of three separate layers of metals as follows: a nickel layer which is placed in contact with the steel or nickel alloys, a Group V-B metal layer which is placed in contact with the titanium alloy and a copper layer which is sandwiched between the nickel and the Group V-B metal layers.

Abstract: The object of the invention is to improve the performance of the rolls of roughing and finishing stands of a hot strip train or mill and in particular to retard as far as possible the banding phenomenon, namely the phenomenon of the incrusting of hard oxides or scale formed at the conventional rolling temperatures.For this purpose, the roll is made, at least in the working region thereof, from a chrome steel in which the ratio between the respective contents of chromium and carbon is between 7 and 12 and in which the content of equivalent carbon is between 1.5 and 1.7%. This content of equivalent carbon is calculated as the sum of the content of carbon and the content of chromium, the latter being given a coefficient 0.05.

Abstract: A steam turbine rotor shaft comprising the main body of the rotor shaft made of a high Cr steel of martensite structure, and a journal having a plurality of built-up welding layers formed successively said main body, the outer surface portion of the journal being made of steel containing 0.5 to 3 wt % of Cr, and a method of producing same.

Abstract: A welded structural member adapted to be subjected to a flowing fluid and comprising a base member consisting mainly of iron and a coating layer formed by a build-up welding on the surface of the base member, the coating layer having a higher erosion resistance than the base member. The coating layer contains 0.03 to 0.4 wt % of C, 0.1 to 1 wt % of Si, 0.5 to 20 wt % of Mn, 1 to 5.5 wt %, of Ni, 1 to 12 wt % of Co, 8 to 23 wt % of Cr and the balance Fe. The structure of the coating layer is mainly unstable austenite.

Abstract: A steel sheet with two or more coatings and a method of producing the same are disclosed. The steel sheet has on at least one side a discontinuous surface layer of an Fe or Fe--Zn base alloy, preferably an Fe--Zn base alloy electrodeposit containing Sn in an amount of 0.01 to 50 mg/m.sup.2, usually in an amount of 1.0 to 50 mg/m.sup.2, preferably in an amount of 3.0 to 30 mg/m.sup.2, and also 5 to 50% by weight of Zn in case Fe--Zn alloy is used, and a layer of Zn--Ni or Zn--Fe alloy electrodeposit, which lies directly under said discontinuous surface layer.

Abstract: This invention relates to a high temperature oxidation resistant thermal barrier coating system for a nickel-, cobalt-, or iron-base alloy substrate. An inner metal bond coating contacts the substrate, and a thermal barrier coating covers the bond coating.NiCrAlR, FeCrAlR, and CoCrAlR alloys have been satisfactory as bond coating compositions where R=Y or Yb. These alloys contain, by weight, 24.9-36.7% chromium, 5.4-18.5% aluminum, and 0.05 to 1.55% yttrium or 0.05 to 0.53% ytterbium. The coatings containing ytterbium are preferred over those containing yttrium.An outer thermal barrier coating of partially stabilized zirconium oxide (zirconia) which is between 6% and 8%, by weight, of yttrium oxide (yttria) covers the bond coating. Partial stabilization provides a material with superior durability. Partially stabilized zirconia consists of mixtures of cubic, tetragonal, and monoclinic phases.

Abstract: A roll of which surface cracks are hardly caused under the condition of repetitive heating and cooling. A roll comprises that the alloy consisting of no more than 0.10 percent by weight of carbon, 10.about.14 percent by weight of chromium, 0.1.about.1.0 percent by weight of molybdenum, 0.5.about.2.0 percent by weight of cobalt and essentially balanced iron is coated on the surface of a roll body consisting of low alloy or carbon steel by build-up welding.Therefore, build-up welding layer of the above-mentioned compositions excel in view of resistance to corrosion, and that fact is related with a long-life of a roll.

Abstract: A metal laminate possessing high strength characteristics as well as good ductility and malleability, comprising one or more layers of a superplastic material metallurgically bonded to one or more layers of a non-super plastic material; and the method of preparing the laminate to induce plastic or super plastic characteristics to the nonsuper plastic material.

Abstract: A wear and corrosion resistant alloy for lining cylinders used in extrusion and injection molding machines comprises at least two carbides admixed with a nickel-cobalt base alloy. The cylinder lining is preferably prepared by placing a quantity of the alloy in the cylinder and capping the ends of the cylinder. The cylinder is then heated above the melting point of the alloy and spun at a high rate of speed to centrifugally coat the inner surface of the cylinder. The cylinder's end caps are then removed and the lining finished to the correct internal diameter and finish by conventional lathe and hone means. The carbide mixture is evenly dispersed in the lining and produces a lining having desirable hardness and corrosion resistance throughout the thickness of the lining.

Abstract: An article of improved wear characteristics and composed of a relatively low wear resistant base metal coated by a particulate refractory metal having a melting point of at least 1490.degree. C. deposited within the near-surface region thereof comprising a base metal or alloy of relatively low wear resistance, a refractory metal deposited within said near-surface region, said refractory metal being selectively deposited in the form of discrete particles, and the particles being idiomorphic or blocky or equiaxial or spheroidal or acicular or dendritic and a plurality of these particles having dimensions of less than 10 micrometers, a plurality of the particles being contiguous to form clusters of the particles that are spaced from each other. The clusters of particles may form microscopic regions of refractory metal which in turn may produce macroscopic regions of refractory metal having the appearance of a continuous coating.

Abstract: A multi-layer composite brazing alloy useful in mine drills for attaching hardened bits, such as tungsten carbide, to bit holders made of steel and the like, comprises two outer layers of a brazing alloy bonded to an inner layer or core of iron or nickel. While a wide variety of brazing alloys are useful as the outer layers, a cost preferred alloy is AMS-4764 (in percent by weight 9.5 Ni - 52.5 Cu - 38.0 Mn) having a melting range of 880.degree.-925.degree. C. This is approximately 40% less than the melting temperature of the iron or nickel core which, therefore, is not susceptible to melting and alloying with the outer layers when the brazing furnace temperature fluctuates during the brazing operation. On cooling, the ductile iron or nickel core absorbs stresses due to dissimilar thermal expansion coefficients of the carbide tip and the holder and prevents cracking of the joint.

Abstract: The surface-coated blade member for cutting tools comprises a metal substrate and a coating on at least one surface of said substrate, said coating composed of a layer of vapor deposited titanium on the surface of said metal substrate and at least one layer of vapor deposited titanium compound on said layer of titanium, and said layer of titanium compound being selected from the group consisting of titanium carbide, titanium nitride, titanium carbonitride, titanium oxy-carbide and titanium oxy-carbo-nitride, said layer of titanium being no larger than 2 .mu.m thick and said layer of titanium compound being 0.5 to 10 .mu.m thick. A process for producing such a blade member is also disclosed.

Abstract: Manganese coated steel materials having a compact film of hydrated manganese oxide formed on the manganese coating by heating and drying. Manganese coated steel materials of the present invention show very excellent corrosion resistance in ordinary corrosive environments as well as special corrosive environments such as marine environments and young plant cultivation in mountaineous forests. For further improvement of corrosion resistance, organic coating and metal coatings are applied.

Abstract: A nuclear fuel element comprising a fuel body formed of nuclear fuel material and a clad for covering the fuel body. The clad is formed of an austenitic stainless steel containing silicon, titanium and carbon, respectively, in a controlled quantity.

Abstract: A bearing metal for large size engines having excellent compatibility and as well as embeddability even when used under a poorly lubricated condition. Such bearing metal consists of three or four layers, including a layer of a bearing alloy which contains more than 50% and up to 65% by weight of tin, with the remainder being made up of aluminum, and which may also include less than 0.5% by weight of copper. This bearing alloy has a hardness at high temperature exceeding 100.degree. C. lying between that of aluminum-tin bearing alloys which contain up to 50% by weight of tin and that of tin base or lead base white metal bearing alloys.

Abstract: This invention relates to a clad steel in which an extremely low carbon steel used as a base metal is bonded together with an austenite stainless steel, nickel or nickel alloy as a cladding metal by a rolling or an explosive process, and more particularly to a clad steel having superior properties in which Ti and/or Zr are added to the base metal in order to fix carbon contained therein.

Abstract: A composite metallic article for effecting a seal with glass, said article comprising a nickel-iron alloy core portion, a low carbon steel alloy sheath portion bonded to the core, and a uniformly thick shell portion of a glass-wetting material bonded about the sheath. A method for making the article is also disclosed.

Abstract: A weld metal deposit which is not subject to solidification cracks and which is highly wear-resistant, also to the hot wear to which hot forming tools are subjected is disclosed. The weld metal deposit consists essentially of an air-hardening alloy steel containing 0.55% to 2.0% carbon, 0.2% to 4.0% silicon, 0.2% to 3.0% manganese, 4.0% to 6.5% chromium, 2.5% to 15.0% columbium, 0% to 3.5% strong carbide formers other than columbium, 0% to 0.5% nickel, and the remainder iron with or without incidental impurities. The contents of carbon and columbium have to be in a ratio of one to another as defined by the area indicated in FIG. 1 of the accompanying drawings.

Abstract: The composition and structure of aluminum bearing overlay alloy coatings, such as MCrAlY type overlay coatings, are altered during deposition from a metallic vapor by biasing the substrate at a small negative potential relative to ground while the vapor is at least partially ionized. The coating layer deposited under such conditions is characterized by substantial freedom from leader defects and by a reduced aluminum content and resultant improved ductility. Such coating conditions can be incorporated in a preselected manner into conventional deposition techniques, such as vacuum vapor deposition and sputtering, to produce a variety of coating compositional and structural variations from a single coating alloy ingot source.

Abstract: A composite metallic article for effecting a seal with glass, said article comprising a nickel-iron alloy core portion, a low carbon steel alloy sheath portion bonded to the core, and a uniformly thick shell portion of a glass-wetting material bonded about the sheath. A method for making the article is also disclosed.

Abstract: A drier roll having a ferrous metal surface is provided with a surface coating of a hardfacing alloy, the ferrous metal surface having a thermal conductivity relative to silver taken as 1 cal/cm.sup.2 /cm/.degree. C/sec of at least about 0.06, the hardfacing alloy being a hardfacing heat, corrosion and wear resistant iron-group metal-base alloy mechanically and metallurgically bonded to said ferrous metal surface which is preferably made of cast iron, the hardfacing alloy coating having a thickness ranging from about 0.01 to 0.15 inch, the thermal conductivity of said coating being at least 0.05.

Abstract: Composite calcium materials to be used for welding or refining steel, nickel, nickel alloy or iron alloy, which are produced by cladding a sheath of aluminum, iron or alloys thereof and a core consisting of1. a mixture or an alloy of calcium or an alloy thereof with at least one element of aluminum and rare earth metals,2. a mixture of calcium or an alloy thereof with a flux of silicates, oxides or halides of alkaline earth metals, or3. a mixture consisting of the above described mixture or alloy (1) with the flux as described in the above item (2).

Abstract: Cold reduced, annealed steel strip and sheet stock having 0.2% yield strength of 45 to 65 ksi with an elongation of at least 25%, or having a yield strength of at least 90 ksi with an elongation of at least 10%. A low carbon steel (0.02-0.10% C) typical of rimmed or drawing steel analysis is preferably vacuum degassed, and 0.02% to 0.18% columbium is added. The casting is hot rolled, coiled not higher than 1300.degree. F., cold reduced 40% to 70%, and annealed at low temperature for a time sufficient to restore desired ductility without substantially decreasing yield strength.