Abstract: Structural components of nickel-containing alloys within molten alkali metal systems are protected against corrosion during the course of service by dissolving therein sufficient aluminum, silicon, or manganese to cause the formation and maintenance of a corrosion-resistant intermetallic reaction layer created by the interaction of the molten metal, selected metal, and alloy.

Abstract: A method is presented for preparing a boride layer on a transition metal substrate for use in corrosive environments or as a harden surface in machine applications. This method is particularly useful in treating current collectors for use within a high temperature and corrosive electrochemical cell environment. A melt of a alkali metal boride tetrafluoride salt including such as KF to lower its melting point is prepared including a dissolved boron containing material, for instance NiB, MnB.sub.2, or CrB.sub.2. A transition metal to be coated is immersed in the melt at a temperature of no more than 700.degree. C. and a surface boride layer of that transition metal is formed within a period of about 24 hours on the substrate surface.

Abstract: The invention relates to a method for producing coated high strength low alloy steel. A strip of steel is cleaned from rolling oil, is heated to the temperature range A.sub.1 to A.sub.3 in a protective atmosphere, is soaked and subsequently quenched in a zinc-aluminum bath for a short time sufficient to adhere a zinc coating to the steel surface, whereafter the steel strip is rapidly cooled to a temperature below 300.degree. C., to obtain a dual-phase steel structure.

Abstract: To increase the corrosion resistance of nitrided structural parts made of iron materials which are useful for all types of iron and steel there is carried out an oxidation treatment in connection with the nitriding process. The oxidation treatment is carried out for 15 to 50 minutes in an oxidizing salt bath. The salt bath preferably consists of alkali hydroxides with 2 to 20% of alkali nitrates.

Abstract: A solar collector plate made of stainless steel or a metal having a nickel-flash coating is immersed in a molten dichromate salt bath at a temperature between about 375.degree. C. and about 500.degree. C. sufficiently long to provide a selective oxide coating which has a Figure of Merit of at least about 4. The oxide coating is continuous, has a microscopically nodular texture with the average nodule size being at least about 5000 A and displays a Figure of Merit of at least about 4.

Abstract: A method for forming a two-layered carbide surface on a ferrous-alloy article containing at least 0.2 percent by weight of carbon. The formation of such a surface is effected by plating the ferrous alloy article with chromium, to form a chromium layer thereon, and heating the thus-plated article in contact with an element of Group Va and/or chromium (a) to diffuse carbon from the ferrous-alloy article into the chromium layer and convert the chromium layer to an intermediate chromium-carbide layer and (b) thereafter to combine carbon in the intermediate chromium-carbide layer with the element (of Group Va or chromium) and thus form a Group-Va-element-carbide layer and/or another chromium-carbide layer on the intermediate chromium-carbide layer.

Abstract: Cast iron is pretreated in an aqueous solution of nitric acid and then immersed in molten sulfur until a sulfurized layer is formed on its surface. The sulfurized layer is very thick and stable and has excellent molten aluminum resistance. Its uniformity is further improved by a subsequent diffusion treatment at elevated temperatures.

Abstract: A method and treating material are presented for forming a mixed-carbide layer of at least one Va-Group element and of chromium on the surface of a carbon-containing ferrous-alloy material. A molten treating bath is prepared by introducing one or more Va-Group elements in oxide form and chromium in metal or alloy form or by introducing one or more Va-Group elements in metal or alloy form and at least one chromium oxide into a molten bath composed of boric acid, of at least one borate or of a mixture thereof. An article of carbon-containing ferrous alloy is immersed and maintained in the molten treating bath until a mixed-carbide layer is formed on its surface. The mixed-carbide layer formed on the surface of the article is very smooth, wear resistant and high-temperature-oxidation resistant.

Abstract: A method and treating material are presented for forming a mixed carbide layer of Va-Group elements on the surface of a carbon-containing ferrous-alloy material. The molten bath is made by introducing one or more oxides of Va-Group elements and one or more metals or alloys of Va-Group elements (other than the elements forming the oxides) into a molten bath composed of boric acid, a borate or a mixture thereof. The mixed carbide layer formed on the surface of the article is very smooth, wear resistant and corrosion resistant.

Abstract: Brass coated steel tire cord is treated with solid or molten benzotriazole and/or other treatment agents to promote corrosion resistance and cord to rubber adhesion retention.

Abstract: A method for forming a boron-containing carbide layer on the surface of a ferrous alloy article by dipping the article in a molten bath. The bath is made by introducing boron and an oxide of a Va-Group element or of chromium into molten boric acid or a borate bath. The ratio of the boron to the oxide is between 7% and 40%. The carbide layer formed is very hard and has good oxidation resistance.

Abstract: The surfaces of a ferrous metal body are coated with a heat-fusible, chemically-oxidizing composition, such as sodium nitrate or potassium nitrate. Then, the coated body is heated above the melting temperature of the coating, preferably above 350.degree. C., until the coating melts, spreads over the surfaces, reacts with the material of the surfaces and produces a black oxide coating thereon.

Abstract: Fracture promoting media are comprised of mercury and an alkali metal selected from the group consisting of cesium, lithium, sodium and potassium. A modification of the foregoing media is achieved by the addition of a metallic sulfate solution selected from the group of gold sulfate, silver sulfate and copper sulfate. A method of achieving failure of a material at greatly reduced energy requirements comprises contacting the material at a desired place for failure with a medium of mercury and an alkali metal selected from the group of cesium, lithium, sodium and potassium and applying force to the material. A modification of the foregoing method comprises contacting the material at a desired place for failure with a medium of mercury, an alkali metal selected from the group of cesium, lithium, sodium and potassium and a metallic sulfate solution selected from the group of gold sulfate, silver sulfate and copper sulfate and applying a force to the material.

Abstract: The invention concerns a method for the manufacture of a superconductor with a layer of the A-15 phase of the system Nb-Al-Si. According to the invention, a niobium carrier is provided with a layer about 0.5 to 5 .mu.m thick consisting of Nb.sub.3 (Al,Si), aluminum and silicon by placing it in an aluminum melt which contains up to 10 atomic percent of silicon and a small amount of niobium and is heated to 850.degree. to 1300.degree. C, and then the niobium carrier provided with this layer is annealed in an inert atmosphere for at least 0.5 seconds to form the layer of the A-15 phase.

Abstract: The method consists in preparing a mixture composed of 20-80 g of molybdenum disulphide and 1-5 g of sulphuric acid per liter of glycerine, heating said mixture from 180.degree. to 230.degree. C, holding the workpieces in said mixture for 3-7 hours in presence of brass, followed by washing the parts with a cooling liquid and drying them.

Abstract: A firmly adherent black oxide coating for chromium-containing martensitic and ferritic stainless steel substrates, particularly windshield wiper blade assemblies, consisting essentially of (Fe,Cr).sub.2 O.sub.3 and Fe.sub.3 O.sub.4.