Abstract: A ferrite-to-metal bond suitable for the environment of a high-power microwave circulator is disclosed. The bonding surface of a gyromagnetic ferrite or garnet button is metallized by a sputtering process that deposits successive layers of nichrome, copper and gold thereon. During the sputtering process, a flexible stainless steel band surrounds the button to prevent sputtered material from being deposited on other than the bonding surface of the button. The metallized bonding surface is then soldered to a metal wall of the circulator. The bond so formed is capable of withstanding a peak power level in the circulator of 2.0 megawatts and an average power level of 3.5 kilowatts under standing-wave conditions.

Abstract: The soldering alloy comprises at least :65 to 85% lead in weight12 to 30% cadmium in weight1 to 6% antimony in weight0.5 to 1% tin in weight.In a method for soldering metal parts, the parts are submitted to an organic flux on the portions thereof to be connected together, said portions are coated with the above mentioned soldering alloy, then they are heated to the liquidus temperature of the soldering alloy while being held together in contact.

Abstract: This invention concerns composite articles, particularly those which contain single crystal components. A method is disclosed for joining single crystals together so that the resultant article is free from high angle grain boundaries and therefore possesses exceptional mechanical properties.

Abstract: The contact materials comprise silver with additions of mercury or mercury and tellurium and silver-cadmium oxide compositions with additions of mercury and tellurium. The methods of making the materials include the steps of adding a silver-mercury alloy to molten silver and to a molten silver-tellurium powder mixture. The materials including cadmium oxide are produced by heating a mixture of powders of silver, a cadmium-tellurium compound, cadmium oxide, and mercuric oxide powders in a reducing atmosphere and then reoxidizing.

Abstract: A two-component amalgam alloy system comprises as a first component a standard silver-tin amalgam alloy, and as a second component a copper base alloy. The two components are intermixed and amalgamated with mercury to form a dental amalgam from which the highly corrodible tin-mercury (gamma-2) phase has been removed and the readily tarnishable and inter-granular fracturable (brittle) silver-mercury (gamma-1) phase can be reduced.

Abstract: A method of forming a high-temperature abrasion-resistant hard facing or coating on a ferrous metal substrate by employing an aluminothermic reduction reaction. The resultant article has a hard facing layer containing from 2 to 8 percent boron. Hard faced composite articles made by the invented method, such as sintering machine crash decks, coke pusher ram shoes and grizzly bars are also disclosed.

Abstract: Magnetic alloy containing platinum, cobalt and nickel is disclosed which is suitable for use with magnetic recording medium, especially for use with an intermediate magnetic recording medium in thermo and magneto printing.

Abstract: A ferrite-to-metal bond suitable for the environment of a high-power microwave circulator is disclosed. The bonding surface of a gyromagnetic ferrite or garnet button is metallized by a sputtering process that deposits successive layers of nichrome, copper and gold thereon. During the sputtering process, a flexible stainless steel band surrounds the button to prevent sputtered material from being deposited on other than the bonding surface of the button. The metallized bonding surface is then soldered to a metal wall of the circulator. The bond so formed is capable of withstanding a peak power level in the circulator of 2.0 megawatts and an average power level of 3.5 kilowatts under standing-wave conditions.

Abstract: The contact materials comprise silver with additions of mercury or mercury and tellurium and silver-cadmium oxide compositions with additions of mercury and tellurium. The methods of making the materials include the steps of adding a silver-mercury alloy to molten silver and to a molten silver-tellurium powder mixture. The materials including cadmium oxide are produced by heating a mixture of powders of silver, a cadmium-tellurium compound, cadmium oxide, and mercuric oxide powders in a reducing atmosphere and then reoxidizing.

Abstract: A new Si-semi-killed BOF steel, especially suitable for use in the form of bar for concrete reinforcements in which the bar is stitch-welded, contains not less than 0.18% and not more than 0.29% C, not less than 1.20% and not more than 1.50% Mn, less than 0.1% Si, less than 0.01% Al, less than 0.005% N, less than 0.05% P, less than 0.05% S, in total less than 0.15% Cr, Ni, Mo, Cu and Sn, and at least some but less than 0.04% Nb, and possibly also at least some but less than 0.06% V. Cold twisting may further improve the properties of the steel.

Abstract: An article is provided with improved resistance to hot corrosion through a coating on a metal surface based on an element selected from Fe, Co and Ni, the coating comprising a filled matrix bonded by interdiffusion with the substrate. The matrix is applied by impinging on the substrate metal surface a plurality of heated metallic particles, such as by plasma spraying. The coating includes a filler metal of aluminum and preferably an alloy of aluminum and at least one other element, for example Cr, deposited on and interdiffused with the matrix, such as through a halide vapor deposition process employing a mixture of aluminum powder and other powders. As a result of application of the filler metal, there is provided from the matrix a coating layer of an alloy including an average of about 8 - 20 weight percent aluminum, the application process resulting in substantial recrystallization of the matrix.

Abstract: This invention relates to high-temperature, oxidation-resistant refractory materials or alloys and to a method of preparing said alloys which have an outer skin containing at least one noble metal, e.g., platinum, and/or silver, in amounts greater than the amount of noble metal present in the alloy beneath said skin. The alloy comprises at least one noble metal selected from the group consisting of platinum, gold, silver, rhodium, iridium and palladium. The noble metal is added in amounts ranging from 0.1 to 15% by weight of the total composition to hafnium or to hafnium containing from about 0 to 50% by weight of zirconium, and heated to temperatures ranging from about 1000.degree.F to 3800.degree.F in an oxidizing atmosphere.

Abstract: The invention relates to blanks made of aluminum or aluminum base alloys for wiredrawing by impact, and to their method of obtaining same. These new blanks are obtained by casting and cooling under pressure, and are characterized by a fine and homogeneous grain, a crystalline structure with axial symmetry and an almost complete absence of pinholes, occlusions of a gaseous nature, and basaltic crystalline formations. They are intended for the fabrication by impact wiredrawing of such containers as tubes, carrying cases, boxes, packaging material, aerosol bombs, extinguisher bodies, bodies of bottles or cartridges for compressed or liquefied gases.

Abstract: The contact materials comprise silver with additions of mercury or mercury and tellurium and silver-cadmium oxide compositions with additions of mercury and tellurium. The methods of making the materials include the steps of adding a silver-mercury alloy to molten silver and to a molten silver-tellurium powder mixture. The materials including cadmium oxide are produced by heating a mixture of powders of silver, a cadmium-tellurium compound, cadmium oxide, and mercuric oxide powders in a reducing atmosphere and then reoxidizing.

Abstract: The addition of copper or copper-base alloys to conventional dental alloys used in amalgams (prior to the formation of the amalgam) has been found to remove tin from its normal matrix phase whereby a more corrosion resistant and clinically improved dental amalgam results.

Abstract: An ion plating method and product therefrom wherein ions of a metal are implanted into or/and plated onto a substrate to increase the hardness of the surface. After plating, the product can be reacted with carbon, boron, nitrogen or another metal, thereby forming the carbide, boride, nitride or metal compound of the plating metal coating. Hardening of the product by quenching follows which produces a cutting tool of superior qualities.

Abstract: Aluminum-manganese alloys containing up to about 10.0% by weight manganese are made by reacting molten aluminum with a manganese oxide, such as MnO or MnO.sub.2, under a blanket of fluoridic salts, for example cryolite. The alloy can also be prepared by electrolyzing the oxides of aluminum and manganese in a fluoridic bath using aluminum metal as cathode.

Abstract: Composite coatings are formed of a ceramic-type material such as chromium carbide over an intermediate layer of a ductile metal such as nickel on stainless steel turbine compressor blades. Such coatings were found to reduce the erosion by entrained particles to less than 10 percent that experienced by uncoated blades.

Abstract: An improved lead assembly adapted for utilization in a semiconductor device having a glass envelope, an electrical device positioned within said envelope having at least one end surface, said lead assembly comprising a metallic seal member adapted for extending through and bonding to said glass envelope and affixing to said end surface of said electrical device along a first common interface, and a metallic lead member bonded along a second common interface to said metallic seal member, said second common interface located externally of said glass envelope. The improvement comprises providing a secondary path for heat transfer in the form of a substantially uniform copper coating along the entire first common interface between said electrical device and said seal member to thereby facilitate the removal of heat from within said semiconductive device.

Abstract: A process for providing a tungsten carbide wear surface to wear parts with relatively large wearing surfaces employs treated and nickel plated tungsten carbide tiles arranged in a matrix and brazed to a surface to be protected by employing low temperature brazing.