Abstract: This invention relates to a composite material for vacuum brazing comprising a cladding material for vacuum brazing composed of 0.1-2.0 wt. % of zinc, 0.01-2.0 wt. % of lithium and the balance of aluminum, and a core material consisting of aluminum or an aluminum alloy having said cladding material clad onto one surface of both surfaces thereof.

Abstract: A spinodal decomposition type magnetic alloy which contains, in addition to 3 to 30% by weight cobalt, 10 to 40% by weight chromium, and iron, a quantity of 0.1 to 15% by weight vanadium, preferably 0.5 to 10% by weight vanadium. A body made from this alloy has excellent magnetic properties and excellent cold workability.

Abstract: A die steel having high hardenability, high hardness, good toughness and capable of achieving a high polished surface flatness in the air or oil quenched and tempered condition. Such steel is ideally suited as a die steel for lens quality and photo-etching applications. The unique combination of properties is accomplished through a careful balancing of the chemistry, particularly control of those elemental additions which promote segregation. Within the broad chemistry limits, by weight, of carbon 0.3 to 0.8%, and the maximum quantities of manganese 3.0%, phosphorus 0.025%, sulfur 0.025%, silicon 2.0%, nickel 4.0%, cobalt 4.0%, chromium 3.0%, vanadium 1.0%, molybdenum 1.5%, tungsten 1.5%, niobium 0.1%, titanium 0.5%, aluminum 0.10%, optionally boron between 0.0005 and 0.012%, balance iron, the desired polishability can be achieved through adherence to the equation:Surface Roughness (.mu.-inch)=Boron factor [7.07-12.5(% C)+0.72(% Mn)+0.45(% Si)-2.9 (% Ni)+1.13(% Ni).sup.2 +0.87(% Cr)+2.1(% V)+1.12 (% Mo)+0.

Abstract: An anticorrosive bellows made of stainless steel containing 0.10% by weight or less of C, 2.5-5% by weight of Si, 2% by weight or less of Mn, 15-20% by weight of Cr, 10-22% by weight of Ni, 10 times or more as much as the C content but at most 2.5% by weight of at least one element selected from the group consisting of Ta and Zr, and the remainder consisiting substantially of Fe shows excellent corrosion resistance even under strongly corrosive circumstances, e.g. fuming or concentrated nitric acid. Said stainless steel has improved workability, weldability and endurance and the produced bellows can be used as a bellows valve, a bellows joint, and the like.

Abstract: A high strength, tough alloy steel, particularly suitable for the mining industry, is formed by heating the steel to a temperature in the austenite range (1000.degree.-1100.degree. C.) to form a homogeneous austenite phase and then cooling the steel to form a microstructure of uniformly dispersed dislocated martensite separated by continuous thin boundary films of stabilized retained austenite. The steel includes 0.2-0.35 weight % carbon, at least 1% and preferably 3-4.5% chromium, and at least one other subsitutional alloying element, preferably manganese or nickel. The austenite film is stable to subsequent heat treatment as by tempering (below 300.degree. C.) and reforms to a stable film after austenite grain refinement.

Abstract: A method of selectively enhancing the growth rate of silicon oxide in the manufacture of semiconductor devices results in a reduction in encroachment of oxide into the edges of areas masked by silicon nitride. Implanting an impurity material into the monocrystalline silicon surface, without annealling to correct implant damage, causes the surface to oxidize at lower temperatures and faster rates.

Abstract: A high strength, tough alloy steel is formed by heating the steel to a temperature in the austenite range (1000.degree.-1100.degree. C.) to form a homogeneous austenite phase and then cooling the steel to form a microstructure of uniformly dispersed dislocated martensite separated by continuous thin boundary films of stabilized retained austenite. The steel includes 0.2-0.35 weight % carbon, at least 1% and preferably 3-4.5% chromium, and at least one other substitutional alloying element, preferably manganese or nickel. The austenite film is stable to subsequent heat treatment as by tempering (below 300.degree. C.) and reforms to a stable film after austenite grain refinement.

Abstract: A novel high permeability alloy which excels in wear resistance, yet possesses a high permeability, and is particularly suitable for use in magnetic recording heads. The composition of the wear resistant, high permeability alloy of this invention includes a small amount (0.001-1 wt %) of boron added to an alloy known by the name of "sendust" or a sendust-based alloy. The wear resistance of sendust or sendust-based alloys is greatly improved by the addition of boron.

Abstract: A new high speed steel with improved cutting life is provided consisting essentially of about 0.7 to 1.6% carbon, about 0.2 to 1.0% silicon, about 0.2 to 0.8% manganese, up to about 0.2% sulphur, about 0.5 to about 20% tungsten, about 0.5 to about 10% molybdenum, about 0.5 to 5% chromium, about 0.5 to about 6% vanadium, up to about 10% cobalt, more than 0.03% to about 0.20% phosphorus, the balance iron with residual impurities in ordinary amounts.

Abstract: A new clad metal product free from orange peel effect is provided consisting of a core having at least one layer each of copper and of aluminum coated aluminum alloy and at least one outer cladding layer of stainless steel on the layer of aluminum coated aluminum alloy.

Abstract: Iron-nickel-chromium alloy wherein other elements, including columbium and titanium, are specially controlled has high strength and long-time stability for extended service at intermediate temperatures, such as automotive turbine service for 5000 hours at 1200.degree. F.

Abstract: A dental alloy capable of combination with mercury to form a dental amalgam comprising by weight 20% and above silver, 20 to 50% tin, 9.5 to 50% copper, and 0.5% and above indium.

Abstract: There is provided a chromium-nickel austenitic stainless steel having improved resistance to intergranular stress corrosion cracking. The steel has low carbon and phosphorus content or carbon and phosphorus in solid solution fixed by niobium addition. Further resistance to transgranular stress corrosion cracking is realized with a low molybdenum content. The steel is particularly useful in applications involving exposure to high-temperature and high-pressure water and attack by chlorides.

Abstract: The thin film magnetic medium of a magnetic disc, and the read/record head employed with the disc are both protected from abusive use and physical damage as well as chemical damage (including damage due to heat and/or humidity) by a polysilicate layer, formed upon the magnetic medium. Inexpensive methods of forming the protective film (which methods lend themselves to mass production) are described. These methods are a small fraction of the cost of present day techniques.

Abstract: A secondary hardening alloy steel composition consisting essentially of about 0.25-0.5% carbon, about 0.5-1.0% manganese, about 1.5-3.0% nickel, about 0-1.0% chromium, about 1.75-2.5% molybdenum, about 0-0.4% vanadium, and an additive selected from about 1-3% aluminum and a combination of at least about 1% aluminum and at least about 1% silicon for a combined Al+Si content of about 2-4%, the balance being iron and impurity elements. The present steel composition has the following characteristics: it exhibits a flat tempering response, it is hardenable upon tempering to a Rockwell C hardness of at least 50, and it has an improved combination of hardness vs. toughness properties after tempering in the secondary hardening range. A method of preparation is also described.

Abstract: A ferritic, nickel-free alloy steel composition, suitable for cryogenic applications, which consists essentially of about 10-13% manganese, 0.002-0.01% boron, 0.1-0.5% titanium, 0-0.05% aluminum, and the remainder iron and incidental impurities normally associated therewith.

Abstract: An aluminum brazing sheet comprises a core of an aluminum alloy and a first layer of an aluminum brazing alloy provided on at least one side of the core to form a composite. A second layer of an aluminum alloy is clad on both sides of the composite. The aluminum alloy of the second layer can contain 0.5 to 1.2 wt.% Mg and 1.2 to 1.8 wt.% Si. In addition, the aluminum alloy of the second layer can contain 0.2 wt.% Cu max., 0.7 wt.% Fe max., 1.5 wt.% Mn max., the remainder aluminum and incidental impurities. The second layer has a melting point substantially equivalent to the melting point of the brazing layer.

Abstract: A vacuum furnace is provided with subatmospheric pressure control of a diffusable media and with a fan at an end of a heated load chamber to circulate uniformly the diffusable media around the workpieces which are contained within the load chamber.

Abstract: An age hardenable iron-base alloy weld deposit consisting essentially of, in weight percent,______________________________________ Carbon 0.2 maximum Manganese 1.3 maximum Silicon 1.0 maximum Phosphorus 0.02 maximum Sulfur 0.02 maximum Chromium 3 to 10 Molybdenum 9 to 13.5 Cobalt 15 to 25 Nickel 0.3 maximum Iron Balance ______________________________________Wherein the ratio of (% chromium plus % molybdenum) to (% cobalt plus % nickel) is between about 0.75 and about 1.10.

Abstract: Metal alloys in an amorphous state are employed in the fabrication of cutting implements such as razor blades or knives. The implement may be formed from the amorphous metal or a coating of the amorphous metal may be applied. Such products may be formed from a ribbon of the amorphous metal alloy which has been prepared by quenching the molten metal or by coating the amorphous metal alloy on a suitable substrate such as by a sputtering procedure or vapor, chemical or electro-deposition of the alloy on the substrate.