Abstract: A silverless low gold dental alloy contains, by weight, 10-40% gold; 3-8% gallium; 0.5-10% indium and/or tin; 0.1 to 1.5% ruthenium, or iridium, or rhenium; balance palladium. The alloy is non-staining and bondable to and compatible with porcelain.

Abstract: Barium ferrite particles of a coercive force of not more than 1,000 Oe suitable for use as a magnetic material for magnetic recording and a process for producing said particles are disclosed herein.

Abstract: The disclosed engine part uses an integral combination of a ceramic member and a metallic member, which ceramic member has a metallized layer formed on one side surface thereof, and a metallic buffer is bonded to the metallized layer so as to be disposed between the ceramic member and the metallic member.

Abstract: A solid non-permeable refractory plug has a spaced stainless steel jacket and is located in a pocket block for incorporation in the normal refractory brick lining of a ladle to provide a structure through which gas can be introduced into the molten metal. An upstanding arcuate deflector on the stainless steel jacket covers a substantial portion of the open upper end of the jacket to deflect gas flowing upwardly through the device into two separate and distinct streams resulting in an improved stirring action in the molten metal while serving to displace the molten metal that would otherwise tend to flow into the device and close the gas passageway.

Abstract: Herein disclosed are both waste gas circulation method and system for effectively recovering waste heat from an on-strand type sintering apparatus which has its sintering and cooling zones extending continuously along a horizontal strand. The hottest waste gases coming from the final stage of the sintering zone and the front stage of the cooling zone, in which the sintering reaction of a charge mixture is completed, are subjected to heat recovery, and sulfur oxides in the hottest gases are prevented from condensing on the water pipe or pipes of a waste-heat boiler by preheating the water, which is supplied for the heat recovery, with the still hot waste gases coming from the downstream half of the cooling zone. The heat of the still hot waste gases are exchanged with cold water so that this water may be heated into hot water. On the other hand, the heat of the hottest gases is exchanged with steam so that this steam may be heated into superheated steam.

Abstract: A gas-transmitting wall element for a metallurgical vessel having a refractory lining is described which is subject to low wear, is reproducible and makes unnecessary continuous blowing of gas through it. The element has an outer sheet metal box, open at one end, and a refractory filling in the box comprising at least one brick spaced from the closed end of the box, into which a gas inlet opens. The brick contacts the metal sidewalls of the box and has grooves to allow the gas to pass to the open end of the box.

Abstract: A blowing apparatus for simultaneously delivering gaseous and solid materials to a hot metal melt during refining is presented. The blowing apparatus or blowing lance provides a novel structure of an inner block, an outer block housing, and tubing wherein incompatible materials (i.e., oxygen and carbon) may be safely and simultaneously delivered by use of a protective structure which also functions as a cooling device. The blowing lance further includes a variety of nozzles for blowing materials both above and below the surface of the metal pool.

Abstract: A single crystal nickel base superalloy component, such as a gas turbine blade (20, 28) is mechanically deformed at elevated temperature to improve the yield strength of a portion which is used at temperatures below 800.degree. C., compared to a portion which is used at a higher temperature. A blade (20) has a root (22) which is deformed by 2-14% at 700.degree.-1100.degree. C. and an airfoil (24) which is not deformed. The root yield strength is increased 15-50% while the airfoil creep strength is maintained.

Abstract: Non-galling, low earing can stock suitable for deep drawing and wall-ironing into can bodies is prepared from continuously cast aluminum alloy strip of an inch or less in thickness. The strip material is heated to a temperature of from 950.degree. to 1150.degree. F. for a time sufficient to homogenize the alloy. The homogenized strip material is cold rolled to effect a first reduction in sheet thickness of at least 25%. The cold rolled sheet is heated to a recovery temperature of up to about 550.degree. F., and subjected to a second cold rolling to effect a reduction in thickness of up to 50%. The cold rolled sheet product is heated to the recrystallization temperature and then subjected to effect a final reduction in thickness of at least 50% of the original thickness of the sheet to impart an H19 temper to the sheet.

Abstract: A lead based alloy for electrode supports of a lead-acid storage cell, the alloy containing between 0.05% and 4% antimony between 0.02% and 0.3% magnesium, and no barium. The magnesium permits a reduced antimony content, thereby reducing the corrosion, self-discharge, and hydrogen-releasing overvoltage problems caused by the presence of antimony in electrode supports, without adversely affecting the beneficial mechanical properties provided by antimony. It is essential to have no barium, which causes cracking and high mass corrosion of the alloy during use in a lead-acid cell.

Abstract: Slag-free discharge of molten metal from a smelting furnace is assured either through slow tilting through a small angular range in case the outlet is located in a lateral bay extension of the furnace such that maximum depth level is retained above the outlet and the furnace is tilted back to a slight negative angle once the formation of eddys that could suck slag into the outlet becomes likely. In the case of a central discharge outlet, maximum depth level is still maintained above the outlet but the slag is stiffened, i.e. rendered highly viscous, so that any eddy will not tear slag particles off and suck it into the outlet. Certain ratios of water cooled surfaces to fire proof surfaces are to be observed.

Abstract: Certain Tm-containing iron garnet compositions provide layers having desirably high values of Curie temperature and magnetic anisotropy and permit the fabrication of devices having 1.2 .mu.m diameter magnetic bubbles. The compositions, based on Tm-substitution on dodecahedral sites of [(La,Bi)(Sm,Eu),(Ca,Sr),R].sub.3 (Fe,Si,Ge).sub.5 O.sub.12, are grown by liquid phase epitaxy onto suitable substrates. Bubble devices that incorporate the layers find applications in high density information storage.

Abstract: A dental alloy for porcelain-fused-to-metal restorations is provided which consists essentially of, on a weight basis, about 60-90% palladium, an effective amount of ruthenium up to about 2% for the purpose of grain-refining the alloy, an effective amount of copper up to about 30% for the purpose of lowering the melting point and raising the thermal expansion, up to about 15% indium, up to about 16% tin, up to about 12% zinc, up to about 5% gold, and from about 0.05 to about 0.25% boron or calcium boride, the total of said constituents being 100%, wherein the sum of the copper, indium, tin and zinc concentrations is greater than about 18%, the sum of the indium, tin and zinc concentrations is greater than about 10%, and the sum of the indium and zinc concentrations is greater than about 5%, such that said alloy exhibits a melting point between about 1100.degree. C. and 1400.degree. C. and a coefficient of thermal expansion of about 0.66 to 0.72 at 500.degree. C.

Abstract: A modified aluminum alloy 3004 composition comprising by weight 0.5-1.5% magnesium, 0.5-1.5% manganese, 0.1-1.0% iron, 0.1-0.5% silicon, 0.1-0.4% chromium, 0.0-0.25% zinc and 0.0 to 0.25% copper, the balance being aluminum. Webs of one inch or less in thickness formed from the alloy by continuous strip casting can be fabricated into non-galling, low earing can stock suitable for deep-drawing and ironing into high buckle strength two-piece beverage containers.

Abstract: A tundish cover for use with a treating ladle in the production of ductile iron is disclosed wherein the tundish cover is provided with a pouring spout, a pressure exhaust port, a treatment alloy charging tube, a slag removal port and mounting tabs to detachably connect the tundish cover to the treating ladle. The pressure exhaust port includes a floating cover to provide a host for oxide condensation during the treatment process. Removable covers on the charging tube and the slag removal port permit selective access to the interior of the treating ladle without requiring disassembly of the tundish cover from the treating vessel.

Abstract: Hardfacing of metal parts employing a thin, homogeneous, ductile foil is disclosed. The hardfacing foil has a composition consisting essentially of 0 to about 32 atom percent nickel, 0 to about 10 atom percent iron, 0 to about 30 atom percent chromium, 0 to about 2 atom percent tungsten, 0 to about 4 atom percent molybdenum, about 5 to about 25 atom percent boron, 0 to about 15 atom percent silicon and 0 to about 2 atom percent manganese and 0 to 5 atom percent carbon the balance being cobalt and incidental impurities with the proviso that the total of 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: Single crystal nickel base superalloys of the gamma-gamma prime type are strengthened by deforming them 2-14% at temperatures in the range 700.degree.-1100.degree. C. Yield strength will be increased typically by 25-50%, depending on the crystallographic orientation. Careful control of parameters is necessary to obtain the strengthening while avoiding recrystallization. The metal is first homogenized and provided with a fine gamma prime deformation; strain rates in the range of 10.sup.-1 cm/cm/sec or less are used.

Abstract: A two layer-coated steel material having an excellent resistance to corrosion and useful for motor vehicles, has a base coating layer formed on a surface of a steel substrate and comprising zinc or a zinc-based alloy and a surface coating layer formed on the base coating layer and comprising an iron-zinc alloy containing 40% or less of zinc.

Abstract: Herein disclosed are a method of heat-treating a weld zone of a piping system, in which the outer wall of a pipe is heated by means of a heating coil, while a coolant is present in said pipe, to establish a temperature difference between the inner and outer walls of said pipe thereby to prevent the weld zone of said pipe from corroding and cracking due to stress, and a heating coil therefor. The aforementioned heating coil is wound on the parent tube and the pipe welding desk generally concentrically thereof thereby to heat substantially uniformly all over the region of said weld zone.