Abstract: A layered article having a curved surface made of a supporting metal metallurgically bonded to a supported metal.

Abstract: A palladium alloy for use in making porcelain jacketed dental restorations having the following composition: 60-85 percent by weight palladium, 5-20 percent by weight copper, 3-15 percent by weight gallium, and a modifier metal selected from gold, indium, ruthenium, tin, nickel and mixtures thereof, the sum of the concentrations of the modifier metal percent in the alloy being greater than 5.5 percent by weight.

Abstract: A crucible for preparing a single crystal which comprises an iridium-rhenium alloy comprised of from about 80 to about 99 parts of iridium and from about 1 to about 20 parts of rhenium. The crucible has excellent creep resistance and compatability properties and is especially useful for the preparation of gadolinium-gallium-garnet crystal.

Abstract: A multi-layer solar energy collector of improved stability comprising: (1) a substrate of quartz, silicate glass, stainless steel or aluminum-containing ferritic alloy; (2) a solar absorptive layer comprising silver, copper oxide, rhodium/rhodium oxide and 0-15% by weight of platinum; (3) an interlayer comprising silver or silver/platinum; and (4) an optional external anti-reflective coating, plus a method for preparing a thermally stable multi-layered solar collector, in which the absorptive layer is undercoated with a thin film of silver or silver/platinum to obtain an improved conductor-dielectric tandem.

Abstract: A method of extruding aluminum base alloys having high strength and high electrical conductivity properties which comprises providing an aluminum base alloy containing from 0.04 to 1.0% iron, from 0.02 to 0.2% silicon, from 0.1 to 1.0% copper, from 0.001 to 0.2% boron, balance essentially aluminum; heating the cast alloy ingot or billet to a desired extrusion temperature, extruding the material, cooling the extruded product, drawing down the cooled product, and finally aging the drawn product. The alloy material utilized may be homogenized before being extruded.

Abstract: Processing copper base alloys to improve the stress corrosion resistance thereof. Copper base alloys containing from 12.5 to 30% nickel and 12.5 to 30% manganese are subjected to a duplex aging treatment in order to improve the stress corrosion resistance thereof.