Abstract: A method is described for forming a corrosion resistant electrical component comprising exposing an electrical component to a first atmosphere containing silicon ions to coat the electrical component with a polysilicon film; and exposing the polysilicon coated component to a second atmosphere containing carbon ions generated from a gaseous mixture comprising a carbon source gas to encapsulate the polysilicon coated electrical component with a diamond-like carbon coating, the carbon source gas having a carbon to hydrogen atom ratio of between about 1:1 and 1:2.

Abstract: The present invention features a vibration attenuation assembly designed for the protection of single axis instruments such as accelerometers. The assembly includes an inner cylinder housing one or more single axis accelerometers co-aligned with a principle axis of the cylinder. The inner cylinder is suspended by three or more equally spaced springs at each end. The springs also function as electrical conductors for transmitting power and signals to the accelerometer. The inner cylinder is longitudinally shiftable within the outer cylinder and a main fluid cavity exists between the exterior surface of the inner cylinder and the inner surface of the outer cylinder. A rigid outer cap is provided at both ends of the outer cylinder and a rigid inner cap is provided at both ends of the inner cylinder.

Abstract: Target capable of producing a desired infrared signature of an intended target object. Heated gas is transported through a thermal system. Gas leaks out of the system at locations constructed of gas-permeable material. Gas-permeable locations are selectively placed to create the desired infrared signature of the intended target object.

Abstract: A tungsten-nickel-iron-cobalt high density alloy having unexpected improved strength and hardness properties and the method of making such alloy are disclosed. The alloy has from about 85-98% by weight tungsten with the remainder being a nickel-iron-cobalt binder in which the cobalt is present in amounts of from at least about 5% up to 47.5% by weight of the binder and the amount of cobalt being equal to or less than the amount of nickel. After the powders of the elements in the indicated amounts are homogeneously blended, compacted into a shape and sintered, the sintered shape is subjected to a heat treatment in a flowing argon atmosphere for a period of time and at a temperature at least sufficiently high to solubilize the intermetallic or .mu. phase, Co.sub.7 W.sub.

Abstract: A method of producing a high density tungsten alloy sheet product is disclosed which utilizes as a starting material a thin-gage sheet or foil substrate of a first alloy constituent, such as pure iron or an alloy thereof. A prescribed mixture of tungsten metal powder and a second metal alloy constitutent powder, such as nickel, is loaded on the substrate and partially consolidated in a protective atmosphere furnace to form a porous tungsten alloy skeleton which is also partially bonded to the substrate. The product is then preferably cooled in a protective atmosphere and sheared into desired lengths. The sized pieces are then further heated in a protective atmosphere at gradually increasing temperatures to a point above the melting point of the substrate, whereupon the substrate sheet or foil melts and infiltrates the porous tungsten alloy skeleton to complete the densification of the product.

Abstract: A player piano recording system has photosensor flags secured to the undersides of the piano keys, vertical movement of which is detected by horizontally adjustable photosensors to produce "key played" and key velocity signals which supplied to a microprocessor for deriving expression signals for recording on magnetic tape. The microprocessor provides output expression values and key play information. According to the invention, the expression values are a direct function of key velocity and key play information and switch selected boost (an enhanced initial frame expression for overcoming solenoid inertia) and add (for trill) values. Key play data is dependent upon key play inputs and the frame extension switch value. The unique structure of the key flag permits horizontal adjustment of the photosensors for vertical misalignments etc. of the piano keys.