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Circuitry.--Using a special bonding technique, International Resistance Company, Philadelphia, has succeeded in cladding a non-adherent polymer, fluorocarbon plastic, with copper. The resulting new laminate, in which no resin adhesive is used, features very low cold flow, zero water absorption, excellent machineability and a water-repellent surface. Also, it is unaffected by acids, alkalies, or common organic solvents. Fluorocarbon plastic is a thermoplastic material, and is inherently less rigid than thermosets--especially in thin sections. This copper-clad laminate is especially recommended for use under severe temperature, moisture, and electrical conditions.
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New Permanent-Magnet Materials.--Five new permanent-magnet materials, known as cunico, cunife, vectolite, alnico I2 and silmanal, have been announced by the General Electric Company. These new materials have many applications in the manufacture of aircraft instruments, as well as other industrial us