Abstract:
A composite material is provided by this disclosure which utilizes prior art host matrix materials with new resident inclusions for structural members with unique properties and applications. An illustrative embodiment of a composite material according to the principles of this invention is described with fiber inclusions fabricated by electroplating of a polycrystalline film on a substrate. Polycrystalline fibers are fabricated with a wide range of sizes to have strength approaching those of a single crystal whisker of the polycrystalline material. An illustrative composite material is fabricated with a host matrix of epoxy resin in which resident fiber inclusions are dispersed.
Abstract:
A method for high resolution maskless electroless plating is described. Preferential plating results from exposing those regions where plating is sought to an energy beam to increase the plating rate by a factor of 103 to 104. This enhancement is sufficient to make masking unnecessary.
Abstract:
WATER BASED SELECTABLE CHARGE MAGNETIC INKS Water based magnetic colloidal fluids, useable as inks, when prepared by coating chemically precipitated magnetite (Fe304) with an adsorption site providing coating agent including certain organic anions, such as sulfates, sulfonates or amino carboxilates, and then dispersing the coated product with non-ionic, anionic or cationic surfactants may exhibit selectably cationic, anionic or non-ionic charge responsiveness.
Abstract:
The effect of superimposing a sinusoidal alternating current on a direct current during electrodeposition of Ni-Fe alloys is disclosed in terms of the following factors: (a) maintaining the pH at the electrode equal to that of the bulk electrolyte; (b) ionic diffusion processes; and (c) chemical processes in solution prior to electrochemical reduction. The effect of frequency, amplitude and the rate of a-c current to d-c current on the composition of electrodeposited alloy are given for acid solutions of different pH and for alkaline solutions of metallic complexes with a variable concentration of complexing agent. It is shown that by proper choice of conditions, electrodeposited Fe-Ni alloys can be prepared with a desired uniform composition throughout their thickness.
Abstract:
MASKLESS METHOD FOR ELECTROLESS PLATING PATTERNS A method for high resolution maskless electroless plating is described. Preferential plating results from exposing those regions where plating is sought to an energy beam to increase the plating rate by a factor of 103 to 104. This enhancement is sufficient to make masking unnecessary. YO979-021
Abstract:
1,176,124. Coating with metals. INTERNATIONAL BUSINESS MACHINES CORP. Jan.8, 1968 [Jan.13, 1967], No.1038/68. Heading C7F. In the electroless deposition of a metal coating on a polymer, the surface is coated with a constituent monomer of the polymer, the monomer polymerized, and coated with a reducible metal salt, the monomer acting as a reducing agent for the metal salt. In an example a urea formaldehyde substrate is soaked in nitric acid, rinsed, dipped in formaldehyde, dried to polymerize the coating, and then the coatings is depolymerized in the presence of a metal salt which may be palladium, gold or nickel chloride or nickel, cobalt. or copper sulphate. The metal salt is reduced during this process. The substrate is then coated with Ni, Co, Cu, Pd or Ni-Fe, Ni-Co, or Ni-W-P alloys. Examples of both alkali and acid electroless nickel plating baths are desinked. The coating may be subsequently electro-plated.