Mazloum Ardakani, M Salavati-Niasari, M Khayat Kashani, M Ghoreishi, S MĪ sol-gel electrode and a coated wire ion-selective poly(vinyl chloride) membrane, based on thiosemicarbazone as a neutral carrier, were successfully developed for the detection of Cu (II) in aqueous solutions. Data is presented that shows the material is copper abietate, not copper (II) chloride, and more importantly that the abietate does not aggressively attack nickel-plated copper wire.Ī copper ion-selective electrode with high selectivity prepared by sol-gel and coated wire techniques. Copper (II) chloride, which is also green in color is known to contaminate flight parts and is corrosive. The resulting material copper abietate is green in color and is formed during the application of heat during soldering operations. The flux used to solder the cables is known to contain abietic acid, a carboxylic acid found in many pine rosins used for the soldering process. Two likely candidates were possible due to the handling and environments to which these cables were exposed. Long-Term Effects of Soldering By-Products on Nickel- Coated Copper WireĪn analysis of thirty-year-old, down graded flight cables was conducted to determine the makeup of a green material on the surface of the shielded wire near soldered areas and to ascertain if the green material had corroded the nickel- coated copper wire. Recommendations for additional work are provided. Compatibility tests in the cooling/lubricating turbine oil at temperatures up to 220 deg. Electrical tests were made in air on coated samples at room and elevated temperatures. Lengths of wire were rolled and electrostatically coated with two epoxy insulations. The insulation of copper wire by the electrostatic coating processĪ review of the fluidized bed electrostatic coating process and materials available for application to flat copper conductor has been made. Process used to make coils for motors, solenoids, and other electrical devices to be operated at high temperatures. ![]() When cured to final brittle form, insulating material withstands temperatures above melting temperature of wire. After wire coiled, heating converts "green" coat to refractory electrical insulator. Wire-coating apparatus forms "green" coat on copper wire. Coated wire formed into coil or other complex shape. The copper wire part is completely welded on the copper substrate and the insulated coating material is driven from welded area to outsides of the wire specimens by high frequency complex vibration.įorming Refractory Insulation On Copper WireĪlternative insulating process forms flexible coat of uncured refractory insulating material on copper wire. Polyurethane coated copper wires of 0.036 mm outer diameter and copper plates of 0.3 mm thickness and the other dimension wires were used as welding specimens. The complex vibration systems consisted of a longitudinal-torsional vibration converter and a driving longitudinal vibration system. Welding characteristic of thin coated copper wires were studied using 40, 60, 100 kHz ultrasonic complex vibration welding equipments with elliptical to circular vibration locus. Tsujino, J Ihara, S Harada, Y Kasahara, K Sakamaki, N ![]() Characteristics of coated copper wire specimens using high frequency ultrasonic complex vibration welding equipments.
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