Showing papers on "Electroless nickel plating published in 1978"
TL;DR: In this article, the effects of ultrasonic irradiation on electroless nickel plating were studied for both basic and practical purposes, and the results indicated that the application of ultrasound during...
Abstract: The effects of ultrasonic irradiation on electroless nickel plating were studied for both basic and practical purposes. The results reported here indicate that the application of ultrasound during ...
26 citations
27 Oct 1978
TL;DR: An explanation of the electroless nickel plating process is given and important metallurgical and mechanical properties of the plating are discussed in this article, where optical applications of electroless Nickel are described.
Abstract: An explanation of the electroless nickel plating process is given and important metallurgical and mechanical properties of the plating are discussed. Optical applications of electroless nickel are described. Machinability tests were conducted with variations in types of plating, thickness of plating, types of substrates, and heat treatment of the plating; results of the testing program are presented.
16 citations
Patent•
26 Dec 1978
TL;DR: In this article, the authors used a porous electrode substrate which is formed by solidifying porous resin and porous fiber and metal plating to improve the conductivity and strength and to make easy the preparation of swirl electrodes.
Abstract: PURPOSE:To improve the conductivity and strength and to make easy the preparation of swirl electrodes by using a porous electrode substrate which is formed by solidifying porous resin and porous fiber and metal plating. CONSTITUTION:A porous resin of polyurethane, polystyrol, or urea resin and a porous fiber such as fabric, non-woven fabric, or felt of polyamide, polyester, or polyacrylnitrile are solidified with a adhesive of vinyl chloride, styrol, or epoxy. Then electroless nickel plating and electrolytic nickel plating are applied to form a nickel layer of about 25. Furthermore the resinous material may be removed by heat decomposition to reduce the weight of the substrate and increase the porosity.
12 citations
Patent•
14 Apr 1978
TL;DR: In this paper, the authors used alternate operative plating tanks of glass fiber reinforced urethane with polypropylene liners, and a third tank of cleaning fluid applied to the tank not being used.
Abstract: Electroless plating using alternate operative plating tanks of glass fiber reinforced urethane with polypropylene liners, and a third tank of cleaning fluid applied to the tank not being used.
10 citations
Patent•
30 Mar 1978
TL;DR: In this paper, the authors apply electroless nickel plating to nonconducting substrates, e.g. glass, ceramics, or plastics, to the signal surfaces of optically readable data carriers with high storage density.
Abstract: Electroless nickel plating is applied to nonconducting substrates, e.g. glass, ceramics, or plastics, esp. to the signal surfaces of optically readable data carriers with high storage density. The substrates are first sensitized in SnCl2 soln., followed by activation with AgNO3, and PdCl2, then plated in a bath contg. NaH2PO2 as the reducing agent and with the compsn. :- 6.2 g/l NaC2H3O2 + 3H2O; 1.3 g/l H3BO3; 3.3. g/l (NH4)2SO4; 34.2 g/l of NiSO4, 6H2O; 25.0 g/l Na2H2PO2, H2O; and 0.1 g/l NH4F. The bath has pH 5.5-6.0, and is used at 32 degrees C. The plating of a master glass plate for audio cutting foils, or data carriers made of pressed PVC-PVA plastic, where the carrier can be given a reflecting coating in an immersion time of ca 10 mins. The Ni deposit can then be electroplated, e.g. for mfg. dies for pressing gramophone records, or for mfg. video records.
2 citations
Patent•
17 May 1978
2 citations