British Intelligence Objectives Sub-Committee Trip no. 2005, April/May 1946. B.I.O.S. Final Report no. 995.
|Statement||by E.S. Hedges, P.G. Forrester.|
|Contributions||Forrester, P G., British Intelligence Objectives Sub-Committee.|
|The Physical Object|
|Number of Pages||44|
The electrodeposition of tin has a long history and a good summary of its established science and technology is given in the book by Jordan, while the protective coatings for metals book by Gabe provides a useful treatment of tinplate as a metallic coating. Tin is one of the very few metals suitable for contact with foodstuffs during by: Electrodeposition of alloys with specific properties is one of the latest trends in plating ~ndustry. Tin - zinc alloys are attractive because they combine the barrier property of tin with the cathodic protection offered by zinc. The coatings protect steel better than zinc under conditions of Cited by: 3. Zinc–tin alloys have been deposited from a variety of aqueous baths including sulphate, gluconate and pyrophosphate baths. The alloys are found to have better corrosion resistance than pure zinc, particularly in high humidity conditions and are also reported to be superior to cadmium deposits in marine environments. 2. ExperimentalCited by: Presently there are two processes for the tinning of the black plates namely (i) hot dipping process and (ii) electroplating process. Hot dip tinning process. Hot dipping process was the first modern technique of manufacturing tinplate. It consists of the hot dipping of single sheets of steel in a bath of molten tin.
The tin plating electrolyte composition and operating conditions are given in Table ml de-ionized water was taken in a glass beaker and the required quantity of tin-plating chemicals, shown in Table 1, in the given order was dissolved completely into final volume was made up to 1 l and the pH was adjusted to ± Electroplating of tin from acidic plating solutions has been studied for more than one hundred years. The plating solutions contain various additives in addition to stannous ions, which make them complicated and difficult to control. In this work, a simple tin plating solution has been developed. The slightly acidic electrolyte contains only two components: tin (II) chloride and tri-ammonium. For copper and copper alloys, hot tin dipping prevents the base material from oxidizing. Hot Tin Dipping Prevents Whisker Growth. Also, hot tin dipping is thought to be one of the more effective mitigating strategies for preventing whisker growth, a problem that plagues critical electronic systems. Hot Tin Dipping Meets ASTM A Specifications. Electroplating is almost always preferable to hot dipping if the object is thin decorative coatings. Bright acid tin electroplating is probably the best. Ideal prep is probably electrocleaning followed by a sulphuric acid dip. However, please don't design based on book .
The electrodeposition of alloys containing less than 50 per cent of tin presents greatly increased operating difficulties and it probably is more economical to apply those alloys by hot dipping. Electrodeposition of Tin–Lead Alloys. Geislingen/Steige, Germany. Search for more papers by this author. Manfred Jordan. Dr. Ing. Max Schlotter, Geislingen/Steige, Germany. Search for more papers by this author. Book Editor(s): Mordechay Schlesinger. University of Windsor, Windsor Ontario, Canada. The third part discusses the practical aspects of the electrodeposition of alloys, focusing primarily on the electrodeposition of alloys from aqueous solutions. This part examines first brass and bronze plating, followed by the electrodeposition of copper-tin, silver, and iron containing alloys. During tin-copper alloy electrodeposition, the measured cell voltage was V, V and V, respectively. The position at x = 0 cm is closest to the counter electrode and x = 8 cm is furthest away from the counter electrode. At a low current density, the alloys contained predominantly copper; and 20 to 35 wt.% tin showed a golden yellow.