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Pure nickel possesses a useful combination of properties, including corrosion resistance, good strength, and high ductility, even at extremely low temperatures. It also possesses useful electronic properties and special magnetic properties. Nickel is a particularly good catalyst for the hydrogenation of unsaturated compounds in vegetable, animal, and fish oils, converting them from liquids to solids. Natural oils treated in this way are used in such products as shortening, oleomargarine, and soap. Nickel is essential as the base for oxide-coated cathodes used in all television tubes and all but the largest radio power tubes. Alloyed with about 2 percent tungsten plus ...(100 of 3037 words)
