Word: tungsten
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Columbia's Professor Colin Garfield Fink, who gave Industry a chromium-plated shield against rust, last week took out a patent for a tungsten-plated shield...
Uses of Dr. Fink's tungsten plate will be less ubiquitous. Its chief value lies in its resistance to hydrochloric acid. Only gold is so resistant. But gold is too precious to coat the pots and pipes of Industry. Professor Fink, 51, claims to be the "originator of the drawn tungsten filament'' for lamps.* Another scientist given the kudos is General Electric's Dr. William David Coolidge, 59. In 1914 the American Academy of Arts & Sciences gave Dr. Coolidge its prized Rumford Medal for the ''invention and applications of ductile tungsten." Dr. Coolidge also...
...Tungsten lamps use 1.25 watts to produce one candlepower of light. Carbon filament lamps, which are still purchasable, give one candlepower for 3.25 watts. From these ratios statisticians figure that tungsten filaments save U. S. users of electricity one billion dollars yearly. Consumers buy 300,000,000 tungsten lamps a year...
...Tungsten is one of the hardest metals. Its melting point is high, 2,974° C. It is more lustrous than silver, nickel or chromium. Most important commercially is its resistance to corrosives. Only nitric acid and hot hydroxide solutions affect tungsten. Factories dealing with chemicals need just such a resistant to coat their pipes and pots...
Electroplating is the only practical way of putting on tungsten coats. But the electroplater needs a stable solution of a tungsten salt in water. Most tungsten compounds decompose in water or else are altogether insoluble. Professor Fink's accomplishment was to prevent the tungsten atom of his sodium tungstate molecule from going into another tungsten compound. The tungsten atom, thus kept free from changing relations, could be driven by an electric current and deposited on pieces of brass, copper, zinc, iron or carbon...