Word: alloy
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Dates: during 1950-1959
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...high temperature (which favors efficiency) without high pressure, another reactor will have heat-resistant graphite as its moderator and will be cooled by a molten sodium-potassium alloy. Still another will have a novel gimmick. Its cooling water will be allowed to boil, and the steam generated will be used directly to drive a 5,000-kw. turbine. This cuts out the conventional heat exchanger used in the reactor of the submarine Nautilus to generate nonradioactive steam. Dr. Smyth did not say so, but the turbine will probably become so radioactive that it cannot be approached by humans...
This is far stronger than any known metal or alloy. The tensile strength of annealed iron wire is about 60,000 Ibs. per sq. in. The best alloy steel, a carefully contrived structure of many different kinds of crystals, has a tensile strength of less than...
Metallurgists J. F. Nachman and W. F. Buehler of the Naval Ordnance Laboratory, White Oak, Md. were working on a hard, magnetic alloy called 16-Alfenol. They reported to their boss, Carroll W. Lufcy, that it was not only magnetic but heat-resistant. So the three of them set about emphasizing the alloy's unexpected heat resistance, avoiding scarce materials...
Last week they told about a new alloy, Thermenol, which is made of cheap, plentiful materials (iron, aluminum and a little molybdenum). It resists heat and corrosion better than some kinds of expensive stainless steel, and it is 20 to 25% lighter. Lufcy believes that it may eventually become as common as ordinary iron...
...size radioactive battery that is somewhat more efficient. A film of Strontium 90 is spread on a wafer of silicon. When its beta particles shoot into the silicon, each of them releases 200,000 fresh electrons, which are collected as an electric current by a spot of silicon-antimony alloy...