8 research outputs found
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NACA Technical Notes
Note presenting a determination of the influence of crystal plane on dry static friction between two single crystals of copper from the surface of which all oxide had been removed. The influence of the surrounding atmosphere on wear between two dry polycrystalline copper surfaces was determined by measuring the time required for a copper sphere to wear through a film of copper deposited on a cylindrical steel rotor
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NACA Technical Notes
Note presenting a general survey of the influence of crystal plane on the chemistry of the oil-metal interface. Single crystals of 13 metals were grown, converted into spheres, and had their surfaces specially prepared, and five chemical processes important to the operation or manufacture of lubricated surfaces were studied. Results for aluminum, copper, gold, lead, nickel, silver, chromium, iron, cadmium, zinc, bismuth, tin, indium, and copper on other metals are provided