LUBRICATION OF CORROSION-RESISTANT ALLOYS BY MIXTURES OFnHALOGEN-CONTAINING GASES AT TEMPERATURES UP TO 1200° F

摘要

Friction and wear experiments were conducted to explore the effects of high temperature, varied bromine content, and postulated reaction mechanisms on boundary lubrication with reactive gases. Dibromodifluoro-methane (CF2Br2), monobromotrifluoromethane (CF3Br), monobromotrifluoromethane (CHF2Br), and sulfur, hexafluoride (SF6) gases were used to lubricate various nickel and cobalt alloys at temperatures up to 1200° F. A 3/l6-inch-radius hemispherical rider under a load of 1200 grams contacted the flat surface of a rotating disk;the usual surface speed was 120 feet per minute- In some cases the surface Speed was varied.