Abstract
Using a simplified rolling-four-ball method, the influence of gaseous hydrogen chloride dissolved in a Polish lubricating oil “Komprenol-32” on pitting was tested and the results were compared with those for pure oil. The hydrogen chloride dissolved in the oil increased the time to appearance of the first pit under the test conditions, despite its corrosive static action on the test balls. The pressure-viscosity relationship of the lubricant, and its hydrogen chloride and iron contents were measured. This paper offers a hypothesis to explain the observed improvement in pitting performance seen with the oil with dissolved HCl. So-called corrosion-tribopolishing is suggested as an explanation.
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