Accession Number : ADA111987

Title :   Program to Compare Deuterated Lubricant with Synthetic Hydrocarbon Lubricant.

Descriptive Note : Final rept.,

Corporate Author : CHARLES STARK DRAPER LAB INC CAMBRIDGE MA

Personal Author(s) : Gelotte,Erik ; Kingsbury,Edward

PDF Url : ADA111987

Report Date : 18 Sep 1981

Pagination or Media Count : 36

Abstract : A program was conducted under subcontract to Geo-Centers Inc., Newton Upper Falls, MA (subcontract No. 80-7001) to evaluate, by direct comparison, the performance of a synthetic hydrocarbon lubricant with a modified version in which the hydrogen has been replaced by deuterium. The program was conducted in two tasks as follows: Operating Bearing Evaluation; and Controlled Slip Evaluation. It was found in Task I that at each test temperature the deuterated grease performed better, that is, ran for a longer time before the bearing torque doubled, than the hydrogenerated grease. In the controlled slip evaluation a qualitative difference in degradation rates between the hydrogenated and deuterated oils was observed for the flooded, high slip, low pressure ball-to-ball contacts in these tests. The deuterated oil showed lower degradation rates. No difference could be shown for the high pressure, low slip ball-to-race contacts. (Author)

Descriptors :   *Lubricants, *Synthetic materials, *Deuterium, *Comparison, Hydrocarbons, Test and evaluation, Hydrogen, Performance(Engineering), Low pressure, Operational effectiveness, Sliding contacts, Lubricating oils, Torque, Degradation, Rates, Low rate, Temperature

Subject Categories : Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE