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Additives for high-temperature liquid lubricantsA preliminary research program was conducted to demonstrate a new concept for additives to liquid lubricants. It was demonstrated that suspensions of o-phthalonitrile and a substituted 1,2-maleonitrile in mineral oil and dilute solutions of o-phthalonitrile and tetrafluoro-o-phthalonitrile extended the lifetime of bearings under boundary lubricating conditions. The solutions exhibited coefficients of friction under high loads of 0.02-0.03. These results were consistent with the hypothesis that these compounds react with the hot metal surface to form a planar lubricating film by means of a metal or metal oxide template reaction. Also, the adherence was very strong due to the chelating action of the planar macrocycles postulated to form under the experimental conditions.
Document ID
Document Type
Conference Paper
Lawton, Emil A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Yavrouian, Andre H.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Repar, John
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Subject Category
Nonmetallic Materials
Meeting Information
Engineered Materials for Advanced Friction and Wear Applications(Gaithersburg, MD)
Accession Number
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