Open AccessAging model for solid lubricants used in weapon stronglinks: Oxidation chemistry and hardware review
Author(s) -
D.E. Peebles,
James Anthony Ohlhausen,
M.T. Dugger,
Ksenija Varga,
R. M. Bryan
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/650268
Subject(s) - lubricant , coating , chemical engineering , kinetics , curing (chemistry) , corrosion , stockpile , materials science , metallurgy , chemistry , nanotechnology , composite material , engineering , physics , quantum mechanics , nuclear physics
In support of efforts to model the performance of the MC2969 strong link for stockpile life extension, the kinetics of oxidation of the MoS{sub 2} based solid lubricant coating have been determined. The lubricant oxidation is primarily influenced by the extent of burnishing of the coating after application and curing. The activation energy for lubricant oxidation is low and agrees well with reported values for MoS{sub 2} coatings and particles. The type of substrate material and the amount of H{sub 2}O vapor present have little influence on the oxidation kinetics, but do affect the chemical species found on the surface, including sulfate species which enhance substrate corrosion. The analysis of field returned hardware shows oxidation levels within the range of those obtained throughout the oxidation study