Trimetasphere Nanomaterials as Friction Coatings

Of significant interest to the Navy are low coefficient of friction gear coatings. Certain military platforms have a run dry requirement that covet survivability of gear coatings in lubrication-starved environments. Current material systems (e.g. black oxide coatings) do not meet the loss-of-lubricant survivability requirement and require an expensive auxiliary lubrication system. Desirable properties targeted by Luna's Trimetasphere coatings include non-line-of-sight deposition, excellent adhesion as coated and under stress, low coefficient of friction, and ability to be used on a variety of substrates. The objective of this proposal is to develop an innovative low friction coating that has the capability to continue to provide lubricity for a specified period of time, even if there is no gear fluid lubricant present. In this proposal, Luna will produce, manufacture and characterize our Trimetasphere coatings for use as low coefficient of friction gear coatings. Specifically, Luna will investigate the Trimetasphere coating composition, uniformity, and microstructure as well as assess the Trimetasphere coating physical characteristics (e.g. wear, hardness, adhesion, and thermal stability). As the phase I program progresses, Luna will solicit input from the Navy to assess and determine the applicability of developed Trimetasphere gear coatings for specified naval aircraft applications.