Virginia Tech researchers develop self-lubricating high-temperature alloys

Researchers at Virginia Tech, in collaboration with Iowa State University and Arizona State University, are developing new alloys designed to utilize oxidation as a functional lubricant. Supported by a nearly $2 million National Science Foundation grant, the four-year project aims to create metals that spontaneously generate a thin oxide layer when operating in environments between 600°C and 900°C.

Unlike traditional methods that incorporate internal lubricants like graphite or molybdenum disulfide, this approach designs the metal and its resulting surface oxide to work in tandem. The goal is to create a surface with low shear resistance that can continuously regenerate; as wear removes the oxide film, the newly exposed metal oxidizes to reconstitute the lubricating layer. This technology seeks to overcome the limitations of conventional oils and greases, which often degrade or evaporate at extreme temperatures.