Abstract
A facility for studying the tribological performance of materials for a wide range of conditions has been established. It provides sliding, rolling and rolling-with-controlled-slip contact conditions at temperatures from liquid nitrogen to ambient in environments from ultra-high vacuum to one atmosphere of oxygen, hydrogen and a variety of gas mixtures. Parameters such as normal and friction forces, wear, temperature and speed are monitored in real-time with a computer data acquisition system. The surface topography and chemical composition are analyzed with scanning electron microscopy (SEM), Auger electron spectroscopy (AES) and small-area multichannel X-ray photoelectron spectroscopy (XPS) incorporated in the facility. The chemical composition of the test environment and outgassed compounds from the tribomaterials are monitored with a quadrupole mass spectrometer.
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