Fricti on-temperatur e-t im e curves were obt ained wit h th e pur e metals cobalt , nickel and iron sliding against t hemselv es in v arious gases at temp eratures to 1400 F. I n general, the fricti onal behavi or confirmed t hat of earlier wo rk w here th e atm osph ere was not as rigidly controlled. Th e friction of cobalt app ears to be controlled by tw o processes; at high tem perat ures it is oxidati on cont rolled ; at low temp eratures th e friction is low. Thi s is attributed to absorption of gases on cobalt or cobalt oxide or the inh erent effect ive sliding of th e cobalt-cobalt com bination . I ron oxide film s we re found to be very durabl e at th e temp eratur e at w hich th ey were formed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.