多結晶タングステン表面への一酸化窒素, 窒素及び酸素の共吸着について

抄録

The coadsorption of nitric oxide, nitrogen, and oxygen on a polycrystalline tungsten filament was studied using flash desorption mass spectroscopy. Oxygen or nitrogen does not adsorb on tungsten saturated with nitric oxide, whereas nitric oxide adsorbs on tungsten saturated with nitrogen or oxygen. The strength of the chemisorption bond between tungsten and adsorbed species becomes weaker in the order of nitric oxide, oxygen and nitrogen. When oxygen is adsorbed on the tungsten surface saturated with nitrogen, the T_p of nitrogen desorption spectrum shifted to a lower temperature.