Passivation of the Pyrotechnic Fuels Titanium and Titanium Hydride in Oxidative Environments

摘要

The chemical and physical properties that govern the performance and sensitivity of pyrotechnic materials were studied. The oxidation of Ti and TiH surface shows that electrochemical oxidation and air oxidation produce similar oxide coatings. The electrochemical process produces no extraneous results or products. There are no solvent effects on the electrochemical or surface analytical results. The first 20-50 A of Ti and TiH/sub x/ electrodes exposed to air or electrolyte solution are identical. The oxide on or near the surface would be mixed and not totally oxidized to TiO sub 2 . A full range of oxides is observed from TiO to TiC sub 2 . This observation is true for powder and bulk Ti and TiH/sub x/, as well as films. At least eight intermediate oxides are known to exist in the region between Ti sub 2 O sub 3 and TiO sub 2 . Reduced or substoichiometric titanium oxides would be semiconducting, whereas purely stoichiometric TiO sub 2 would be insulating. (ERA citation 04:003950)