Accession Number : ADA268203


Title :   Effect of Molybdenum Ion Implantation of the Pitting Corrosion of Depleted Uranium - 0.75 Titanium Alloy


Descriptive Note : Final rept.


Corporate Author : ARMY RESEARCH LAB FORT MONMOUTH NJ


Personal Author(s) : Lei, K S ; Chang, F ; Levy, M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a268203.pdf


Report Date : Jul 1993


Pagination or Media Count : 14


Abstract : Pitting corrosion of molybdenum-ion-implanted, depleted uranium -0 75 Ti (DU -0 75 Ti) has been studied electrochemically in acidic. neutral, and alkaline solutions containing sodium chloride, and the results have been compared to those of the unimplanted DU -0 75 Ti. The data show that Mo implantation shifts the pitting potential of DU -0 75 Ti in the noble direction in acidic and alkaline solutions In neutral 50 ppm Cl- solution, however, there is no beneficial effect of Mo implantation Auger analysis studies show that before exposure to the solutions, all the molybdenum is in the oxide, which is approximately l000 A thick After electrochemical scans in the acidic and alkaline chloride solutions, most of the Mo disappears from the oxide However, no decrease in Mo concentration is found after exposure in neutral chloride solution It is proposed that the implanted molybdenum dissolves in the acidic and alkaline solutions and forms simple or complex molybdates that inhibit pitting corrosion. The implanted molybdenum does not dissolve in the neutral chloride solution and inhibition does not occur. Uranium alloys, Uranium titanium alloys, Molybdenum, Ion implantation, Corrosion, Pitting, Surface inhibition analysis. 1


Descriptors :   *DEPLETED URANIUM , *URANIUM ALLOYS , CORROSION INHIBITION , ELECTROCHEMISTRY , MOLYBDENUM , ALLOYS , ION IMPLANTATION , SURFACES , SURFACE PROPERTIES , HUMIDITY , MOLYBDATES , PITTING , METALLURGY , IMPLANTATION , TITANIUM ALLOYS , CORROSION RESISTANCE , OXIDES , CHLORIDES , SODIUM CHLORIDE , INHIBITION , BALLISTICS , AUGERS


Subject Categories : Properties of Metals and Alloys


Distribution Statement : APPROVED FOR PUBLIC RELEASE