The influence of tungsten on the pitting of aluminum films
- Surface Sciences Dept., Martin Marietta Lab., Baltimore, MD (US)
Many of the alloying additions responsible for the corrosion resistance of stainless steels can also be used to enhance the passivity of aluminum, provided that these elements remain in solid solution in the alloy. Passivity enhancing elements such as Cr, Mo, Ta, Zr, and W typically exhibit very low solubility limits in aluminum, below 1 atomic percent, and at these concentrations exert little influence on corrosion behavior. However, these solubility limits can be increased with a concomitant enhancement in corrosion performance if the alloys are produced using a rapid solidification process. One such process is co-sputter deposition of two metals, such as Al and W, simultaneously to form a binary alloy of W in solid solution with Al. Co-sputter deposition is routinely used to produce compound semiconductor films. The authors report on shifts in pitting potentials and on the effect of a transition element (W) on pitting resistance of Al.
- OSTI ID:
- 6724887
- Journal Information:
- Journal of the Electrochemical Society; (USA), Journal Name: Journal of the Electrochemical Society; (USA) Vol. 137:4; ISSN 0013-4651; ISSN JESOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360105* -- Metals & Alloys-- Corrosion & Erosion
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
BINARY ALLOY SYSTEMS
CHEMICAL REACTIONS
CORROSION
DISPERSIONS
FILMS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MIXTURES
MOLYBDENUM ALLOYS
PASSIVATION
PITTING CORROSION
SEMICONDUCTOR MATERIALS
SOLID SOLUTIONS
SOLUTIONS
SPUTTERING
STAINLESS STEELS
STEELS
TANTALUM ALLOYS
THIN FILMS
TUNGSTEN ADDITIONS
TUNGSTEN ALLOYS
ZIRCONIUM ALLOYS