Surface treatment of aluminum alloys based on wet chemical processes is subject to increasing regulations. The objective of the work described in this paper was to demonstrate the feasibility of applying a non-chemical technique to generate an aluminum oxide surface with adhesive bonding properties comparable to that generated with the traditional technique. This paper describes the use of ion beam enhanced deposition which meets the objective of this work. ...
This is the final report on Cortext Columbus Technologies' program entitled 'AC Impedance Testing of Coated Trycans', performed under Contract DAAK60-90-1301. The overall objective of the program was to evaluate the relative resistance of several candidate coatings prior to retorting to a solution containing NaCl and citric acid (simulating saline, acidic food product) at ambient temperature. An additional objective of the program was to perform an initial assessment of the ...
This is the final report on Cortest Columbus Technologies' program entitled 'AC Impedance Testing of Coated Traycans', performed under Contract DAAK60-90-1301. The overall objective of the program was to evaluate the relative resistance of several candidate coatings prior to retorting to a solution containing NaC1 and citric acid (simulating saline, acidic food product) at ambient temperature. An additional objective of the program was to perform an initial assessment of the ...
The creep-rupture properties of the HK-40, HP-50, and Nb-modified HP alloys have been characterized for use in the life assessment of fired heater tubes; equations were developed to model both the creep-deformation and stress- rupture behavior of these three alloys; these equations were formulated for use with the finite-element stress analysis methods and creep-damage accumulation calculations that are employed in computerized life assessment of fired heater tubes; the data used ...
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