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Sealing of Holes in Aluminum Sheet by Oxidation

Description: Aluminum oxide occupies a larger volume than the aluminum it contains would fill as metal, consequently, the assumption has been made that holes in metallic aluminum would close by a sufficient amount of oxidation. Therefore, we were asked to investigate the rate of plug formation under conditions to be expected in the pile. For the latter we were requested to approach the pile conditions as nearly as we could by employing the Chicago cyclotron. It seems to us that the problem divides itself in… more
Date: July 15, 1944
Creator: Anderson, S. & Goldowski, N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Extrusion of Compound Tubes of Aluminum and B4C

Description: Various experimenters have shown (H.H. Gersman U.S. Patent 2,335,590, Nov. 30, 1943; Aluminum Co. of America, various technical papers; also CT-482) that when a billet is extruded by proper technique into a rod (or tube by a floating mandril) that flow of material is streamline and and the extruded article is essentially a space replica of the billet, with linearly distorted coordinates. Advantage is taken of this fact in the manufacture of alclad tubing in which a billet containing an inner co… more
Date: July 1, 1944
Creator: Creutz, E. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Stopping Power of Metals

Description: Summary. The effect of the conduction electrons on the stopping power of metals has been considered from two essentially different points of view. No numerical calculations have been carried out, because we have found no completely satisfactory was of computing Z'e, the effective charge on the moving ion. A rather crude estimate made on the basis of the Thomas-Fermi atomic model indicates that Z'2/E is roughly constant. Using this relation one finds that the stopping power of the conduction ele… more
Date: July 2, 1945
Creator: Goldberger, Marvin L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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