943 resultados para Diffusion
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"Stable Isotope Separation."
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National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.
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"February, 1968."
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Report year runs ends June 30.
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"February 15, 1956."
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"Other copies of this report may bear the number NRL-O-2982"--Page 2 of cover.
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"Papers to be presented at the ninth International Symposium on Combustion, Cornell University, August 27-September 1, 1962."
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Mode of access: Internet.
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"Contract AT-11-1-GEN-14. Bettis PLant, Pittsburgh, Pa., operated for the U. S. Atomic Energy Commission by Westinghouse Electric Corporation."
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"Contract AT-30-1-GEN-367."
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Experimental evidence is presented which proves that voids formed during diffusion in brass are heterogeneously nucleated. The nuclei appear to be oxide particles, probably ZnO. When these are removed by re-melting, voids practically do not form upon subsequent dezincification. Brass which had been freed of void nucleation catalysts exhibited a considerably reduced tendency for grain boundary cracking during creep, and increased stress-rupture life.