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  • Küçük Resim
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    Dispersion-strengthening effect of Cu-based Mn, Al, and Zn rich alloys
    (Elsevier Science Sa, 2004) Sari, U; Agan, S; Aksoy, I; Guven, K; Kahveci, N
    In this systematic study, dispersion-strengthening effect of the Cu-25.91Mn (wt.%), Cu-26.62Mn-8.99Al (wt.%), Cu-22.17Mn-12.32Zn (wt.%) ingot alloys have been investigated. Samples were homogenized at a high fixed temperature in different periods and cooled with different cooling rates. After processes, microanalysis of the samples were interpreted by using scanning electron microscope (SEM) and weight percentages of the elements of the occurrence phases in the samples obtained by using electron dispersion spectroscopy (EDS) technique. Additionally, some characteristic properties of the heat treated samples with different conditions of Cu-Mn, Cu-Mn-Al, Cu-Mn-Zn ingot alloys were also discussed. (C) 2003 Elsevier B.V. All rights reserved.
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    Structure of 2-{2-[3-methyl-3-(2,4,6-trimethylphenyl) cyclobutyl]-2-oxoethyl}isoindole-1,3-dione
    (Springer/Plenum Publishers, 2004) Sari, U; Yilmaz, I; Guven, K; Cukurovali, A; Aksoy, I
    2-{2-[3-Methyl- 3-(2,4,6-trimethylphenyl) cyclobutyl]-2-oxoethyl} isoindole-1,3-dione (C-24 H25NO3) was synthesized, and its crystal structure was determined by X-ray crystallographic techniques. The compound crystallizes in the triclinic space group P-1, with unit cell parameters: a = 14.109(9) Angstrom, b = 14.130( 8) Angstrom, c = 12.152( 6) Angstrom, a = 105.62( 5)degrees, beta = 113.75( 4)degrees, gamma = 98.78(5)degrees, V = 2039.8(19) Angstrom(3), D-c = 1.223 g/cm(3), and Z = 4. The crystal structure has two crystallographically independent molecules, I and II. These molecules are held together by weak intermolecular C-H ... O interactions, forming a continuous chain. The dihedral angles between the N-substituted phthalimide moiety and cyclobutane ring in molecules I and II are 60.37(14) and 68.18(18)degrees, respectively.