The Experts below are selected from a list of 258 Experts worldwide ranked by ideXlab platform

J.g. Na - One of the best experts on this subject based on the ideXlab platform.

  • Correlation between interfacial segregation and surface-energy-induced selective grain growth in 3% silicon–Iron Alloy
    Acta Materialia, 2000
    Co-Authors: K.h. Chai, J.g. Na
    Abstract:

    Abstract Effects of final reduction and interfacial segregation of sulfur on surface-energy-induced selective grain growth have been investigated in 3% silicon–Iron Alloy strips with various bulk content of sulfur. Interfacial segregation kinetics of sulfur varies with annealing atmosphere: a convex profile under vacuum or hydrogen and a gradual increase under argon. This is because the segregated sulfur evaporates or gasifies to hydrogen sulfide during final vacuum or hydrogen annealing, resulting in a sulfur-depleted zone just below the strip surface. The surface-energy-induced selective growth of a grain at time t is determined by the concentration of segregated sulfur. The selective growth rate depends on the combined effect of the segregated sulfur and the final reduction that determines the average grain size. For obtaining (110)[001] Goss texture, the final reduction should, therefore, be controlled, depending on the bulk content of sulfur which influences directly the segregation kinetics of sulfur and thus the texture development.

  • correlation between interfacial segregation and surface energy induced selective grain growth in 3 silicon Iron Alloy
    Acta Materialia, 2000
    Co-Authors: K.h. Chai, J.g. Na
    Abstract:

    Abstract Effects of final reduction and interfacial segregation of sulfur on surface-energy-induced selective grain growth have been investigated in 3% silicon–Iron Alloy strips with various bulk content of sulfur. Interfacial segregation kinetics of sulfur varies with annealing atmosphere: a convex profile under vacuum or hydrogen and a gradual increase under argon. This is because the segregated sulfur evaporates or gasifies to hydrogen sulfide during final vacuum or hydrogen annealing, resulting in a sulfur-depleted zone just below the strip surface. The surface-energy-induced selective growth of a grain at time t is determined by the concentration of segregated sulfur. The selective growth rate depends on the combined effect of the segregated sulfur and the final reduction that determines the average grain size. For obtaining (110)[001] Goss texture, the final reduction should, therefore, be controlled, depending on the bulk content of sulfur which influences directly the segregation kinetics of sulfur and thus the texture development.

K.h. Chai - One of the best experts on this subject based on the ideXlab platform.

  • Correlation between interfacial segregation and surface-energy-induced selective grain growth in 3% silicon–Iron Alloy
    Acta Materialia, 2000
    Co-Authors: K.h. Chai, J.g. Na
    Abstract:

    Abstract Effects of final reduction and interfacial segregation of sulfur on surface-energy-induced selective grain growth have been investigated in 3% silicon–Iron Alloy strips with various bulk content of sulfur. Interfacial segregation kinetics of sulfur varies with annealing atmosphere: a convex profile under vacuum or hydrogen and a gradual increase under argon. This is because the segregated sulfur evaporates or gasifies to hydrogen sulfide during final vacuum or hydrogen annealing, resulting in a sulfur-depleted zone just below the strip surface. The surface-energy-induced selective growth of a grain at time t is determined by the concentration of segregated sulfur. The selective growth rate depends on the combined effect of the segregated sulfur and the final reduction that determines the average grain size. For obtaining (110)[001] Goss texture, the final reduction should, therefore, be controlled, depending on the bulk content of sulfur which influences directly the segregation kinetics of sulfur and thus the texture development.

  • correlation between interfacial segregation and surface energy induced selective grain growth in 3 silicon Iron Alloy
    Acta Materialia, 2000
    Co-Authors: K.h. Chai, J.g. Na
    Abstract:

    Abstract Effects of final reduction and interfacial segregation of sulfur on surface-energy-induced selective grain growth have been investigated in 3% silicon–Iron Alloy strips with various bulk content of sulfur. Interfacial segregation kinetics of sulfur varies with annealing atmosphere: a convex profile under vacuum or hydrogen and a gradual increase under argon. This is because the segregated sulfur evaporates or gasifies to hydrogen sulfide during final vacuum or hydrogen annealing, resulting in a sulfur-depleted zone just below the strip surface. The surface-energy-induced selective growth of a grain at time t is determined by the concentration of segregated sulfur. The selective growth rate depends on the combined effect of the segregated sulfur and the final reduction that determines the average grain size. For obtaining (110)[001] Goss texture, the final reduction should, therefore, be controlled, depending on the bulk content of sulfur which influences directly the segregation kinetics of sulfur and thus the texture development.

S A Elnaby - One of the best experts on this subject based on the ideXlab platform.

  • electrodeposition and characterization of zinc nickel Iron Alloy from sulfate bath influence of plating bath temperature
    Journal of Solid State Electrochemistry, 2009
    Co-Authors: M M Aboukrisha, F. H. Assaf, S A Elnaby
    Abstract:

    The electrodeposition of ternary zinc–nickel–Iron Alloy was studied in acidic sulfate bath. The comparison between Zn, Ni, and Fe deposition and Zn–Ni and Zn–Ni–Fe co-deposition revealed that the remarkable inhibition of Ni and Fe deposition takes place due to the presence of Zn2+ in the plating bath. The increase in corrosion resistance of ternary deposits is not only attributed to the formation of γ-Ni2Zn11 phase but also to Iron co-deposition and formation of Iron phase. It was also found that the bath temperature has a great effect on the surface appearance and the deposit composition. The investigation was carried out using cyclic voltammetry and galvanostatic techniques for electrodeposition, while linear polarization resistance and anodic linear sweeping voltammetry techniques were used for corrosion study. Morphology and chemical composition of the deposits were characterized by means of scanning electron microscopy and atomic absorption spectroscopy.

S. A. El-naby - One of the best experts on this subject based on the ideXlab platform.

  • Electrodeposition and characterization of zinc–nickel–Iron Alloy from sulfate bath: influence of plating bath temperature
    Journal of Solid State Electrochemistry, 2009
    Co-Authors: M. M. Abou-krisha, F. H. Assaf, S. A. El-naby
    Abstract:

    The electrodeposition of ternary zinc–nickel–Iron Alloy was studied in acidic sulfate bath. The comparison between Zn, Ni, and Fe deposition and Zn–Ni and Zn–Ni–Fe co-deposition revealed that the remarkable inhibition of Ni and Fe deposition takes place due to the presence of Zn^2+ in the plating bath. The increase in corrosion resistance of ternary deposits is not only attributed to the formation of γ-Ni_2Zn_11 phase but also to Iron co-deposition and formation of Iron phase. It was also found that the bath temperature has a great effect on the surface appearance and the deposit composition. The investigation was carried out using cyclic voltammetry and galvanostatic techniques for electrodeposition, while linear polarization resistance and anodic linear sweeping voltammetry techniques were used for corrosion study. Morphology and chemical composition of the deposits were characterized by means of scanning electron microscopy and atomic absorption spectroscopy.

F. H. Assaf - One of the best experts on this subject based on the ideXlab platform.

  • Electrodeposition and characterization of zinc–nickel–Iron Alloy from sulfate bath: influence of plating bath temperature
    Journal of Solid State Electrochemistry, 2009
    Co-Authors: M. M. Abou-krisha, F. H. Assaf, S. A. El-naby
    Abstract:

    The electrodeposition of ternary zinc–nickel–Iron Alloy was studied in acidic sulfate bath. The comparison between Zn, Ni, and Fe deposition and Zn–Ni and Zn–Ni–Fe co-deposition revealed that the remarkable inhibition of Ni and Fe deposition takes place due to the presence of Zn^2+ in the plating bath. The increase in corrosion resistance of ternary deposits is not only attributed to the formation of γ-Ni_2Zn_11 phase but also to Iron co-deposition and formation of Iron phase. It was also found that the bath temperature has a great effect on the surface appearance and the deposit composition. The investigation was carried out using cyclic voltammetry and galvanostatic techniques for electrodeposition, while linear polarization resistance and anodic linear sweeping voltammetry techniques were used for corrosion study. Morphology and chemical composition of the deposits were characterized by means of scanning electron microscopy and atomic absorption spectroscopy.

  • electrodeposition and characterization of zinc nickel Iron Alloy from sulfate bath influence of plating bath temperature
    Journal of Solid State Electrochemistry, 2009
    Co-Authors: M M Aboukrisha, F. H. Assaf, S A Elnaby
    Abstract:

    The electrodeposition of ternary zinc–nickel–Iron Alloy was studied in acidic sulfate bath. The comparison between Zn, Ni, and Fe deposition and Zn–Ni and Zn–Ni–Fe co-deposition revealed that the remarkable inhibition of Ni and Fe deposition takes place due to the presence of Zn2+ in the plating bath. The increase in corrosion resistance of ternary deposits is not only attributed to the formation of γ-Ni2Zn11 phase but also to Iron co-deposition and formation of Iron phase. It was also found that the bath temperature has a great effect on the surface appearance and the deposit composition. The investigation was carried out using cyclic voltammetry and galvanostatic techniques for electrodeposition, while linear polarization resistance and anodic linear sweeping voltammetry techniques were used for corrosion study. Morphology and chemical composition of the deposits were characterized by means of scanning electron microscopy and atomic absorption spectroscopy.