International Journal of Materials Science and Applications

Volume 7, Issue 1, January 2018

  • Spectral Properties of GaS Nanoparticles Obtained by Laser Ablation

    Arif Pashayev, Aydin Ulubey, Kerim Allahverdiev, Sami Sozeri, Majda Hadzic

    Issue: Volume 7, Issue 1, January 2018
    Pages: 1-5
    Received: 14 August 2017
    Accepted: 29 August 2017
    Published: 2 January 2018
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    Abstract: Bulk single crystals of GaS were grown by Bridgman-Stockbarger method in an evacuated (10-6 Torr) quartz ampoules of optical quality. Nanoparticles of quasi 2-D GaS crystals were obtained by laser ablation (LA) technique (KrF Excimer laser at 248 nm (COHERENT COMPex 201), and characterized by: XRF, GDOES, SEM, TEM and UV-VIS absorption spectroscopy... Show More
  • Synthesis of Moderate Water-Uptake and Low Methanol Permeable Polymer Electrolyte Membrane from Functionalized Polyisoprene Impregnated Carbon Nanotubes

    Christopher A. Idibie

    Issue: Volume 7, Issue 1, January 2018
    Pages: 6-12
    Received: 16 October 2017
    Accepted: 7 December 2017
    Published: 2 January 2018
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    Abstract: The study of the synthesis of polymer electrolyte membrane exhibiting moderate water uptake and low methanol permeation for fuel cell application using functionalized polyisoprene impregnated with carbon nanotubes (CNTs) was carried out. The functionalization of the polymer with chlorosulphonic acid of different initial concentrations of 0.0013, 0.... Show More
  • Effect of Lead Additions on Microstructure and Casting Properties of AZ91 Magnesium Alloy

    Erkan Koc, Mehmet Unal, Yunus Turen, Halil Ahmet Goren, Ercan Candan

    Issue: Volume 7, Issue 1, January 2018
    Pages: 13-17
    Received: 7 November 2017
    Accepted: 24 November 2017
    Published: 2 January 2018
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    Abstract: In this study, the effect of Pb element addition varied between 0.2 - 0.4 wt.% on the microstructure and casting properties of AZ91 magnesium alloy were investigated. The microstructural results showed that as increasing Pb additions into the AZ91 alloy, the grains and the Mg17Al12 intermetallic phase becomes thinner. When examining the effect on c... Show More
  • Improvement of Adhesive Strength of Poly(tetrafluoroethylene) Plates through Oxygen Plasma Treatment and Subsequent Photografting of Methacrylic Acid

    Kazunori Yamada, Marie Tachi, Yuji Kimura

    Issue: Volume 7, Issue 1, January 2018
    Pages: 18-27
    Received: 12 September 2017
    Accepted: 26 September 2017
    Published: 5 January 2018
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    Abstract: Methacrylic acid (MAA) was grafted onto the surface of a poly(tetrafluoroethylene) (PTFE) plate by the combined use of the plasma treatment and photografting, and the adhesive strength between the MAA-grafted PTFE (PTFE-g-PMAA) plates with the same grafted amounts was investigated in relation to the location of grafting as well as the wettability a... Show More
  • Manufacturing of Ø 1,000 Grade Large Diameter Round Bloom and Development of Cost Effective Hot Forging Process Using the Round Bloom

    Hisang Chang, Jinmo Lee, Namyong Kim, Chaehun Lee, Sanghyun Heo, Sunryong Yoon, Byeong Don Joo

    Issue: Volume 7, Issue 1, January 2018
    Pages: 28-32
    Received: 1 December 2017
    Accepted: 12 December 2017
    Published: 17 January 2018
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    Abstract: Taewoong is an open die forging company, specialized in the production of hot forged and ring rolled parts. Recently, Taewoong utilized continuous casting facilities that can manufacture Ø 1,000 grade large diameter round bloom to increase competitiveness of the company. This study focuses installed continuous casting facilities and ring rolling pr... Show More