International Journal of Materials Science and Applications

Volume 7, Issue 5, September 2018

  • Scrutiny of Leakage Currents with Insulating Materials for Transistor Applications

    Muhammad Sana Ullah, Emadelden Fouad

    Issue: Volume 7, Issue 5, September 2018
    Pages: 167-173
    Received: 31 July 2018
    Accepted: 27 August 2018
    Published: 28 September 2018
    Abstract: Continuous reducing the size of transistor technology has enabled extraordinary improvements in the switching speed, density, functionality and cost of microprocessors. Integrated Circuit industry is pursuing Moore’s curve down to deep-nanoscale dimensions. Advanced transistor technology now faces many challenges that together result in static powe... Show More
  • Optimizing the Choice of Limestone Deposits for the Production of Portland Cement in Cameroon

    Blaise Ngwem Bayiha, Emmanuel Yamb, Jordan Valdès Sontia Metekong, Ndigui Billong, Robert Nzengwa

    Issue: Volume 7, Issue 5, September 2018
    Pages: 174-185
    Received: 22 August 2018
    Accepted: 10 September 2018
    Published: 9 October 2018
    Abstract: Despite the presence of raw materials (limestone and clay) deposits for Portland cement production, the major part of cement sold in Cameroon is from crushed imported clinker. This contributes to high cost of this material and reduction of local employment. In this study and based on existing data, a multi-criteria analysis tool was developed and a... Show More
  • Effect of Physical Properties of Pr-Nd Oxide on Its Melton Salt Electrolysis

    Wenyi Zhao, Rongrong Fan, Zhaoqiang Li, Yan Wang, Cheng Zhang, Rong Wang, Xin Guo, Yu Wang, Xuxia Zhang

    Issue: Volume 7, Issue 5, September 2018
    Pages: 186-191
    Received: 13 August 2018
    Accepted: 28 August 2018
    Published: 11 October 2018
    Abstract: Industrial Pr-Nd oxide product has different physical properties, and shows different behaviors in the process of producing Pr-Nd metal by molten salt electrolytic. To meet the specific requirements of molten salt electrolysis for the physical properties of Pr-Nd oxide, different physical properties of raw materials such as particle size, specific ... Show More
  • Dynamic Characteristics of the End-effector of a Drilling Robot for Aviation

    Ying Xu, Qianfeng Wan, Gang Lu, Benshuang Zhang

    Issue: Volume 7, Issue 5, September 2018
    Pages: 192-198
    Received: 9 December 2018
    Published: 11 December 2018
    Abstract: This study discusses the dynamic stiffness of the End-effector of a drilling robot for aircraft. In view of the requirements of automatic drilling processing for aircraft parts, based on the analysis of the working process of the automatic drilling End-effector, the End-effector of drilling unit has been employed in precision machine tools, It can ... Show More