International Journal of Materials Science and Applications

Volume 4, Issue 6, November 2015

  • An Alternate Method for the Determination of the Raman Cross Sections of Optical Phonons in Uniaxial Crystals: Application to LiNbO3

    B. Mohamadou, E. Bouhari, R. Erasmus

    Issue: Volume 4, Issue 6, November 2015
    Pages: 371-378
    Received: 10 August 2015
    Accepted: 13 September 2015
    Published: 07 December 2015
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    Abstract: The present paper is devoted to the derivation of an alternate and simple method based on the rotation of the crystal in view of the determination of the Raman cross-sections of optical phonon in uniaxial and biaxial crystals. The Raman polarisability tensor whose trace remains invariant under an orthogonal transformation is established as function... Show More
  • Study the Effect of Polystyrene on Ground Tire Rubber / High Density Polyethylene Compatibility

    Zuhair J. Abdul Amer, Ali Abdul Amer Al-Zubaidi, Hiba Imad Abdul Kareem

    Issue: Volume 4, Issue 6, November 2015
    Pages: 379-384
    Received: 15 November 2015
    Accepted: 22 November 2015
    Published: 07 December 2015
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    Abstract: This paper deals with the study of properties for recycling tires toughening thermoplastic polymer. Large amounts of waste that arise daily as a result of scientific and technological progress with increasing humane consumer goods. This gave rise to the problem of the accumulation of the waste and its effect on the environment. So many researchers ... Show More
  • First-Principles Study on the Luminescence Properties of SrAl2O4: Eu2+, Dy3+

    Xiao Wu, Zhijie Li, Yufeng Zhang

    Issue: Volume 4, Issue 6, November 2015
    Pages: 385-389
    Received: 16 December 2015
    Accepted:
    Published: 17 December 2015
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    Abstract: In order to improve SrAl2O4: Eu2+, Dy3+ luminescent properties, explore Eu2+ and Dy3+ in SrAl2O4, using a plane-wave ultrasoft pseudopotential method under the density functional theory framework, were established SrAl2O4, SrAl2O4: Eu2+ and SrAl2O4: Eu2+, Dy3+ supercell model, and calculated their population numbers, band structure and density of s... Show More
  • Effect of Biofield Energy Treatment on Physical and Structural Properties of Calcium Carbide and Praseodymium Oxide

    Mahendra Kumar Trivedi, Rama Mohan Tallapragada, Alice Branton, Dahryn Trivedi, Gopal Nayak, Omprakash Latiyal, Snehasis Jana

    Issue: Volume 4, Issue 6, November 2015
    Pages: 390-395
    Received: 30 October 2015
    Accepted: 17 November 2015
    Published: 21 December 2015
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    Abstract: Calcium carbide (CaC2) is known for its wide applications in the production of acetylene and calcium cyanamide, whereas praseodymium Oxide (Pr6O11) is used in sensors and high-temperature pigments. The present study was designed to evaluate the effect of biofield energy treatment on the physical and structural properties of CaC2 and Pr6O11 powder. ... Show More
  • Effects of Impurities on the Percussion and Tensile Properties of Recycled Al-Cu-Si (Cu2Mg8Si6Al5) Alloys

    Sujana Rao Nakkanti, Kamprasad Chodagudi, Vijayakumar Chennupati, Mahesh Rayavarapu

    Issue: Volume 4, Issue 6, November 2015
    Pages: 396-402
    Received: 17 November 2015
    Accepted: 23 December 2015
    Published: 04 January 2016
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    Abstract: This paper deals with the study of Mechanical properties (Percussion resistance, Ultimate and Yield strength) of cast alloy Cu2Mg8Si6Al5. It has been developed by addition of Al-Cu-Si with 83.334% Al, 16.23% Cu and 0.165% Si. Solidification of Al-Cu-Si alloys has been realized by melting of industrial and machine shop scrap in a pit type resistance... Show More
  • Influence of the Diffusion Effect Caused by Welding Heat Input Lead to the Changes of Mechanical Properties Which Entering into the FEM Model of Cladding Tube Bending

    Jakub Horváth, Jiří Janovec, Michal Junek

    Issue: Volume 4, Issue 6, November 2015
    Pages: 403-408
    Received: 18 January 2016
    Accepted:
    Published: 20 January 2016
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    Abstract: This paper deal with redistribution of chemical elements around cladding surface of composite tube. Motivation is that change of chemical composition cause change in microstructure and mainly changes in mechanical properties. Local changes of mechanical properties can cause inaccuracy or wrong results obtained from FEM modeling of bending process o... Show More