International Journal of Materials Science and Applications

Volume 4, Issue 1, January 2015

  • Analysis of Crack Formation in Germanium Substrate at AlInGaP Die Bonding Process

    Luruthudass Annaniah, Mutharasu Devarajan

    Issue: Volume 4, Issue 1, January 2015
    Pages: 1-7
    Received: 24 November 2014
    Accepted: 09 December 2014
    Published: 18 December 2014
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    Abstract: Cracked die is a serious failure mode in Light Emitting Diode (LED) industry – affecting the LED quality and long-term reliability performance. In this paper, an investigation has been carried out to find out a relation between die bonding force and the occurrence of die crack at Germanium (Ge) substrate due to die attach (DA) ejector pin indentati... Show More
  • Structure, Electrical Resistivity, Oxidation and Corrosion Behavior of Tin-Lead Eutectic Alloy

    E. Gouda, I. Faquhi, S. Kariri, M. Qohal, Y. Kariri

    Issue: Volume 4, Issue 1, January 2015
    Pages: 8-11
    Received: 28 November 2014
    Accepted: 22 December 2014
    Published: 20 January 2015
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    Abstract: The structure, electrical resistivity, oxidation and corrosion behaviors of the eutectic Sn-Pb alloy have been studied and analyzed using X-ray, Ohm’s law circuit, thermal gravimetric analysis (TGA) and chemical weight loss method, respectively. The results showed that, the alloy exhibited two phase mixtures of α-Pb and β-Sn. The I-V characteristic... Show More
  • Effect of the Near-Net Shape Forming on Silicon Morphology in an Al–Si Functionally Graded Material Generated by the Centrifugal Method

    Yasuyoshi Fukui, Daisaku Nara, Kazuyo Fushimi, Mitsuhiro Nakao, Noriyoshi Kumazawa

    Issue: Volume 4, Issue 1, January 2015
    Pages: 12-19
    Received: 23 December 2014
    Accepted: 08 January 2015
    Published: 20 January 2015
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    Abstract: A work toward practical usage of hypereutectic Al–25 mass% Si alloy, which exhibits superior properties, as a functionally graded material (FGM) was done. The Al–Si FGM, which is based on the concept of overcoming the limitations imposed by the presence of a hard silicon phase in an aluminum matrix, was generated by a vacuum centrifugal method as a... Show More
  • Synthesis and Characterization of the Peroxo Complexes of Uranium (VI) Containing Organic Acids and Amine Bases Ligands

    Jahanara Nasrin

    Issue: Volume 4, Issue 1, January 2015
    Pages: 20-25
    Received: 25 December 2014
    Accepted: 11 January 2015
    Published: 22 January 2015
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    Abstract: Several new peroxo complexes of U(VI) have been synthesized and characterized by element analyses and various physico-chemical techniques. A number of organic and amine ligands were used to form the complexes having compositions, [UO(O2)amH2L], where, [amH=amino acids, such as glycine, phenylalanine, leucine ; L= ligands such as pyridine, 2-picolin... Show More
  • Comparative Studies on the Metallurgical and Biological Activity of Peroxo Complexes of Molybdenum (VI) and Uranium (VI)

    Jahanara Nasrin

    Issue: Volume 4, Issue 1, January 2015
    Pages: 26-30
    Received: 25 December 2014
    Accepted: 04 January 2015
    Published: 22 January 2015
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    Abstract: New peroxo complexes of molybdenum (VI) and uranium (IV) have been prepared. The complexes were characterized on the basis of elemental analyses, conductivity measurements, magnetic measurements, infrared spectral studies and by reactions with allyl alcohol, triphenylphosphine and triphenylarsine. The complexes of U (VI) showed strong activity agai... Show More
  • Effect of Light Intensity on the I-V Characteristics of LaF3/Porous-Silicon Structure Prepared by Chemical Bath Deposition Technique

    Md. Hafijur Rahman, Abu Bakar Md. Ismail

    Issue: Volume 4, Issue 1, January 2015
    Pages: 31-34
    Received: 14 November 2014
    Accepted: 27 November 2014
    Published: 26 January 2015
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    Abstract: Effect of Light intensity on the I-V characteristics of LaF3/PS heterojunction has been investigated in this report. LaF3 layers have been deposited by a novel chemical bath deposition (CBD) technique. With this simple technique LaF3 produced as LaCl3 are made to react with hydrofluoric (HF) acid on the porous silicon substrate. This enables direct... Show More
  • AgInSe2 Thin Films Prepared by Electrodeposition Process

    Mounir Ait Aouaj, Raquel Diaz, Fouzia Cherkaoui El Moursli, Arturo Tiburcio-Silver, Mohammed Abd-Lefdil

    Issue: Volume 4, Issue 1, January 2015
    Pages: 35-38
    Received: 29 November 2014
    Accepted: 14 December 2014
    Published: 26 January 2015
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    Abstract: In this work, the one step electrodeposition process was used to prepare Ag-In-Se thin films. The films were deposited at room temperature from a bath containing 1-3x10-3 M AgNO3, 6x10-2 M InCl3 and 3x10-2 M of H2SeO3. The KSCN at a concentration of 0.681 M was used as complexing agent. The pH value of the solution was 1.4. Applied potentials to SC... Show More
  • Evaluation of Addition ABS and EPDM Effect on the Mechanical Properties of Ternary Polymer Blends

    Sihama Issa Salih, Jawad Kadhum Oleiwi, Rawaa Adnan Abdle Ameer

    Issue: Volume 4, Issue 1, January 2015
    Pages: 39-46
    Received: 30 December 2014
    Accepted: 14 January 2015
    Published: 28 January 2015
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    Abstract: Polymer blends are capable of providing materials with extended useful properties beyond the range that can be obtained from single polymer. Blends of polystyrene (PS) and polypropylene (PP) with adding acrylonitrile-butadiene-styrene (ABS) or ethylene propylene diene monomer (EPDM) are prepared in different ratios by melt blending technique which ... Show More
  • A Comparison of Shear Bond Strength of Orthodontic Brackets Bonded with Four Flowable Composites Bonded under Contamination: An Ex-Vivo Study

    Sunil Kumar M., Mahantesh C., Umesh H. M., Ashita Talwar, Sufia Qaiser, Sonal Sahasrabudhe

    Issue: Volume 4, Issue 1, January 2015
    Pages: 47-51
    Received: 19 December 2014
    Accepted: 04 January 2015
    Published: 10 February 2015
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    Abstract: Objective: To evaluate the shear bond strength of the brackets bonded with adhesive and flowable composites under contamination by human blood and human saliva& to evaluate enamel damage post debonding using ARI index. Material and Methods: 100 human premolars extracted for orthodontic reasons were used & shear bond strengths of 4 flowable composit... Show More
  • A Systematic Study on Electronic and Thermodynamical Properties of Some LiM (M= Ag, Hg and Tl) Intermetallics

    Neetu Paliwal, Vipul Srivastava

    Issue: Volume 4, Issue 1, January 2015
    Pages: 52-58
    Received: 12 January 2015
    Accepted: 29 January 2015
    Published: 10 February 2015
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    Abstract: Binary intermetallic system, Li-M (M=Ag, Hg and Tl) has been systematically evaluated and optimized using self consistent tight binding linear muffin tin orbital (TB-LMTO) method under ambient conditions. The lattice constant, bulk modulus and its pressure derivative were calculated. The lattice constants were calculated to be 3.05, 3.20 and 3.34 Å... Show More
  • Hardening and Characterisation of 0.45%C Steel Using Clay/Water Media as Quenchant

    Oghenevweta Erhuvwu Joseph, Asuke Ferdinand

    Issue: Volume 4, Issue 1, January 2015
    Pages: 59-64
    Received: 06 January 2015
    Accepted: 20 January 2015
    Published: 11 February 2015
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    Abstract: Hardening and characterization of 0.45%C steels using clay/water media as quenchants were investigated. Different weight percent of clay was added to water to form clay/water quenching media and water was equally use as the control. The steel specimens were heated to the austenizing temperature and quenched in these liquid media. The specific laten... Show More