International Journal of Materials Science and Applications

Volume 8, Issue 6, November 2019

  • Area Function for Nanoindentation at High Temperatures

    Toshiro Okawa, Ian Thomas Clark, Katsuhiko Tashiro, Hideo Honma, Kazuhiro Yoshihara, Osamu Takai

    Issue: Volume 8, Issue 6, November 2019
    Pages: 98-102
    Received: 7 October 2019
    Accepted: 24 October 2019
    Published: 31 October 2019
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    Abstract: It becomes important to measure mechanical properties of local area of materials because of downsizing of industrial materials, and the fracture of materials often starts at the nanoscale defects. Therefore, the measurement of hardness of the local area of materials is one of key technologies to develop new materials. Nanoindentation is the depth s... Show More
  • Elastic Stress Analysis of St 37 and St 70 Steels with Finite Element Method

    Semih Taskaya, Bilgin Zengin, Kursat Kaymaz, Muzaffer Askin

    Issue: Volume 8, Issue 6, November 2019
    Pages: 103-108
    Received: 11 October 2019
    Accepted: 22 October 2019
    Published: 4 November 2019
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    Abstract: The basic logic in the finite element method is to simplify and solve a complex problem. In this method, the solution region is divided into a plurality of simple, small, connected, sub-regions called finite elements. In other words, the problem which is divided into parts connected by a plurality of joint points can be easily solved. St 37 and St ... Show More
  • Novel RGO-ZnWO4-Fe3O4 Electrodes Material for Energy Storage Device Applications

    Mohamed Jaffer Sadiq, Paruthimal Kalaignan

    Issue: Volume 8, Issue 6, November 2019
    Pages: 109-113
    Received: 13 November 2019
    Accepted: 23 November 2019
    Published: 2 December 2019
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    Abstract: As the global concerns in the development of human civilization, the scientific and technological issues of energy utilization and environment protection are currently facing challenges. Nowadays, enormous energy demands of the world are mainly met by the non-renewable and environmental unfriendly fossil fuels. To replace the conventional energy pl... Show More
  • Preparation and Properties of Biosorbents on the Base of Fruit Seed Shell

    Kartel Mykola, Galysh Vita, Wang Bo, Mukalo Yevgen, Kozakevych Roman, Nikolaichuk Alina

    Issue: Volume 8, Issue 6, November 2019
    Pages: 114-119
    Received: 19 August 2019
    Published: 3 December 2019
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    Abstract: The process of obtaining of new biosorbents from apricot seed shells by oxidative-organosolvent processing in "acetic acid - hydrogen peroxide" medium has been studied. The structural and sorption properties of the materials obtained using physical and chemical methods were investigated. The effect of the reactants ratio in solution, as well as the... Show More
  • “Semiconductor” Model of the “Polymer-CNTs” Composite Strengthening

    Karachevtseva Liudmyla, Kartel Mykola, Wang Bo, Lytvynenko Oleg, Onyshchenko Volodymyr, Sementsov Yurii, Trachevskyi Viacheslav

    Issue: Volume 8, Issue 6, November 2019
    Pages: 120-126
    Received: 20 August 2019
    Published: 3 December 2019
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    Abstract: We analyzed “semiconductor” model of the “polymer-CNTs” composite strengthening at 300 K and low (0.1-0.5) wt% CNTs concentration. Carbon nanotubes are among the most anisotropic materials known and have extremely high values of Young's modulus. We investigated influence of vibration bonds on polymer crystallization and strengthening in composite f... Show More
  • Carbon-Carbon Composition “Expanded Graphite – Multiwalled Carbon Nanotubes”

    Sementsov Yurii, Grebel’na Yulia, Strelchuk Victor, Dovbeshko Galyna, Zhuravskyi Serhii, Makhno Stanislav, Wang Bo, Kartel Mykola

    Issue: Volume 8, Issue 6, November 2019
    Pages: 127-134
    Received: 20 August 2019
    Published: 9 December 2019
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    Abstract: It is given the description of expanded graphite (EG) as a cluster-assembled nanoscale system. It is shown that in the structure of EG there are both extended defects formed by the convolution of one or more graphene layers and orientation defects - disclination. The strength characteristics of EG compacted materials can be controlled by changing t... Show More
  • Modification of Specialty Rubbers by Carbon Nanomaterials

    Trachevskyi Viacheslav, Kartel Mykola, Sementsov Yurii, Zhuravskyi Serhii, Wang Bo

    Issue: Volume 8, Issue 6, November 2019
    Pages: 135-138
    Received: 20 August 2019
    Published: 9 December 2019
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    Abstract: In the elements of aviation structures of large size and low rigidity rubber thermal protective coatings are used, which do not collapse when the structure is deformed. The use of rubber for supersonic aircraft and spacecraft is limited due to high requirements for heat and frost resistance of materials, as well as to their stability under the cond... Show More