Advances in Materials

Volume 10, Issue 4, December 2021

  • Vacuum-arc Nitriding of Carbon Steels Having Low Tempering Temperature

    Viacheslav Stolbovyi, Anatoliy Andreev, Iryna Serdiuk, Igor Kolodii, Anatoliy Shepelev

    Issue: Volume 10, Issue 4, December 2021
    Pages: 48-54
    Received: Sep. 02, 2021
    Accepted: Sep. 28, 2021
    Published: Oct. 29, 2021
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    Abstract: Studies have been made into a new possibility of modifying the surface of steels having a low tempering temperature by nitriding them in a vacuum-arc gas discharge followed by heat treatment (heating, quenching and tempering). Generally, nitriding of hardened steels takes place at a temperature of about 500°C, and thus this process appears impossib... Show More
  • Thermal Waters Circulation During the Formation of Ore Deposits

    Ivan Vadimovich Gordienko, Vadim Vyacheslavovich Gordienko

    Issue: Volume 10, Issue 4, December 2021
    Pages: 55-66
    Received: Sep. 28, 2021
    Accepted: Oct. 14, 2021
    Published: Oct. 29, 2021
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    Abstract: The paper analyzes processes leading to the formation of gold-bearing sulphide deposits. The study was based on the data available for the territory of Ukraine and other regions. The deposits in question are shown to be associated with post-geosynclinal activation as postulated by concepts of the advection-polymorphism hypothesis. The nature of ore... Show More
  • Microstructure and Mineralogy of Compressed Earth Bricks Incorporating Shea Butter Wastes Stabilized with Cement

    Alfred Niamien Kouamé, Léon Koffi Konan, Bi Irié Hervé Gouré Doubi

    Issue: Volume 10, Issue 4, December 2021
    Pages: 67-74
    Received: Oct. 15, 2021
    Accepted: Nov. 12, 2021
    Published: Dec. 09, 2021
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    Abstract: The current context of sustainable development encourages the development of materials with low environmental impact, which explains the renewed interest in earthen constructions. This study is therefore a contribution to the valorization of clay raw materials from Côte d'Ivoire and agro-industrial waste in eco-construction. The aims of this study ... Show More
  • Study on the Preparation of Magnetic Pine Needle Biochar and Its Adsorption Performance for the Dye

    Zhiyong Han, Dehua Wang, Jie Wu, Qingyue Xiong, Yanxia Zhang, Kaiqing Zhang

    Issue: Volume 10, Issue 4, December 2021
    Pages: 75-86
    Received: Dec. 25, 2021
    Accepted:
    Published: Dec. 29, 2021
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    Abstract: The agricultural and forestry waste pine needle was selected to prepare the biochar which magnetized by the Fe3O4 to treat the typical wastewaters of the dye methylene blue (MB) and carmine (P4R) in view of the problem of quick increasing dye wastewater caused by the rapid development of textile, printing and dyeing industries, and the research res... Show More