L. Yu. Fedorov, A. V. Ushakov, I. V. Karpov, E. A. Goncharova, M. V. Brungardt
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Studies on Microhardness of Composition Materials of High-Temperature Superconductor YBCO–MoO3 Nanofibers
Abstract
Superconducting polycrystalline composites YBa2Cu3O7–x + MoO3 with MoO3 nanofiber content of 1, 5, 10, and 15 wt % have been studied in the work. The temperature and width of transition into the superconducting state of samples with description of possible mechanisms for observable changes have been determined from measurements of electrical resistance. The elastic modulus, yield strength, fracture toughness, and fragility index have been determined from measurements of the Vickers microhardness. Five different models have been used during studies on the physical and mechanical properties of the MoO3-containing bulk HTSC samples to interpret microindentation data and explain the results with consideration of the indentation size effect.
期刊介绍：
Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.
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