English ESTUDO DA FASE AMORFA NA LIGA Co67Nb25B18
ESTUDO DA FASE AMORFA NA LIGA Co67Nb25B18
Abstract
Abstract: The purpose of this work is to elaborate the amorphous compound Co67Nb25B18 from elementary powders through high energy grinding. The grinding of the amorphous Co67Nb25B18 alloy was carried out for grinding times of 1, 5, 10 and 15 h. In 15 hours, the desired amorphous phase was obtained. The microstructural evolution was followed by the techniques of X-Ray Diffraction (XRD), Scanning Electron Microscopy and Energy Dispersion Spectroscopy (SEM / EDS). Experimental results show that the evolution of the amorphous phase was rapid at a speed of 300 RPM.
Keywords: High Energy Milling; Amorphous Co67Nb25B18; Amorphous Phase.
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References
[2]. WANG, W. H.; DONG, C.; SHEK, C. H. Bulk metallic glasses. Materials Science and Engineering R: Reports 44 (2-3). p. 45–90, 2004.
[3]. WU, Y.; LIN, P.; XIE, G.; HU, J.; CAO, M. Formation of amorphous and nanocrystalline phases in high velocity oxy-fuel thermally sprayed a Fe-Cr-Si-B-Mn alloy. Materials Science and Engineering A, 430 (1-2). p. 34–39, 2006.
[4]. BALLA, V. K, BANDYOPADHYAY, A. Laser processing of Fe-based bulk amorphous alloy. Surface and Coatings Technology 205(7).p. 2661–2667, 2010.
[5]. SURYANARAYANA, C. Mechanical alloying and milling. Progress in Materials Science 46, p. 01–184, 2001.
[6]. TORRES, C. S., SCHAEFFER, L. Efeito da moagem de alta energia na morfologia e compressibilidade do compósito WC-Ni. Revista Matéria15 (1). p. 087–094, 2010.
[7]. HWANG, S.J. The effect of microstructure and dispersions on the mechanical properties of NiAl produced by mechanical alloying. Journal of Metastable and Nanocrystalline Materials 7.p. 01–06, 2000.
[8]. DUN, C.; LIU, H.; SHEN, B. Enhancement of plasticity in Co–Nb–B ternary bulk metallic glasses with ultrahigh strength. Journal of Non-Crystalline Solids 358. pp. 3060–3064, 2012.
[9]. DUN,D.; LIU,H.; HOUA,L.; XUE,L.; DOU,L.; YANG,W.; ZHAO,Y.;SHEN,B. Ductile Co–Nb–B bulk metallic glass with ultrahigh strength. Journal of Non-Crystalline Solids 386. pp.121–123,2014.
[10]. AZZAZA, S.; ALLEG, S.; SUÑOL, J. J. Phase Transformation in the ball milled Fe31Co31Nb8B30 Powders. Advances in Materials Physics and Chemistry 3. p. 90–100, 2013.
[11]. CORB, B. W.; O'HANDLEY, R. C. Magnetic properties and short-range order in Co-Nb-B alloys. Physical Review B 31 (11).p.7213–7218, 1985.
[12]. ZHANG, P.; YAN, H. YAO, C.; LI, Z.; YU, Z.; XU. P. Synthesis of Fe-Ni-B-Si-Nb amorphous and crystalline composite coatings by laser cladding and remelting. Surface and Coatings Technology 206 (6).p.1229–1236, 2011.
[13]. PEKER, A.; JOHNSON, W. L. A highly processable metallic glass: Zr41.2Ti13.8Cu12.5Ni10.0Be22.5. Applied Physics Letters 63.p. 2342–2344, 1993.
[14]. INOUE, A. Stabilization of Metallic Supercooled Liquid and Bulk Amorphous Alloys. Acta Materialia 48(1). p.279–306, 2000.
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