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http://dx.doi.org/10.5781/KWJS.2009.27.6.043

Microstructure Evolution of Cu-based BMG Coating during APS Process and Phase Analysis by Nano-indentation Test  

Kim, Jung-Hwan (Dept. of Mater. Sci. and Eng., Hanyang Univ.)
Kang, Ki-Cheol (Dept. of Mater. Sci. and Eng., Hanyang Univ.)
Yoon, Sang-Hoon (Dept. of Mater. Sci. and Eng., Hanyang Univ.)
Na, Hyun-Taek (Dept. of Mater. Sci. and Eng., Hanyang Univ.)
Lee, Chang-Hee (Dept. of Mater. Sci. and Eng., Hanyang Univ.)
Publication Information
Journal of Welding and Joining / v.27, no.6, 2009 , pp. 43-48 More about this Journal
Abstract
In this study, Cu-based bulk metallic glass (BMG) coatings were deposited by atmospheric plasma spraying (APS) process with different process conditions (with- and without hydrogen gas). As adding the hydrogen gas, thermal energy in the plasma flame increased and induced difference in the melting state of the Cu-based BMG particles. The microstructure and mechanical properties of the coatings were analyzed using a scanning electron microscope (SEM) with an energy dispersive spectroscopy (EDS) and nano-indentation tester in the light of phase analysis. It was elucidated by the nano-indentation tests that un-melted region was a mainly amorphous phase which showed discrete plasticity observed as the flow serrations on the load.displacement (P - h) curves, and the curves of solidified region showed lower flow serrations as amorphous phase mingled with crystalline phase. Oxides produced during the spraying process had the highest hardness value among the phases and were well mixed with other phases resulted from the increase in melting degree.
Keywords
Bulk metallic glass; Atmospheric plasma spraying; Microstructure; Nano-indentation test;
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1 J. F. L$\ddot{o}$ffler: Bulk metallic glasses, Intermetallics, 11 (2003), 529-540   DOI   ScienceOn
2 H. Choi, S. Yoon, G. Kim, H. Jo, C. Lee: Phase evolutions of bulk amorphous NiTiZrSiSn feedstock during thermal and kinetic spraying processes, Scripta Materialia, 53 (2005), 125-130   DOI   ScienceOn
3 B.G. Yoo, K.W, Lee, J.I. Jang: Instrumented indentation of a Pd-based bulk metallic glass: Constant loading-rate test vs constant strain-rate test, Juornal of Alloys and Compounds, 483 (2009), 136-138   DOI   ScienceOn
4 M.P. Planche, H. Liao, C. Coddet: Oxidation control in atmospheric plasma spraying coating, Surface & Coatings Technology, 202-1(2007), 69-76   DOI   ScienceOn
5 A. Inoue, K. Hashimoto: Bulk Amorphous Alloys, Amorphous and Nanocrystalline Materials, (2001), 1-51
6 W.H. Wang, C. Dong, C.H. Shek: Bulk metallic glasses, Materials Science and Engineering R, 44 (2004), 45–89   DOI   ScienceOn
7 M. Telford: The case for bulk metallic glass, Materials Today, 7 (2004), 36
8 H. Choi, S. Lee, B. Kim, H. Jo, C. Lee: Effect of in-flight particle oxidation on the phase evolution of HVOF NiTiZrSiSn bulk amorphous coating, Journal of Materials Science, 40 (2005) 6121-6126   DOI   ScienceOn
9 C.A. Schuh, T.G. Nieh: A survey of instrumented indentation studies on metallic glasses, Journal of Materials Research, 19-1(2004), 46-57   DOI   ScienceOn
10 Y. Huang, Y.L. Chiu, J. Shen, J.J. Chen, J. Sun: Nanoindentation study of Ti-based metallic glasses, Journal of Alloys and Compounds, 479(2009), 121-128   DOI   ScienceOn
11 T. Degitz, K. Dobler: Thermal spray basics, Welding Journal, 81-11(2002), 50-52   ScienceOn
12 A. Inoue: Stabilization of metallic supercooled liquid and bulk amorphous alloys, Acta materialia, 48 (2000), 279-306   DOI   ScienceOn
13 C.A. Schuh, T.C. Hufnagel, U. Ramamurty: Mechanical behavior of amorphous alloys, Acta Materialia, 55 (2007), 4067   DOI   ScienceOn
14 F.H. Torre, A. Dubach, J. Schallibaum, J.F. Loffler: Shear striations and deformation kinetics in highly deformed Zr-based bulk metallic glasses, Acta Materialia, 56(2008), 4635-4646   DOI   ScienceOn
15 H. Kim, K. Lim, B. Seong, C. Park: Amorphous phase formation of Zr-based alloy coating by HVOF spraying process, Journal of Materials Science, 36 (2001), 49-54   DOI   ScienceOn