MICROSTRUCTURE AND PHASE COMPOSITION OF THE Ni-Si-B-Ag-BASED PLASMA SPRAY DEPOSIT
DOI:
https://doi.org/10.7494/mafe.2016.42.2.87Keywords:
amorphous/crystalline composite, plasma spray, mid wave infra red (MWIR) camera, scanning electron microscope (SEM), X-ray diffraction (XRD).Abstract
The aim of this work is to study the possibility of obtaining an amorphous-crystalline composite starting from Ni-Si-B-based powder grade 1559-40 and silver powder. The process of plasma spray deposition was performed on a water-cooled copper substrate. The cooling rate was assessed using a mid-wave infrared MWIR camera. The microstructure of the deposit was studied using scanning electron microscope SEM with an energy dispersive spectrometer EDS. Phase identification was performed using X-ray diffraction XRD. The studies confirmed an amorphous-crystalline microstructure of the deposits. The predominant constituent of the microstructure was amorphous regions enriched in Ni, Si, and B, while the other constituent was Ag-rich crystalline inclusions identified as a face-centered cubic fcc.Downloads
References
Löffler J.F.: Bulk metallic glasses. Intermetallics, 11 (2003), 529–540
Tian L., Shan Z.-W., Ma E.: Ductile necking behavior of nanoscale metallic glasses under uniaxial tension at room temperature. Acta Materialia, 61 (2013), 4823–4830
Budhani R.C., Goel T.C., Chopra K.L.: Melt spinning for preparation of metallic glasses. Bulletin of Materials Science, 4, 5 (1982), 549–561
Borowski A., Guwer A., Gawlas-Mucha A., Babilas R., Nowosielski R.: Fabrication of Mg-based bulk metallic glasses by pressure die casting method. Indian Journal of Engineering & Materials, 21 (2014), 259–264
Zhang X., Zhang Y., Chen X., Chen G.: Bulk metallic glass rings prepared by a modified water quenching method. International Journal of Minerals, Metallurgy and Materials, 16, 1 (2009), 108–111
Kozieł T., Matusiewicz P., Kopyściański M., Zielińska-Lipiec A.: Estimation of the cooling rate in 3 mm suction-cast rods based on the microstructural features. Metallurgy and Foundry Engineering, 39, 2 (2013), 7–14
Kobayashi A., Yano S., Kimura H., Inoue A.: Fe-based metallic glass coatings produced by smart plasma spraying process. Materials Science and Engineering B, 148 (2008), 110–113
Boer F.R., Boom R., Mattens W.C.M., Miedema A.R., Niessen A.K.: Nickel. In: Boer F.R., Boom R., Mattens W.C.M., Miedema A.R., Niessen A.K.: Cohesion and structure, vol. 1: Cohesion in metals. Transition metal alloys. Elsevier Science 1988, Amsterdam, 291–322
Takeuchi A., Inoue A.: Mixing enthalpy of liquid phase calculated by Miedema’s scheme and approximated with sub-regular solution model for assessing forming ability of amorphous and glassy alloys. Intermetallics, 18 (2010), 1779–1789
