Paper Title:
Spraying Distance and Oxidation Resistance of Electrothermal Explosion Sprayed MoSi2-Based Coatings
  Abstract

Intermetallic compound MoSi2 is useful for protective coatings against high-temperature oxidation. In this study, MoSi2-based coatings were prepared using electrothermal explosion ultra-high speed spraying methods. The spraying distance from electric exploding chamber to substrate are 5mm, 10mm, 15mm and 20mm, respectively. The microstructures, phase structures and hardness of the coatings were investigated by scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and Vickers hardness tester, respectively. The result indicates that MoSi2 primary phase is synthesized. When spraying distance is 10mm, the coatings have density microstructure, submicron grains and high microhardness. The bonding of coating-substrate is metallurgical. The oxidation resistance of Mo-Si-Al coating is higher than that of Mo-Si coating.

  Info
Periodical
Advanced Materials Research (Volumes 105-106)
Edited by
Wei Pan and Jianghong Gong
Pages
409-412
DOI
10.4028/www.scientific.net/AMR.105-106.409
Citation
S. X. Hou, Z. D. Liu, D. Y. Liu, L. P. Zhao, "Spraying Distance and Oxidation Resistance of Electrothermal Explosion Sprayed MoSi2-Based Coatings ", Advanced Materials Research, Vols. 105-106, pp. 409-412, 2010
Online since
April 2010
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Price
$32.00
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