Abstract
An alloy of Fe-10Cr-13P-7C was thermally sprayed by three different processes: (1) 80 kW low-pressure plasma spraying (LPPS), (2) high-velocity oxyfuel (HVOF) spraying, and (3) 250 kW high-energy plasma spraying (HPS). The as-sprayed coating obtained by the LPPS process was composed of an amorphous phase. In contrast, the as-sprayed coatings obtained by the HVOF and HPS processes were a mixture of amorphous and crystalline phases. The as-sprayed coatings showed a high hardness of 700 DPN. A very fine structure composed of ferrite, carbide, and phosphide was formed, producing a maximum hardness of greater than 1000 DPN in the LPPS coating just after crystallization on tempering. The corrosion re-sistance of the amorphous coating was superior to a SUS316L stainless steel coating in 1N H2SO4 solution and 1N HC1 solution. Furthermore, the amorphous coating underwent neither general nor pitting corro sion in1NUCI solution and 6% FeCl3 6H2O solution containing 0.05N HCl, whereas the SUS316L stain less steel coating was attacked aggressively.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M. Naka, K. Hashimoto, and T. Masumoto, Corrosion Resistivity of Amorphous Iron Alloys Containing Chromium,J. Jpn. Inst. Met., Vol 38,1974, p 835–841 (in Japanese)
K. Hashimoto, K. Osada, T. Masumoto, and S. Shimodaira, Characteristics of Passivity of Extremely Corrosion-Resistant Amorphous Iron Alloys,Corros. Sci., Vol 16, 1976, p 71–76
M. Naka, K. Hashimoto, and T. Masumoto, Effect of Heat Treatment on Corrosion Behavior of Amorphous Fe-Cr-P-C and Fe-Ni-Cr-P-B Alloys in 1N HC1,Corrosion, Vol 36,1980, p 679–686
H. Habazaki, A. Kawashima, K. Asami, and K. Hashimoto, The Effect of Tungsten on the Corrosion Behavior of Amorphous Fe-Cr-W-P-C Alloys in 1M HCI, J. Electrochem. Soc, Vol 138,1991,p76–81
H. Habazaki, A. Kawashima, K. Asami, and K. Hashimoto, The Corrosion Behavior of Amorphous Fe-Cr-Mo-P-C and Fe-Cr-W-P-C Alloys in 6 MHC1 Solution,Corros. Sci. Vol 33, 1992, p 225–236
K. Kishitake, H. Era, and F. Otsubo, Enhancement of Hardness by Heat Treatment in Rapidly Solidified High-Carbon Iron Alloys,Scr. Metall. Mater., Vol 24, 1990, p 1269–1273
K. Kishitake, H. Era, F. Otsubo, P. Li, and N. Wakayama, Tempering Behavior of Rapidly Solidified Eutectic High-Carbon Fe-Cr-Mo-B Alloys,J. Jpn. Foundrymen’sSoc, Vol 65,1993,p 468–473 (in Japanese)
K. Kishitake, H. Era, F. Otsubo, and T. Hasegawa, Effect of C/B Ratio on Crystallization and Hardness of Eutectic Fe-Cr-Mo Amorphous Alloys,J. Jpn. Foundrymen ’s Soc, Vol 67,1995, p 613–618 (in Japanese)
K. Kishitake, H. Era, and F. Otsubo, Characterization of Plasma- Sprayed Fe-lOCr-lOMo-(CB) Amorphous Coatings,J. Therm. Spray Technol, Vol 5, p 145–153
K. Kishitake, H. Era, and F. Otsubo, Characterization of Plasma-Sprayed Fe-17Cr-38Mo-4C Amorphous Coatings Crystallizing at Extremely High Temperature,J. Therm. Spray TechnoL, Vol 5, p 283–288
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kishitake, K., Era, H. & Otsubo, F. Thermal-sprayed Fe-10CM3P-7C amorphous coatings possessing excellent corrosion resistance. JTST 5, 476–482 (1996). https://doi.org/10.1007/BF02645279
Issue Date:
DOI: https://doi.org/10.1007/BF02645279