Corrosion and abrasive wear behaviour of laser consolidated plasma sprayed SiC coating on Fe-15Cr-25Ni alloy

S. C. Tjong; K. C. Lau; J. S. Ku; N. J. Ho

doi:10.1179/026708499101516902

Author(s)

S. C. Tjong
K. C. Lau
J. S. Ku
N. J. Ho

Detail(s)

Original language	English
Pages (from-to)	490-494
Journal / Publication	Surface Engineering
Volume	15
Issue number	6
Publication status	Published - 1999

Link(s)

DOI	DOI https://doi.org/10.1179/026708499101516902 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-0033357122&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(2e99a3f4-8808-45e7-9978-7ffc7812117c).html

Abstract

Silicon carbide powders (75 μm) were plasma sprayed on austenitic Fe-15Cr-25Ni alloy. A continuous wave CO₂ laser was used to consolidate the plasma sprayed layer and to decompose SiC particles during glazing. Optical and scanning electron microscopic techniques revealed that the structure of the laser consolidated layer consisted of cellular dendrites with M₇C₃ carbides dispersed mainly at the dendritic boundaries. Consequently, the surface hardness of the Fe-15Cr-25Ni alloy improved considerably. Abrasive wear tests showed that the laser modified specimen exhibited lower wear mass loss and a lower coefficient of friction than the raw Fe-15Cr-25Ni alloy. Potentiodynamic and cyclic polarization behaviour of the laser modified and raw Fe-15Cr-25Ni alloy specimens in 0.5 M H₂SO₄ and 0.5 M NaCl solutions was also investigated.

Citation Format(s)

[ RIS ] [ BibTeX ]

Corrosion and abrasive wear behaviour of laser consolidated plasma sprayed SiC coating on Fe-15Cr-25Ni alloy. / Tjong, S. C.; Lau, K. C.; Ku, J. S.; Ho, N. J.

In: Surface Engineering, Vol. 15, No. 6, 1999, p. 490-494.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Tjong, SC, Lau, KC, Ku, JS & Ho, NJ 1999, 'Corrosion and abrasive wear behaviour of laser consolidated plasma sprayed SiC coating on Fe-15Cr-25Ni alloy', Surface Engineering, vol. 15, no. 6, pp. 490-494. https://doi.org/10.1179/026708499101516902

Tjong, S. C., Lau, K. C., Ku, J. S., & Ho, N. J. (1999). Corrosion and abrasive wear behaviour of laser consolidated plasma sprayed SiC coating on Fe-15Cr-25Ni alloy. Surface Engineering, 15(6), 490-494. https://doi.org/10.1179/026708499101516902

Tjong SC, Lau KC, Ku JS, Ho NJ. Corrosion and abrasive wear behaviour of laser consolidated plasma sprayed SiC coating on Fe-15Cr-25Ni alloy. Surface Engineering. 1999;15(6):490-494. https://doi.org/10.1179/026708499101516902

Tjong, S. C. ; Lau, K. C. ; Ku, J. S. ; Ho, N. J. / Corrosion and abrasive wear behaviour of laser consolidated plasma sprayed SiC coating on Fe-15Cr-25Ni alloy. In: Surface Engineering. 1999 ; Vol. 15, No. 6. pp. 490-494.