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Corrosion Resistance of Commercial Si3N4 Bearing Balls

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Abstract:

The corrosion rate (Cr) of commercially available ball bearings made of silicon nitride (Si3N4) of high degree (HD) and standard quality (S) was measured at hydrothermal conditions in different aqueous concentrations of sulphuric acid (H2SO4) and sodium hydroxide (NaOH). The Cr magnitude for the materials diminished when increasing the acid concentration. At higher concentrations of H2SO4 (98%) the formation of SiO2 on the surface of the balls inhibited the progress of corrosion. The corrosion rate of the materials was increased when the sodium hydroxide solution concentration was increased. The surface of the materials was analyzed by means of scanning electron microscopy (SEM), while the corrosion rate was determined based on weight losses.

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Periodical:

Key Engineering Materials (Volumes 317-318)

Pages:

389-392

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.317-318.389

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Online since:

August 2006

Authors:

O. Chimal-Valencia, M.S. Corral-García, H. Kume, Yoshito Nishikawa, Mikio Iwasa, S.D. De la Torre

Keywords:

Corrosion, H2SO4, NaOH, SiO2

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] V. Medri, M. Bracisiewicz, Ruffini, A Bellosi: Corrosion Science Vol. 45 (2003), p.2525.

DOI: 10.1016/s0010-938x(03)00077-5

Google Scholar

[2] F. Monteverde, C. Mingazzini, M. Giorgi, A. Bellosi: Corrosion Science Vol. 43 (2001), p.1851.

DOI: 10.1016/s0010-938x(00)00193-1

Google Scholar

[3] K.L. Gavrilov, S.J. Bennison, K.R. Mikeska and R. Levi-Setti: Acta Mater. Vol. 47 (1999), p.4031.

DOI: 10.1016/s1359-6454(99)00263-3

Google Scholar

[4] M. Pomery and S. Hampshire: Materials Science and Engineering Vol. A109 (1989), p.389.

Google Scholar

[5] S.W. Sharkawy and A.M. El-Aslabi: Corrosion Science Vol. 40 (1998), p.1119. (aa) 150 µm 5 µm (bb) 5 µm (cc) (aa) 150 µm (bb) 5 µm (cc) 5 µm.

DOI: 10.31857/s0869-592x2723-30-7809

Google Scholar