Corrosion Resistance of Commercial Si<sub>3</sub>N<sub>4</sub> Bearing Balls-Reference-Cited by-同舟云学术

Corrosion Resistance of Commercial Si₃N₄ Bearing Balls

Published:2006-08 Issue: Volume:317-318 Page:389-392
ISSN:1662-9795
Container-title:Key Engineering Materials
language:
Short-container-title:KEM

Author:

Chimal-Valencia O.¹,Corral-García M.S.¹,Kume H.²,Nishikawa Yoshito²,Iwasa Mikio³,De la Torre S.D.⁴

Affiliation:

1. Centro de Investigación en Materiales Avanzandos (CIMAV

2. Technology Research Institute of Osaka Prefecture

3. Agency of Industrial Science and Technology

4. Centro de Investigación e Innovación Tecnológica

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.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Link

https://www.scientific.net/KEM.317-318.389.pdf

Reference5 articles.

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