Passivation method of 317L stainless steel used in medicine

Lin Zhang; Yinshun Wu; Bei Cao; Baofeng Ding

Volume 9 Issue 6

Dec. 2002

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Abstract

International Journal of Minerals, Metallurgy and Materials > 2002 > 9(6): 458-460.

Lin Zhang, Yinshun Wu, Bei Cao, and Baofeng Ding, Passivation method of 317L stainless steel used in medicine, J. Univ. Sci. Technol. Beijing , 9(2002), No. 6, pp.458-460.

Cite this article as:

Lin Zhang, Yinshun Wu, Bei Cao, and Baofeng Ding, Passivation method of 317L stainless steel used in medicine, J. Univ. Sci. Technol. Beijing , 9(2002), No. 6, pp.458-460.

Cite this article as:

Lin Zhang, Yinshun Wu, Bei Cao, and Baofeng Ding, Passivation method of 317L stainless steel used in medicine, J. Univ. Sci. Technol. Beijing , 9(2002), No. 6, pp.458-460.

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Materials

Passivation method of 317L stainless steel used in medicine

Author Affilications

Materials Science and Engineering School, University of Science & Technology of Beijing, Beijing 100083, China

Received: 16 January 2002; Available Online: 15 June 2021

Graphical Abstract

Abstract

Abstract

The electrochemical performance of 317L stainless steel used in medicine under different conditions of passivation (different contents of HNO₃ solution, different passivation time and different passivation temperatures) was studied. The results show that the pitting potential of 317L stainless steel used in medicine can reach about 1.0 V (SCE) when electrochemically tested in 0.9% NaCl solution after the steel was passivated in 30% HNO₃ solution at 35℃ for 6 h, which indicates that the passivation film has a relatively strong resistance to corrosion. The results also show that the corrosion resistance of the passivation film on the surface of 317SS can be increased after suitable amount of K₂Cr₂O₇ is added into HNO₃ passivation solution.
- 317L stainless steel,
- passivation technique,
- nitric acid,
- K₂Cr₂O₇,
- pitting potential

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