J. Mater. Sci. Technol. ›› 2016, Vol. 32 ›› Issue (10): 1054-1058.DOI: 10.1016/j.jmst.2016.07.005

Special Issue: 铝合金专辑 2016腐蚀与防护专辑

• Orginal Article • Previous Articles     Next Articles

Comparative Study on the Corrosion Resistance of Al-Cr-Fe Alloy Containing Quasicrystals and Pure Al

Li R.T.1,K. Murugan Vinod2,Dong Z.L.2,*(),Khor K.A.1()   

  1. 1 School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
    2 School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
  • Received:2016-04-10 Accepted:2016-06-27 Online:2016-10-10 Published:2016-11-05
  • Contact: Dong Z.L.

Abstract:

Al-Cr-Fe alloy containing quasicrystals has been consolidated using spark plasma sintering (SPS). Its corrosion resistance properties were comparatively investigated with pure Al by electrochemical methods in 3.5 wt% NaCl solution. Their corrosion current density was also compared with that of three commercial steels—316 stainless steel, AISI 440C stainless steel and AISI H13 tool steel. Al-Cr-Fe alloy exhibits nobler corrosion potential and evident passivation with a potential range of around 150 mV while no passivation of pure Al sample is seen. The corrosion resistance of Al-Cr-Fe alloy is less than that of pure Al, but is close to that of 316 stainless steel and superior to that of AISI 440C stainless steel and AISI H13 tool steel.

Key words: Quasicrystal, Spark plasma sintering, Microstructure, Corrosion resistance