of Ni-Ti-Nb based shape memory alloys①
(1. College of Materials Science and Engineering, Tianjin University,
Tianjin 300072, P.R.China;
2. Tianjin Institute of Urban Construction, Tianjin 300381, P.R.China)
摘 要: 1
关键字:
of Ni-Ti-Nb based shape memory alloys①
（1. College of Materials Science and Engineering, Tianjin University,
Tianjin 300072, P.R.China;
2. Tianjin Institute of Urban Construction, Tianjin 300381, P.R.China）
Abstract:The stability and microstructure of Ni-Ti-Nb based shape memory alloys were investigated after alloyed with elements Zr, Cr and V. In artificial seawater (3.5%NaCl) and physiological solution (5%NaCl+0.1%H2O2), the results show that the alloying elements influence the corrosion behavior of Ni-Ti-Nb alloys. Generally, Zr improves the corrosion resistance of Ni-Ti-Nb alloy, Cr reduces its corrosion resistance and V does not change the property. In order to investigate the reason of the difference,the relation of the phase components and corrosion resistance of Ni-Ti-Nb based shape memory alloys were studied by element analysis and SEM.
Key words: Ni-Ti-Nb; corrosion resistance; phase components; shape memory alloy
