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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Electrochemical Corrosion Characteristics of the Intermetallic Compound NiTi from Pure Metals

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1992, v.5 no.1, pp.97-101
Lee, Kyu Hwan
Shin, Myung Chul
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Abstract

Potentiodynamic corrosion tests were conducted to know the corrosion characteristics of the NiTi intermetallic compound composed of pure Ni and Ti in artificial saline. Tafel extrapolation and linear polarization technique show similar results. Corrosion current Icorr and corrosion rate was increased in the order of NiTi<Ti<Ni. The fact that NiTi intermetallic compound has the lowest value in Icorr imply that the galvanic cell reaction is not included in the NiTi corrosion reaction. NiTi shows the passivation behavior which is more stable than the pure Ni. but less stable than the pure Ti.

keywords
NiTi intermetallic compound, Ni, Ti, corrosion test, Tafel extrapolation, linear polarization


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