INFLUENCE OF IRON AS ALLOYING ELEMENT ON CREVICE CORROSION BEHAVIOR OF TITANIUM

J Chin Soc Corr Pro

1995, Vol. 15

Issue (3): 210-216 DOI:

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INFLUENCE OF IRON AS ALLOYING ELEMENT ON CREVICE CORROSION BEHAVIOR OF TITANIUM

Liang Chenghao;Jin Shouxun(Dalian University of Technology)

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Abstract The effect of iron as alloying element on the crevice corrosion resistance of titanium was studied using immersion test,electrochemical measurement, SEM and EPMA techniques.The results indicated that the addition of iron into titanium decreased repassivation potential for crevice corrosion (ER), reduced the incubation time of crevice corrosion and increased the crevice corrosion rate. The potentiostatic tests showed that ER is in accordance with critical potential of crevice corrosion.The EPMA analysis and SEM observation showed that the intermetallic compound TiFe precipitated at intergranular boundaries in titanium.Corrosion occurred preferentially st these places and penetrated along the intergranular path to the interior.TiFe induced the crevice corrosion and promoted active active dissolution inside the crevice.

Key words: Titanium;NaCl solution;Crevice corrosion

Received: 25 June 1995

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Liang Chenghao;Jin Shouxun(Dalian University of Technology). INFLUENCE OF IRON AS ALLOYING ELEMENT ON CREVICE CORROSION BEHAVIOR OF TITANIUM. J Chin Soc Corr Pro, 1995, 15(3): 210-216.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1995/V15/I3/210

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