Implantation of silicon ions into a surface layer of the Ti6A14V titanium alloy and its effect upon the corrosion resistance and structure of this layer

J. Baszkiewicz , M. Kamiiński , J. Kozubowski , Danuta Krupa , K. Gosiewska , Adam Barcz , Grzegorz Gawlik , J. Jagielski

Abstract

The effect of silicon ion implantation upon the corrosion resistance and structure of the surface layers formed during the implantation in the Ti6A14V titanium alloy was examined. The silicon doses were 0.5, 1.5, 3.0 and 4.5 × 1017Si+/cm2, and the ion beam energy was 100 keV. The corrosion resistance of the samples exposed to a 0.9\% NaCl solution at a temperature of 37 °C was measured using electrochemical methods. The structure of the surface layers formed during the implantation was examined by a transmission electron microscope (TEM). The results of the corrosion resistance examinations have shown that the unimplanted and 0.5 × 1017Si+/cm2 implanted samples undergo uniform corrosion. At higher silicon doses, the samples show pitting corrosion. The highest corrosion resistance was shown by the alloy implanted with 0.5 × 1017Si+/cm2. It has been found that, after a long-term (1200 h) exposure to a 0.9\% NaCl solution, the corrosion resistance of the samples is greater than that observed after a short-term exposure. TEM examinations have shown that, beginning from a dose of 1.5 × 1017Si+/cm2, the surface of the Ti6A14V alloy samples becomes amorphous. Heating of the 1.5 × 1017Si+/cm2 implanted samples at 200 and 500 °C does not change their structure, whereas after heating at 650 °C, the amorphous phase vanishes.
Author J. Baszkiewicz
J. Baszkiewicz,,
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, M. Kamiiński
M. Kamiiński,,
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, J. Kozubowski
J. Kozubowski,,
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, Danuta Krupa (FMSE / DSE)
Danuta Krupa,,
- Division of Surface Engineering
, K. Gosiewska
K. Gosiewska,,
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, Adam Barcz
Adam Barcz,,
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, Grzegorz Gawlik
Grzegorz Gawlik,,
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, J. Jagielski
J. Jagielski,,
-
Journal seriesJournal of Materials Science, ISSN 0022-2461, 1573-4803
Issue year2000
Vol35
No3
Pages767-775
Keywords in EnglishCharacterization and Evaluation Materials, Industrial Chemistry/Chemical Engineering, Mechanics, Polymer Sciences
DOIDOI:10.1023/A:1004721721359
URL http://link.springer.com/article/10.1023/A%3A1004721721359
Score (nominal)0
Citation count*13 (2015-05-02)
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