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The corrosion resistance of pure titanium in organic acids

Paper ID Volume ID Publish Year Pages File Format Full-Text
13524 868 2001 6 PDF Available
Title
The corrosion resistance of pure titanium in organic acids
Abstract

The purpose of this study was to assess the corrosive properties of titanium at various pH values. Cast pure titanium specimens were immersed in 128 mmol/l of lactic and formic acids at pH 1.0–8.5 for 3 weeks at 37°C. The solubility, color, weight and chemical binding state of specimens were observed. Titanium dissolved in all lactic acid. The amount of dissolved titanium tended to decrease with a higher pH. In formic acid, the amount of dissolved titanium at pH 1.0 was larger than that in lactic acid at the same pH, but less than the detectable limit at pH 4.0 or higher. Significant discoloration was macroscopically observed only in formic acid at pH 2.5 and 4.0. The weight of the titanium samples immersed in lactic acid all decreased, but it was not affected by pH. In formic acid, the weight decreased at pH 1.0 and increased at pH 2.5–5.5. Thickening of the TiO2 corresponding to that showing discoloration was observed in the superficial oxide film of the titanium samples. Our results show that the corrosive properties of titanium are markedly dependent on pH in formic acid, and relatively less dependent on pH in lactic acid in which titanium is dissolvable at pH 1.0–8.5.

Keywords
Titanium; Organic acid; PH; Immersion; Corrosion
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The corrosion resistance of pure titanium in organic acids
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 22, Issue 21, November 2001, Pages 2931–2936
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us