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Hydrogen absorption behavior of beta titanium alloy in acid fluoride solutions

Paper ID Volume ID Publish Year Pages File Format Full-Text
12650 806 2004 7 PDF Available
Title
Hydrogen absorption behavior of beta titanium alloy in acid fluoride solutions
Abstract

Hydrogen absorption behavior of a beta titanium alloy in acid fluoride solutions has been analyzed by hydrogen thermal desorption. The amount of absorbed hydrogen increased with immersion time in a 2.0% acidulated phosphate fluoride (APF) solution. In the case of an immersion time of 60 h, the amount of absorbed hydrogen exceeded 10 000 mass ppm. In contrast, the amount of hydrogen absorbed in the 0.2% APF solution was several times smaller than that in the 2.0% APF solution for the same immersion time. For immersion in a 0.2% APF solution, hydrogen absorption saturated after 48 h. The surface topography and corrosion products on the surface of the specimen immersed in the 2.0% APF solution were different from those in the 0.2% APF solution. During the later stage of immersion, the amount of absorbed hydrogen markedly increased under higher applied stress, although the applied stress did not enhance hydrogen absorption during the early stage of immersion. These results of hydrogen absorption behavior are consistent with the delayed fracture characteristics of the beta titanium alloy.

Keywords
Beta titanium; Corrosion; Delayed fracture; Hydrogen embrittlement; Fluoride; Thermal desorption analysis
First Page Preview
Hydrogen absorption behavior of beta titanium alloy in acid fluoride solutions
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 25, Issue 12, May 2004, Pages 2419–2425
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering