Français
10. Galvanic corrosion
Titanium is passive in water and, when coupled with most metals, will cause them to corrode. The ratio between the respective surface areas of the two materials will be important for the speed of corrosion: if titanium has a large surface area, corrosion of the second material will be rapid, as the anodic current density will be high. As titanium acts as a cathode, hydrogen may be released. If the temperature exceeds 77°C, this hydrogen can diffuse and cause the titanium to become brittle through hydride precipitation. To avoid any problems, it is advisable to use a single material, or to have electrical insulation between the titanium and the other material.
In seawater, materials with a higher corrosion potential than titanium are the Ni-Cr-Mo alloy, platinum and carbon; in these cases, titanium will corrode.
The use of composite materials...
The Ultimate Scientific and Technical Reference
This article is included in
Corrosion - Aging
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Galvanic corrosion
Special environments
Bibliography
Events
International Titanium Conference
Held every 4 years (World Conference on Titanium)
Norms and standards (non-exhaustive list)
- Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate - ASTM B265-11 -
- Standard Specification for Titanium and Titanium Alloy Bars and Billets - ASTM B348-11 -
- Standard Specification for Seamless and Welded Titanium and Titanium Alloy Tubes for Condensers and Heat Exchangers - ASTM B338-10 e1 -
- Standard Specification for Titanium and Titanium Alloy...
Directory
Organizations – Federations – Associations (non-exhaustive list)
French Titanium Association http://www.titane.asso.fr
Titanium Information Group (GB) http://www.titaniuminfogroup.co.uk
International Titanium Association...
Statistical and economic data
Publication by Pierre-François Louvigné DGA and annual presentation at the Journées Technologiques du Titane, organized by the French Titanium Association.
The Ultimate Scientific and Technical Reference
