The thermodynamics of titanium corrosion in acidic systems

Vaughan, J. and Alfantazi, A. (2004). The thermodynamics of titanium corrosion in acidic systems. In: Pressure Hydrometallurgy 2004. Pressure Hydrometallurgy 2004: 34th Annual Hydrometallurgy Meeting, Banff, Alberta, Canada, (593-601). 23-27 October 2004.


Author Vaughan, J.
Alfantazi, A.
Title of paper The thermodynamics of titanium corrosion in acidic systems
Conference name Pressure Hydrometallurgy 2004: 34th Annual Hydrometallurgy Meeting
Conference location Banff, Alberta, Canada
Conference dates 23-27 October 2004
Proceedings title Pressure Hydrometallurgy 2004
Publisher Metallurgical Society (MetSoc) of the Canadian Institute of Mining, Metallurgy and Petroleum (CIM)
Publication Year 2004
Sub-type Fully published paper
Start page 593
End page 601
Total pages 8
Language eng
fre
Formatted Abstract/Summary
Recently, titanium and its alloys have been the materials of choice for the liner and internal components of autoclaves used to extract Ni and Co from laterite ores. There have been many corrosion incidents ranging from localized attacks due to scale formation or welding, to damage caused by pockets of concentrated acid. Most of the literature focuses on methods to avoid the corrosion altogether. Little has been published to increase awareness of the chemistry at these conditions. For this paper, a literature review of the thermodynamics of titanium was undertaken to decipher the slew of information available. E-pH diagrams were constructed from select data and compared with the results of  electrochemical experiments. Since nickel laterite leaching takes place in sulphuric acid, and in many cases chloride concentrations are very high, the Ti-H2O, Ti-Cl--H2O and Ti-SO4 ---H2O systems were considered.
Subjects 09 Engineering
091403 Hydrometallurgy
Keyword thermodynamics
titanium corrosion
acidic systems
Q-Index Code EX
Additional Notes SESSION 6A - HIGH-TEMPERATURE MEASUREMENTS AND THERMODYNAMICS II - Session Chair: P. TREMAINE. -- Proceeding in cdrom format only.

 
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