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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: The Effect of Pore Structure on Corrosion Resistance of Porous Ti
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 1857-1861)
Author(s): Bo-qiong Li, Liaoning Key Materials Laboratory for Railway, School of Materials Science and Engineering,
Zhi-qiang Li, Liaoning Key Materials Laboratory for Railway, School of Materials Science and Engineering,
Xing Lu, Liaoning Key Materials Laboratory for Railway, School of Materials Science and Engineering,
Abstract: Open-pore Ti foam with porosity of <70 vol.% and average pore size of <500 μm were prepared by powder metallurgy method using polymethyl methacrylate (PMMA) as space holder. The results show that the corrosion resistance of porous Ti exhibits much higher than 316L stainless steel, and less than solid Ti in 1 M NaOH solution and 0.1 M H2SO4 solution. With increasing porosity and decreasing pore size, the corrosion resistance of porous Ti reduces. Porous Ti takes different cathodic polarization behavior from active- passive transition to spontaneously passivation in 1 M NaOH solution, while spontaneously passivation in 0.1 M H2SO4 solution.
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