Nanoporous titanium obtained from a spinodally decomposed Ti alloy

Author(s)

Panagiotopoulos, N. T. ^{[1, 2, 3]} ; Jorge, A. Moreira ^{[1, 2]} ; Rebai, I. ^[1] ; Georgarakis, K. ^{[1, 3]} ; Botta, W. J. ^{[1, 2]} ; Yavari, A. R. ^{[1, 2, 3]}

Affiliation

^[1] Grenoble Univ, Inst Polytech, CNRS UMR 5266, SIMaP, BP 75, F-38402 St Martin Dheres - France

^[2] Univ Fed Sao Carlos UFSCar, DEMa, BR-13565905 Sao Carlos, SP - Brazil

^[3] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577 - Japan

• Document type: Journal article
• Source: Microporous and Mesoporous Materials; v. 222, p. 23-26, MAR 1 2016.
• Web of Science Citations: 7

Abstract

Porous noble metal surfaces were produced by gold-smiths in ancient times by dealloying. These processes lead to the formation of gold or other noble metal rich layers. Such dealloying occurs by corrosion as the most electro-chemically active elements dissolve and the more noble elements aggregate into clusters by phase separation (spinodal decomposition). Here we report results from an alternative path to nanoporosity where the structure patterns and length scales are first fixed in the bulk by high temperature spinodal decomposition followed by chemical dissolution of one of the component products of the phase-separation. The process may be used to form nanoporous titanium for biochemical applications. (C) 2015 Elsevier Inc. All rights reserved. (AU)

• FAPESP's process: 12/13179-6 - Study of amorphous, metastable and nano-structured metallic alloys with emphasis on new technological applications
• Grantee: Alberto Moreira Jorge Junior
• Support Opportunities: Scholarships abroad - Research