Nano-lamellar/nano-tubular hierarchical porous structure produced by selective dissolution and anodization of lamellar Ti-40 at.% Al alloy

Dai Xiu Wei; Yuichiro Koizumi; Huakang Bian; Yunping Li; Akihiko Chiba

doi:10.1016/j.matlet.2014.11.059

Nano-lamellar/nano-tubular hierarchical porous structure produced by selective dissolution and anodization of lamellar Ti-40 at.% Al alloy

Dai Xiu Wei, Yuichiro Koizumi, Huakang Bian, Yunping Li, Akihiko Chiba

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

A novel hierarchical nano-porous structure with laminated and tubular pores was fabricated by two step method in which selective dissolution of lamellar Ti-40 at.% Al alloy was followed by anodization. In the first step, grating structure consisting of α₂-Ti₃Al lamellae and crevasses was produced by selective dissolution of γ lamellae from the lamellar alloy. The spacing of gratings was controlled close to visible light wavelength. In the second step, the gratings were anodized and hierarchical porous structure consisting of nano-laminated crevasse and nano pores was formed. The XPS result indicates that the porous structure consists of oxide and hydroxide containing Ti and Al with a molar proportion of 1.5:1. The self-organized pores were homogeneous with a diameter of approximately 20 nm, the depth of pores is 100~200 nm. The dimensions of gratings and pores can be tuned with the combination of alloy composition and conditions of heat treatment, selective dissolution, and anodization.

Original language	English
Pages (from-to)	15-18
Number of pages	4
Journal	Materials Letters
Volume	145
DOIs	https://doi.org/10.1016/j.matlet.2014.11.059
Publication status	Published - 2015 Apr 15

Keywords

Anodization
Hierarchical structure
Laminated pore
Nanoarchitecture
Selective dissolution
Titanium aluminides

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matlet.2014.11.059

Cite this

@article{d0e6c9dc44024022a6bbfb7a38a07f7d,

title = "Nano-lamellar/nano-tubular hierarchical porous structure produced by selective dissolution and anodization of lamellar Ti-40 at.% Al alloy",

abstract = "A novel hierarchical nano-porous structure with laminated and tubular pores was fabricated by two step method in which selective dissolution of lamellar Ti-40 at.% Al alloy was followed by anodization. In the first step, grating structure consisting of α2-Ti3Al lamellae and crevasses was produced by selective dissolution of γ lamellae from the lamellar alloy. The spacing of gratings was controlled close to visible light wavelength. In the second step, the gratings were anodized and hierarchical porous structure consisting of nano-laminated crevasse and nano pores was formed. The XPS result indicates that the porous structure consists of oxide and hydroxide containing Ti and Al with a molar proportion of 1.5:1. The self-organized pores were homogeneous with a diameter of approximately 20 nm, the depth of pores is 100~200 nm. The dimensions of gratings and pores can be tuned with the combination of alloy composition and conditions of heat treatment, selective dissolution, and anodization.",

keywords = "Anodization, Hierarchical structure, Laminated pore, Nanoarchitecture, Selective dissolution, Titanium aluminides",

author = "Wei, {Dai Xiu} and Yuichiro Koizumi and Huakang Bian and Yunping Li and Akihiko Chiba",

note = "Funding Information: This work was supported by a Grant-in-Aid for Scientific Research Development from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan . Publisher Copyright: {\textcopyright} 2014 Elsevier B.V.",

year = "2015",

month = apr,

day = "15",

doi = "10.1016/j.matlet.2014.11.059",

language = "English",

volume = "145",

pages = "15--18",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

}

TY - JOUR

T1 - Nano-lamellar/nano-tubular hierarchical porous structure produced by selective dissolution and anodization of lamellar Ti-40 at.% Al alloy

AU - Wei, Dai Xiu

AU - Koizumi, Yuichiro

AU - Bian, Huakang

AU - Li, Yunping

AU - Chiba, Akihiko

N1 - Funding Information: This work was supported by a Grant-in-Aid for Scientific Research Development from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan . Publisher Copyright: © 2014 Elsevier B.V.

PY - 2015/4/15

Y1 - 2015/4/15

N2 - A novel hierarchical nano-porous structure with laminated and tubular pores was fabricated by two step method in which selective dissolution of lamellar Ti-40 at.% Al alloy was followed by anodization. In the first step, grating structure consisting of α2-Ti3Al lamellae and crevasses was produced by selective dissolution of γ lamellae from the lamellar alloy. The spacing of gratings was controlled close to visible light wavelength. In the second step, the gratings were anodized and hierarchical porous structure consisting of nano-laminated crevasse and nano pores was formed. The XPS result indicates that the porous structure consists of oxide and hydroxide containing Ti and Al with a molar proportion of 1.5:1. The self-organized pores were homogeneous with a diameter of approximately 20 nm, the depth of pores is 100~200 nm. The dimensions of gratings and pores can be tuned with the combination of alloy composition and conditions of heat treatment, selective dissolution, and anodization.

AB - A novel hierarchical nano-porous structure with laminated and tubular pores was fabricated by two step method in which selective dissolution of lamellar Ti-40 at.% Al alloy was followed by anodization. In the first step, grating structure consisting of α2-Ti3Al lamellae and crevasses was produced by selective dissolution of γ lamellae from the lamellar alloy. The spacing of gratings was controlled close to visible light wavelength. In the second step, the gratings were anodized and hierarchical porous structure consisting of nano-laminated crevasse and nano pores was formed. The XPS result indicates that the porous structure consists of oxide and hydroxide containing Ti and Al with a molar proportion of 1.5:1. The self-organized pores were homogeneous with a diameter of approximately 20 nm, the depth of pores is 100~200 nm. The dimensions of gratings and pores can be tuned with the combination of alloy composition and conditions of heat treatment, selective dissolution, and anodization.

KW - Anodization

KW - Hierarchical structure

KW - Laminated pore

KW - Nanoarchitecture

KW - Selective dissolution

KW - Titanium aluminides

UR - http://www.scopus.com/inward/record.url?scp=84922470257&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84922470257&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2014.11.059

DO - 10.1016/j.matlet.2014.11.059

M3 - Article

AN - SCOPUS:84922470257

VL - 145

SP - 15

EP - 18

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

ER -

Nano-lamellar/nano-tubular hierarchical porous structure produced by selective dissolution and anodization of lamellar Ti-40 at.% Al alloy

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this