Effect of crystallization on the surface area of porous Ni-based metallic glass foams

J. S. Kim; M. H. Lee; S. Yi; Daniel J. Sordelet; U. K̈uhn; J. Eckert

doi:10.1080/09500839.2011.597787

Effect of crystallization on the surface area of porous Ni-based metallic glass foams

J. S. Kim, M. H. Lee, S. Yi, Daniel J. Sordelet, U. K̈uhn, J. Eckert

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

9 Scopus citations

Abstract

The change of the specific surface area in porous Ni₅₉Zr ₂₀Ti₁₆Si₂Sn₃ metallic glass (MG) upon partial crystallization was investigated. The observed increase in the surface area of the annealed Ni-based MG foams is due to the formation of homogeneously distributed Ni₁₀(Zr,Ti)₇ rod-shape intermetallic phases with nominal diameters around 250 nm and ∼800 nm length on the surface of MG struts during the crystallization. For longer annealing, the specific surface area decreases again due to a change of the morphology of the crystals from rod-like to disc-like appearance, thus suggesting an optimum regime for increasing the specific surface area upon isothermal annealing at a given temperature.

Original language	English
Pages (from-to)	582-590
Number of pages	9
Journal	Philosophical Magazine Letters
Volume	91
Issue number	9
DOIs	https://doi.org/10.1080/09500839.2011.597787
State	Published - Sep 2011

Keywords

crystallization
foams
intermetallics
metallic glasses
metastable phases
porous media
powder metallurgy
rapidly solidified materials

Access to Document

10.1080/09500839.2011.597787

Cite this

@article{0cc1c8ff367044fdbc64f6319d887ff1,

title = "Effect of crystallization on the surface area of porous Ni-based metallic glass foams",

abstract = "The change of the specific surface area in porous Ni59Zr 20Ti16Si2Sn3 metallic glass (MG) upon partial crystallization was investigated. The observed increase in the surface area of the annealed Ni-based MG foams is due to the formation of homogeneously distributed Ni10(Zr,Ti)7 rod-shape intermetallic phases with nominal diameters around 250 nm and ∼800 nm length on the surface of MG struts during the crystallization. For longer annealing, the specific surface area decreases again due to a change of the morphology of the crystals from rod-like to disc-like appearance, thus suggesting an optimum regime for increasing the specific surface area upon isothermal annealing at a given temperature.",

keywords = "crystallization, foams, intermetallics, metallic glasses, metastable phases, porous media, powder metallurgy, rapidly solidified materials",

author = "Kim, {J. S.} and Lee, {M. H.} and S. Yi and Sordelet, {Daniel J.} and U. {\"K}uhn and J. Eckert",

year = "2011",

month = sep,

doi = "10.1080/09500839.2011.597787",

language = "English",

volume = "91",

pages = "582--590",

journal = "Philosophical Magazine Letters",

issn = "0950-0839",

publisher = "Taylor and Francis Ltd.",

number = "9",

}

TY - JOUR

T1 - Effect of crystallization on the surface area of porous Ni-based metallic glass foams

AU - Kim, J. S.

AU - Lee, M. H.

AU - Yi, S.

AU - Sordelet, Daniel J.

AU - K̈uhn, U.

AU - Eckert, J.

PY - 2011/9

Y1 - 2011/9

N2 - The change of the specific surface area in porous Ni59Zr 20Ti16Si2Sn3 metallic glass (MG) upon partial crystallization was investigated. The observed increase in the surface area of the annealed Ni-based MG foams is due to the formation of homogeneously distributed Ni10(Zr,Ti)7 rod-shape intermetallic phases with nominal diameters around 250 nm and ∼800 nm length on the surface of MG struts during the crystallization. For longer annealing, the specific surface area decreases again due to a change of the morphology of the crystals from rod-like to disc-like appearance, thus suggesting an optimum regime for increasing the specific surface area upon isothermal annealing at a given temperature.

AB - The change of the specific surface area in porous Ni59Zr 20Ti16Si2Sn3 metallic glass (MG) upon partial crystallization was investigated. The observed increase in the surface area of the annealed Ni-based MG foams is due to the formation of homogeneously distributed Ni10(Zr,Ti)7 rod-shape intermetallic phases with nominal diameters around 250 nm and ∼800 nm length on the surface of MG struts during the crystallization. For longer annealing, the specific surface area decreases again due to a change of the morphology of the crystals from rod-like to disc-like appearance, thus suggesting an optimum regime for increasing the specific surface area upon isothermal annealing at a given temperature.

KW - crystallization

KW - foams

KW - intermetallics

KW - metallic glasses

KW - metastable phases

KW - porous media

KW - powder metallurgy

KW - rapidly solidified materials

UR - http://www.scopus.com/inward/record.url?scp=80052331727&partnerID=8YFLogxK

U2 - 10.1080/09500839.2011.597787

DO - 10.1080/09500839.2011.597787

M3 - Article

AN - SCOPUS:80052331727

SN - 0950-0839

VL - 91

SP - 582

EP - 590

JO - Philosophical Magazine Letters

JF - Philosophical Magazine Letters

IS - 9

ER -

Effect of crystallization on the surface area of porous Ni-based metallic glass foams

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this