Fabrication of titanium scaffolds with porosity and pore size gradients by sequential freeze casting

Hyun Do Jung; Se Won Yook; Hyoun Ee Kim; Young Hag Koh

doi:10.1016/j.matlet.2009.04.012

Fabrication of titanium scaffolds with porosity and pore size gradients by sequential freeze casting

Hyun Do Jung
, Se Won Yook
, Hyoun Ee Kim
, Young Hag Koh

Biomedical Chemical Engineering

Seoul National University
Korea University

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

65 Scopus citations

Abstract

This paper reports a novel method for producing porous Ti scaffolds with a gradient in porosity and pore size using the freeze casting method, in which TiH₂/camphene slurries with various TiH₂ contents (40, 25, and 10 vol.%) were cast sequentially into a mold, followed by freeze drying and heat-treatment in a vacuum at 1300 °C for 3 h. This simple sequential freeze casting method produced good bonding between the layers with different porosities of 35, 53, and 75 vol.% obtained using the TiH₂ contents of 40, 25 and 10 vol.%, respectively. In addition, the pore size could be increased significantly by increasing the freezing time. The pore sizes obtained in the regions produced using 40, 25, and 10 vol.% TiH₂ after freezing for 7 days were 96, 166, and 270 μm, respectively.

Original language	English
Pages (from-to)	1545-1547
Number of pages	3
Journal	Materials Letters
Volume	63
Issue number	17
DOIs	https://doi.org/10.1016/j.matlet.2009.04.012
State	Published - 15 Jul 2009

Bibliographical note

Funding Information:
This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea.

Keywords

Freeze casting
Mechanical properties
Metals and alloys
Porosity
Titanium (Ti)

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10.1016/j.matlet.2009.04.012

Cite this

@article{ce9c888adb2842e2a80933602a519ed1,

title = "Fabrication of titanium scaffolds with porosity and pore size gradients by sequential freeze casting",

abstract = "This paper reports a novel method for producing porous Ti scaffolds with a gradient in porosity and pore size using the freeze casting method, in which TiH2/camphene slurries with various TiH2 contents (40, 25, and 10 vol.\%) were cast sequentially into a mold, followed by freeze drying and heat-treatment in a vacuum at 1300 °C for 3 h. This simple sequential freeze casting method produced good bonding between the layers with different porosities of 35, 53, and 75 vol.\% obtained using the TiH2 contents of 40, 25 and 10 vol.\%, respectively. In addition, the pore size could be increased significantly by increasing the freezing time. The pore sizes obtained in the regions produced using 40, 25, and 10 vol.\% TiH2 after freezing for 7 days were 96, 166, and 270 μm, respectively.",

keywords = "Freeze casting, Mechanical properties, Metals and alloys, Porosity, Titanium (Ti)",

author = "Jung, \{Hyun Do\} and Yook, \{Se Won\} and Kim, \{Hyoun Ee\} and Koh, \{Young Hag\}",

note = "Funding Information: This research was supported by a grant from the Fundamental R\&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea.",

year = "2009",

month = jul,

day = "15",

doi = "10.1016/j.matlet.2009.04.012",

language = "English",

volume = "63",

pages = "1545--1547",

journal = "Materials Letters",

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publisher = "Elsevier B.V.",

number = "17",

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TY - JOUR

T1 - Fabrication of titanium scaffolds with porosity and pore size gradients by sequential freeze casting

AU - Jung, Hyun Do

AU - Yook, Se Won

AU - Kim, Hyoun Ee

AU - Koh, Young Hag

N1 - Funding Information: This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea.

PY - 2009/7/15

Y1 - 2009/7/15

N2 - This paper reports a novel method for producing porous Ti scaffolds with a gradient in porosity and pore size using the freeze casting method, in which TiH2/camphene slurries with various TiH2 contents (40, 25, and 10 vol.%) were cast sequentially into a mold, followed by freeze drying and heat-treatment in a vacuum at 1300 °C for 3 h. This simple sequential freeze casting method produced good bonding between the layers with different porosities of 35, 53, and 75 vol.% obtained using the TiH2 contents of 40, 25 and 10 vol.%, respectively. In addition, the pore size could be increased significantly by increasing the freezing time. The pore sizes obtained in the regions produced using 40, 25, and 10 vol.% TiH2 after freezing for 7 days were 96, 166, and 270 μm, respectively.

AB - This paper reports a novel method for producing porous Ti scaffolds with a gradient in porosity and pore size using the freeze casting method, in which TiH2/camphene slurries with various TiH2 contents (40, 25, and 10 vol.%) were cast sequentially into a mold, followed by freeze drying and heat-treatment in a vacuum at 1300 °C for 3 h. This simple sequential freeze casting method produced good bonding between the layers with different porosities of 35, 53, and 75 vol.% obtained using the TiH2 contents of 40, 25 and 10 vol.%, respectively. In addition, the pore size could be increased significantly by increasing the freezing time. The pore sizes obtained in the regions produced using 40, 25, and 10 vol.% TiH2 after freezing for 7 days were 96, 166, and 270 μm, respectively.

KW - Freeze casting

KW - Mechanical properties

KW - Metals and alloys

KW - Porosity

KW - Titanium (Ti)

UR - https://www.scopus.com/pages/publications/65549118697

U2 - 10.1016/j.matlet.2009.04.012

DO - 10.1016/j.matlet.2009.04.012

M3 - Article

AN - SCOPUS:65549118697

SN - 0167-577X

VL - 63

SP - 1545

EP - 1547

JO - Materials Letters

JF - Materials Letters

IS - 17

ER -

Fabrication of titanium scaffolds with porosity and pore size gradients by sequential freeze casting

Abstract

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Keywords

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