Electric current assisted microstructure evolution of bioceramic materials: Intragranular pore containing bulk hydroxyapatites

Seungchan Cho; Rin Okayasu; Keiko Kikuchi; Moonhee Choi; Jehong Park; Ilguk Jo; Sang Bok Lee; Hansang Kwon; Yangdo Kim; Takamichi Miyazaki; Akira Kawasaki

doi:10.1016/j.scriptamat.2018.09.020

Electric current assisted microstructure evolution of bioceramic materials: Intragranular pore containing bulk hydroxyapatites

Seungchan Cho, Rin Okayasu, Keiko Kikuchi, Moonhee Choi, Jehong Park, Ilguk Jo, Sang Bok Lee, Hansang Kwon, Yangdo Kim, Takamichi Miyazaki, Akira Kawasaki

ENG - Materials Processing

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

3 Citations (Scopus)

Abstract

We successfully fabricated a controllable intragranular pore containing hydroxyapatite (HA) by the combination of an electric current assisted sintering and pre-heat treatment process. The microstructure and mechanical properties of the sintered HA bulk with and without intragranular pores were investigated in this study. Fully densified HA fabricated by the combination of an electric assisted sintering and pre-heat treatment process showed extremely superior mechanical properties. Meanwhile, hierarchically structured porous HA consisting of nanosized intragranular pores without macropores in the grain boundary showed dramatically decreased elastic modulus by different fracture mechanism compared with fully densified HA.

Original language	English
Pages (from-to)	80-84
Number of pages	5
Journal	Scripta Materialia
Volume	159
DOIs	https://doi.org/10.1016/j.scriptamat.2018.09.020
Publication status	Published - 2019 Jan 15

Keywords

Dehydroxylation
Electric current
Hydroxyapatite
Intragranular pores
Sintering

ASJC Scopus subject areas

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

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10.1016/j.scriptamat.2018.09.020

Cite this

@article{62cee28eb20a421598f5fd7cebde825c,

title = "Electric current assisted microstructure evolution of bioceramic materials: Intragranular pore containing bulk hydroxyapatites",

abstract = "We successfully fabricated a controllable intragranular pore containing hydroxyapatite (HA) by the combination of an electric current assisted sintering and pre-heat treatment process. The microstructure and mechanical properties of the sintered HA bulk with and without intragranular pores were investigated in this study. Fully densified HA fabricated by the combination of an electric assisted sintering and pre-heat treatment process showed extremely superior mechanical properties. Meanwhile, hierarchically structured porous HA consisting of nanosized intragranular pores without macropores in the grain boundary showed dramatically decreased elastic modulus by different fracture mechanism compared with fully densified HA.",

keywords = "Dehydroxylation, Electric current, Hydroxyapatite, Intragranular pores, Sintering",

author = "Seungchan Cho and Rin Okayasu and Keiko Kikuchi and Moonhee Choi and Jehong Park and Ilguk Jo and Lee, {Sang Bok} and Hansang Kwon and Yangdo Kim and Takamichi Miyazaki and Akira Kawasaki",

note = "Funding Information: This study was financially supported by the Fundamental Research Program ( PNK5860 ) of the Korea Institute of Materials Science (KIMS). Publisher Copyright: {\textcopyright} 2018",

year = "2019",

month = jan,

day = "15",

doi = "10.1016/j.scriptamat.2018.09.020",

language = "English",

volume = "159",

pages = "80--84",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Electric current assisted microstructure evolution of bioceramic materials

T2 - Intragranular pore containing bulk hydroxyapatites

AU - Cho, Seungchan

AU - Okayasu, Rin

AU - Kikuchi, Keiko

AU - Choi, Moonhee

AU - Park, Jehong

AU - Jo, Ilguk

AU - Lee, Sang Bok

AU - Kwon, Hansang

AU - Kim, Yangdo

AU - Miyazaki, Takamichi

AU - Kawasaki, Akira

PY - 2019/1/15

Y1 - 2019/1/15

N2 - We successfully fabricated a controllable intragranular pore containing hydroxyapatite (HA) by the combination of an electric current assisted sintering and pre-heat treatment process. The microstructure and mechanical properties of the sintered HA bulk with and without intragranular pores were investigated in this study. Fully densified HA fabricated by the combination of an electric assisted sintering and pre-heat treatment process showed extremely superior mechanical properties. Meanwhile, hierarchically structured porous HA consisting of nanosized intragranular pores without macropores in the grain boundary showed dramatically decreased elastic modulus by different fracture mechanism compared with fully densified HA.

AB - We successfully fabricated a controllable intragranular pore containing hydroxyapatite (HA) by the combination of an electric current assisted sintering and pre-heat treatment process. The microstructure and mechanical properties of the sintered HA bulk with and without intragranular pores were investigated in this study. Fully densified HA fabricated by the combination of an electric assisted sintering and pre-heat treatment process showed extremely superior mechanical properties. Meanwhile, hierarchically structured porous HA consisting of nanosized intragranular pores without macropores in the grain boundary showed dramatically decreased elastic modulus by different fracture mechanism compared with fully densified HA.

KW - Dehydroxylation

KW - Electric current

KW - Hydroxyapatite

KW - Intragranular pores

KW - Sintering

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U2 - 10.1016/j.scriptamat.2018.09.020

DO - 10.1016/j.scriptamat.2018.09.020

M3 - Article

AN - SCOPUS:85053389492

SN - 1359-6462

VL - 159

SP - 80

EP - 84

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Electric current assisted microstructure evolution of bioceramic materials: Intragranular pore containing bulk hydroxyapatites

Abstract

Keywords

ASJC Scopus subject areas

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