Inductively coupled plasma processing of nano-sized calcium phosphate powders

J. L. Xu; K. A. Khor; Y. W. Gu; P. Cheang

Inductively coupled plasma processing of nano-sized calcium phosphate powders

J. L. Xu^*, K. A. Khor, Y. W. Gu, P. Cheang

^*Corresponding author for this work

Nanyang Technological University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A novel thermal plasma process, based on inductively coupled plasma torch is employed for producing nano-sized calcium phosphate powders from spray-dried hydroxyapatite (HA) feedstock. The phases during plasma process of HA feedstock under different working conditions have been studied. It is revealed that amorphous calcium phosphate is predominant in the nano-sized powders. HA, α-TCP and CaO are also detected in the nano-sized powders. After heat treatment at 800°C in air, β-Ca₂P₂O₇ (β-DCP) and HA are found to dominate in the powders. The presence of β-DCP is attributed to the HA feedstock directly decomposed into DCP in the plasma flame, and this phase formed amorphous calcium phosphates region by the rapid quenching process. This region crystallized into β-DCP after heat treatment.

Original language	English
Title of host publication	Proceedings of the International Thermal Spray Conference
Pages	843-845
Number of pages	3
Publication status	Published - 2004
Externally published	Yes
Event	Proceedings of the International Thermal Spray Conference - Osaka, Japan Duration: May 10 2004 → May 12 2004

Publication series

Name	Proceedings of the International Thermal Spray Conference

Conference

Conference	Proceedings of the International Thermal Spray Conference
Country/Territory	Japan
City	Osaka
Period	5/10/04 → 5/12/04

ASJC Scopus Subject Areas

Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Cite this

@inproceedings{94aea2fef51a4762bd5ea889b4f22fdf,

title = "Inductively coupled plasma processing of nano-sized calcium phosphate powders",

abstract = "A novel thermal plasma process, based on inductively coupled plasma torch is employed for producing nano-sized calcium phosphate powders from spray-dried hydroxyapatite (HA) feedstock. The phases during plasma process of HA feedstock under different working conditions have been studied. It is revealed that amorphous calcium phosphate is predominant in the nano-sized powders. HA, α-TCP and CaO are also detected in the nano-sized powders. After heat treatment at 800°C in air, β-Ca2P2O7 (β-DCP) and HA are found to dominate in the powders. The presence of β-DCP is attributed to the HA feedstock directly decomposed into DCP in the plasma flame, and this phase formed amorphous calcium phosphates region by the rapid quenching process. This region crystallized into β-DCP after heat treatment.",

author = "Xu, {J. L.} and Khor, {K. A.} and Gu, {Y. W.} and P. Cheang",

year = "2004",

language = "English",

isbn = "0871708094",

series = "Proceedings of the International Thermal Spray Conference",

pages = "843--845",

booktitle = "Proceedings of the International Thermal Spray Conference",

note = "Proceedings of the International Thermal Spray Conference ; Conference date: 10-05-2004 Through 12-05-2004",

}

TY - GEN

T1 - Inductively coupled plasma processing of nano-sized calcium phosphate powders

AU - Xu, J. L.

AU - Khor, K. A.

AU - Gu, Y. W.

AU - Cheang, P.

PY - 2004

Y1 - 2004

N2 - A novel thermal plasma process, based on inductively coupled plasma torch is employed for producing nano-sized calcium phosphate powders from spray-dried hydroxyapatite (HA) feedstock. The phases during plasma process of HA feedstock under different working conditions have been studied. It is revealed that amorphous calcium phosphate is predominant in the nano-sized powders. HA, α-TCP and CaO are also detected in the nano-sized powders. After heat treatment at 800°C in air, β-Ca2P2O7 (β-DCP) and HA are found to dominate in the powders. The presence of β-DCP is attributed to the HA feedstock directly decomposed into DCP in the plasma flame, and this phase formed amorphous calcium phosphates region by the rapid quenching process. This region crystallized into β-DCP after heat treatment.

AB - A novel thermal plasma process, based on inductively coupled plasma torch is employed for producing nano-sized calcium phosphate powders from spray-dried hydroxyapatite (HA) feedstock. The phases during plasma process of HA feedstock under different working conditions have been studied. It is revealed that amorphous calcium phosphate is predominant in the nano-sized powders. HA, α-TCP and CaO are also detected in the nano-sized powders. After heat treatment at 800°C in air, β-Ca2P2O7 (β-DCP) and HA are found to dominate in the powders. The presence of β-DCP is attributed to the HA feedstock directly decomposed into DCP in the plasma flame, and this phase formed amorphous calcium phosphates region by the rapid quenching process. This region crystallized into β-DCP after heat treatment.

UR - http://www.scopus.com/inward/record.url?scp=10444248826&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=10444248826&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:10444248826

SN - 0871708094

T3 - Proceedings of the International Thermal Spray Conference

SP - 843

EP - 845

BT - Proceedings of the International Thermal Spray Conference

T2 - Proceedings of the International Thermal Spray Conference

Y2 - 10 May 2004 through 12 May 2004

ER -

Inductively coupled plasma processing of nano-sized calcium phosphate powders

Abstract

Publication series

Conference

ASJC Scopus Subject Areas

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