Densification behaviour of nanocrystalline hydroxyapatite bloceramics

被引：98

作者：

Ramesh, S. ^{[1
]}

Tan, C. Y. ^{[1
]}

Bhaduri, S. B. ^{[2
]}

Teng, W. D. ^{[3
]}

Sopyan, I.

机构：

[1] Univ Tenaga Nas, Ceram Technol Lab, Kajang 43009, Selangor, Malaysia

[2] Clemson Univ, Sch Mat Sci & Engn, Clemson, SC 29634 USA

[3] SIRIM Berhad, Ceram Technol Grp, Shah Alam 40911, Malaysia

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2008年 / 206卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

hydroxyapatite; bioceramic; sintering; mechanical properties;

D O I：

10.1016/j.jmatprotec.2007.12.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The sinterability of nanocrystalline hydroxyapatite (HA) particles by microwave sintering was compared with conventional pressureless sintering. The results revealed that microwave heating was effective in producing a useful HA body in a very short sintering cycle without disrupting the HA phase stability. The maximum hardness of 7.21GPa and 6.38GPa was obtained ford HA sintered at 1050 degrees C by the conventional method and 1150 degrees C by microwave sintering, respectively. The maximum fracture toughness measured for the microwave-sintered and conventional-sintered HA was 1.45 MPam(1/2) at 1050 degrees C and 1.22 MPam(1/2) at 1000 degrees C, respectively. Although the relative density of microwave -sintered HA was slightly lower than the conventional - sintered HA throughout the sintering regime employed, taking into account of the heating and soaking periods, the time taken by microwave sintering to achieve a relative density of 96.5% was about 3% of the time consumed for samples sintered by the conventional heating. Microwave heating was found to be an effective technique to produce a useful HA body for clinical applications without causing grain coarsening. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：221 / 230

页数：10

共 42 条

[1] Some important factors in the wet precipitation process of hydroxyapatite [J].

Afshar, A ;

Ghorbani, M ;

Ehsani, N ;

Saeri, MR ;

Sorrell, CC .

MATERIALS & DESIGN, 2003, 24 (03) :197-202

[2]

AGRAWAL DK, 1992, MATER RES SOC SYMP P, V269, P231, DOI 10.1557/PROC-269-231

[3] MECHANICAL-PROPERTIES OF SINTERED HYDROXYAPATITE FOR PROSTHETIC APPLICATIONS [J].

AKAO, M ;

AOKI, H ;

KATO, K .

JOURNAL OF MATERIALS SCIENCE, 1981, 16 (03) :809-812

[4]

AOKI H, 1987, MED PROG TECHNOL, V12, P213

[5] Mechanical and in vivo performance of hydroxyapatite implants with controlled architectures [J].

Chu, TMG ;

Orton, DG ;

Hollister, SJ ;

Feinberg, SE ;

Halloran, JW .

BIOMATERIALS, 2002, 23 (05) :1283-1293

[6]

Cullity B., 2001, Elements of X-ray Diffraction, Vthird

[7]

DEWITH G, 1981, J MATER SCI, V16, P1592, DOI 10.1007/BF02396876

[8]

Duan YR, 2002, J MATER SCI LETT, V21, P775

[9] MICROWAVE SINTERING OF HYDROXYAPATITE CERAMICS [J].

FANG, Y ;

AGRAWAL, DK ;

ROY, DM ;

ROY, R .

JOURNAL OF MATERIALS RESEARCH, 1994, 9 (01) :180-187

[10] Porous HA ceramic for bone replacement: Role of the pores and interconnections - experimental study in the rabbit [J].

Flautre, B ;

Descamps, M ;

Delecourt, C ;

Blary, MC ;

Hardouin, P .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, 2001, 12 (08) :679-682

← 1 2 3 4 5 →