Cathodoluminescence as a method of microstructure characterization of biphasic ceramics composed of hydroxyapatite and ß-tricalcium phosphate

被引：2
|
作者：
Diggs, AB [1 ]
Halloran, J
Hollister, SJ
机构：
[1] Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA
来源：
BIOCERAMICS 17 | 2005年 / 284-286卷
关键词：
biphasic calcium phosphate; cathodoluminescence; hydroxyapatite; microstructure; beta-tricalcium phosphate;
D O I：
10.4028/www.scientific.net/KEM.284-286.333
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This paper describes the investigation into the use of cathodoluminescence for distinguishing HA and beta-TCP phases within the biphasic calcium phosphate ceramic microstructure. Polished samples were scanned using SEM-CL at an accelerating voltage in the range of 10-15 keV with a beam current of 5-10 nA. The grayscale images produced reveal distinctive patterns for each composition. EDS and EPMA suggest chemical differences among the contrasting regions. Image analysis of voxel values indicate that areas of bright contrast correspond to beta-TCP grains with phase amounts confirmed by XRD.
引用
收藏
页码：333 / 336
页数：4
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