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Microstructural investigation into calcium phosphate biomaterials by spatially resolved cathodoluminescence
Author(s) -
Götze J.,
Heimann R. B.,
Hildebrandt H.,
Gburek U.
Publication year - 2001
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/1521-4052(200102)32:2<130::aid-mawe130>3.0.co;2-z
Subject(s) - cathodoluminescence , apatite , luminescence , mineralogy , chemistry , calcite , materials science , raman spectroscopy , phosphate , calcium , analytical chemistry (journal) , nuclear chemistry , metallurgy , chromatography , optics , physics , optoelectronics , organic chemistry
From cathodoluminescence (CL) investigations of synthetic and natural calcium phosphates it can be concluded that the CL of pure synthetic apatite is mainly characterized by intrinsic luminescence, whereas the luminescence of naturally occurring apatites is frequently activated by trace elements. CL revealed internal structures within plasma‐sprayed hydroxyapatite coatings which were not discernible by SEM‐BSE imaging. However, cathodoluminescence microscopy alone can presently not be used in every case to characterize synthetic calcium phosphate biomaterials because of the dominant intrinsic blue CL emission. In the future, optimum results will likely be achieved by using a combination of CL microscopy and spectroscopy with other spatially resolved analytical methods such as SEM‐BSE, SEM‐CL or micro‐Raman spectroscopy. In the present study, different types of tetracalcium phosphate dental cements could be distinguished due to varying CL colours and CL spectra that are caused by a different content of impurity Mn. These results emphasize the advantages of spectral CL measurements for spatially resolved detection of trace elements in solids.