ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
There are many manufacturing techniques to form metallic particles with certain size andproperties. The laser heating method has been successfully applied to generate metallic particleswhen a supersonic gas flow is assisting this process. The metallic target is heated, melted andvaporised and micro-particles are carried away by a gas flow stream. The high-velocity gas is usedto solidificate molten particles and to condensate the metallic vapour resulting in the formation offine particles. Several attempts were carried out for the production of metallic particles by lasersupersonic heating method, obtaining spherical micro-particles (1- 50 "m) of copper, steel, oraluminium. This work presents the application of this method to generate particles from fish bone,in order to obtain a material with a composition close to the inorganic part of the bones. A pulsedNd:YAG laser has been used to obtain calcium phosphate micro- and nanoparticles. Microparticlessize ranges from 10 to 100"m, whereas the nanoparticles have diameters as small as 2 nm. Highresolution transmission electron microscopy (HRTEM) allowed us to identify the nanoparticles aswhitlockite
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.587-588.497.pdf
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