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| Abstract No.: |
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| Title: |
Porous nanostructured hydroxyapatite coatings deposited by suspension plasma spray
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| Authors: |
Chao Zhang* / Yangzhou University, China
Yanjun Zhang / Yangzhou University, China
Jie Wang/ Yangzhou University, China
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| Abstract: |
Hydroxyapatite (HA) coatings were successfully deposited by suspension plasma spray (SPS) method on stainless steel substrates. The suspension was prepared by a wet chemical method using Ca(NO3)2 and (NH4)2HPO4 as source materials. The TEM micrographs show that the HA particles are needle-like nanowires. FE-SEM images confirm that the coatings are nanostructured. X-ray Diffraction analysis shows that the as-sprayed coatings are HA and the crystal size is estimated to be less than 30 nm. Fourier transform infrared spectroscopy and MicroRaman spectroscopy indicate the significant presence of OH- and CO32- in coatings. In addition, the effect of hydrogen flow rate in plasma forming gas on the coating properties was also studied. The SPS process proved its simplicity and reliability in fabricating porous and nanostructured HA coatings.
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