ISSN:
1013-9826
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:
Undesirable phase and microstructure formation, and poor HAP/metal bonding strengthrestrict the fabrication technique to obtain HAP and other calcium phosphate ceramic coatings. In thispaper a bioceramic composite coating, which includes HAP andβ-Ca2P2O7, was obtained by lasercladding with pre-depositing mixed powders of CaHPO4·2H2O and CaCO3 directly on the 316Lstainless steel metal substrate. The phases, microstructure and bonding feature of the bioceramiccomposite coating are characterized by X-ray diffraction(XRD), scanning electronmicroscopy-energy dispersive spectroscopy(SEM-EDS). The microstructure of the coating consistsof minute granular HAP that is distributed among the overlapped club-shapedβ-Ca2P2O7. Uniformpresences of Ca, P and O in bioceramic composite coating supplie necessary elements for thesynthesis of HAP andβ-Ca2P2O7. Diffusions inwards of P and O into alloying layer help form thechemical metallurgical bonding and composition gradient distributions are present. a chemicalmetallurgical bonding was formed between the bioceramic composite coating and metal substrate
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.361-363.697.pdf
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