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:
In this study, microstructure and biocompatibility of gradient bioceramic composite coatingfabricated by Wide-Band Laser Cladding is investigated. The experimental results indicate that thecoating consists of an alloyed transition layer and the bioceramic coating. The bioceramic coating ismainly comprised of HA, CaTiO3, CaO, α-TCP, β-TCP and TiO. The coral-shaped structure andshort-rod piled structure existing on the surface of coating. After the implantation of the bioceramiccoatings into dogs’ femur for 6, 12, and 24 weeks, hypersusceptibility, rejection and pathologicalchanges are not found. No fiber cyst, necrosis of bone tissue and chronic inflammation obviouslyappear through slice observation of hard tissues. The bioceramic coating with different ratios of Ca :P have different abilities to induce osteogenesis. At Ca: P=1.4 and 0.6wt.% Y2O3 (No.3 sample), thebioceramic coating is of best bioactivity and biocompatibility
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.342-343.685.pdf
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