2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 5: Composite, Ceramic, Quasi-crystals, Nanomaterials & Coatings
| Editors: | Kongoli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2014 |
| Pages: | 578 pages |
| ISBN: | 978-1-987820-07-2 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Sequential deposition of dental porcelain /Hydroxyapatite on 316L substrate by electrophoretic deposition as biomedical coating
Georgina Garcia1;1UNIVERSITY OF LA CIENEGA, Sahuayo, Mexico;
Type of Paper: Regular
Id Paper: 300
Topic: 16
Abstract:
Nowadays, there are many studies about hydroxyapatite (HA) coatings on metal substrate for biomedical application. However, one of the most important factors to be improved is the cracking of the coating as a result of thermal treatment to consolidate it. This problem is due to a difference on thermal properties between ceramic and metal.
In this work, a dental porcelain (DP) was used as intermediate thermal properties material to minimize the residual stress between HA and 316L stainless generated during sintering process. The DP and HA were deposited by electrophoretic deposition at constant voltage using organic solvents as dispersing media. The zeta potential was determined for both ceramics. The mass deposited was evaluated as function of deposition time, and the coating was sinterized at 850, 900 and 950°C. The coatings were characterized by Scanning Electron Microscopy and the adhesion strength of sintered coatings was evaluated according to ASTM F1044-87.
The result showed the coating was dense, homogenous and cracking free at the sintering temperature of 950°C. The adhesion strength under this condition was around 14.6 MPa.