Mas Ayu, Hassan and Zubaidah, Zamri and Rosdi, Daud and Norizah, Redzuan and Izman, Sudin (2022) The Effect of PLA/HA Coating Thickness on Crack Formation and Corrosion Performance. In: Advanced Materials and Engineering Technologies. Advanced Structured Materials book series (STRUCTMAT), 162 . Springer, Cham, Cham, pp. 47-53. ISBN 978-3-030-92963-3 (Printed); 978-3-030-92964-0(Online)
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Abstract
Surface modification of metallic implants is often required to facilitate positive interaction between the implant and the surrounding hard tissue. In this study, a polymer-ceramic composite coating of polylactic acid/hydroxyapatite (PLA/HA) was successfully deposited on a Co–Cr–Mo alloy by the dip coating method in chloroform suspension at room temperature. The effect of various PLA/HA dipping layers was studied and the dip coating process parameters were optimized in order to obtain a homogeneous, crack free, densely packed and adhesive coating. It is found that PLA/HA-coated substrate with 3 dipping layers were denser and less crack sensitive compared to 6 dipping layers. Although it is hypothesized that a coarser coated surface helps to facilitate ingrowth of osseous tissue in human body, but current findings show opposite manners due to the fact that a higher corrosion rate was obtained. The coated substrate with 6 dipping layers also were found more profound to micro-cracks and delamination with a lower microhardness value compared to coated substrate with 3 dipping layers.
| Item Type: | Book Chapter |
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| Uncontrolled Keywords: | Co–Cr–Mo; PLA/HA coating; Biomaterial; Surface morphology; Dip coating |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TS Manufactures |
| Faculty/Division: | Institute of Postgraduate Studies Faculty of Manufacturing and Mechatronic Engineering Technology Faculty of Mechanical and Automotive Engineering Technology |
| Depositing User: | Miss. Ratna Wilis Haryati Mustapa |
| Date Deposited: | 15 Dec 2022 08:13 |
| Last Modified: | 15 Dec 2022 08:13 |
| URI: | http://umpir.ump.edu.my/id/eprint/35952 |
| Download Statistic: | View Download Statistics |
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