Corrosion Performance of Nitrided Based Coating On AZ9I Mg Alloy In Hank's Solution

MR Zulkifli, M Zaimi, J Mohd Juoi… - Materials Science …, 2015 - Trans Tech Publ
Materials Science Forum, 2015Trans Tech Publ
The use of Magnesium alloys as bioresorsable metallic implant is interesting to study due to
the properties of magnesium ions which can be found naturally in bone tissue as well as are
essential to human metabolism. However, its fast degradation rate and excess of these ions
in the body may cause undesirable health effects. Therefore, surface treatment such as
coating can offer an alternative solution to slow down the fast degradation rate of
magnesium alloy. Thus, in this study, attempt has been made to coat the AZ91 magnesium …
The use of Magnesium alloys as bioresorsable metallic implant is interesting to study due to the properties of magnesium ions which can be found naturally in bone tissue as well as are essential to human metabolism. However, its fast degradation rate and excess of these ions in the body may cause undesirable health effects. Therefore, surface treatment such as coating can offer an alternative solution to slow down the fast degradation rate of magnesium alloy. Thus, in this study, attempt has been made to coat the AZ91 magnesium alloy substrate with TiN, AlN and TiAlBN coatings using single hot press target with r.f. magnetron sputtering technique. During deposition, target power, working pressure and bias voltage were optimized for each coating deposition. Coating microstructure and its crystal phases are analysed using SEM and glancing angle X-ray diffraction analysis (GAXRD). Corrosion properties were evaluated using potentiodynamic polarization using Hank’s Solution as a medium to simulate body fluid. Result showed that TiAlBN coating is acting most successfully as a protection layer by slowing down the penetration of corrosion towards AZ91 Mg alloy substrate. SEM micrographs show a minimum damage to the substrate’s surface seen after subjected to corrosion test. In conclusion, TiAlBN coating is able to protect AZ91 Mg alloy substrate surface from corrosion and able to slow down their degradation rate. The better performance of TiAlBN coating create interest to further works on exploring the potential of this hard coated on AZ91 Mg alloy for biomaterial application.
Scientific.Net
以上显示的是最相近的搜索结果。 查看全部搜索结果

Google学术搜索按钮

example.edu/paper.pdf
搜索
获取 PDF 文件
引用
References