Manufacture, Microstructure, Mechanical and Corrosion Properties Characterization of Mg-Ca-Zn Alloy

• Main Author: Tanoto, Hutomo
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/38654
• Institution: Institut Teknologi Bandung

In the 2000s, after development of science and technology, magnesium became the focus in the development of biomaterials again due to its degradation ability in the body. This is an advantage because no further surgical process is needed for implan removal. Magnesium has a disadvantage of its high corrosion rates. The main focus in the development carried out by the researchers are to reduce the corrosion rate of magnesium so it can offset the rate of bone growth. This is done so that the magnesium implan does not fracture or fully degrade before the bone has fully recover. This research about magnesium casting with addition of alloying elements in the form of calcium (Ca) as much as 1% and zinc (Zn) by 0, 2, and 4wt%. The casting results will be characterized using AAS to determine the chemical composition of the casting. Microstructure charactrization using XRD, Light Optical Microscope, SEM and EDS were used to determine the phases from magnesium casting. Corrosion testing was carried out in simulated body fluid with bending load to determine the effect of loading on the magnesium corrosion rate. The results of this study showed that the magnesium casting process resulted in more of Ca and Zn alloys than the design. Immersion rorrosion testing without bending load results showed 4Zn had the highest corrosion rate, followed by 2Zn and 0Zn. Immersion rorrosion testing results with bending loaf showed 0Zn had the highest corrosion rate, followed by 2Zn and 4Zn