Increasing the surface roughness of magnesium AZ31B using sandblasting for the preparation of biodegradable implant materials Slamet Saefudin, Dini Cahyandari, Ilham Yustar Afif, Samsudi Raharjo, Purnomo, Muh Amin
Universitas Muhammadiyah Semarang
Abstract
The development of implant biomaterials has become the focus of research in the fields of materials engineering and medicine. Magnesium-based biomaterial AZ31B has been identified as a potential candidate for making bone implants that can speed up the healing process. However, its smooth surface characteristics need to be improved to increase binding strength and interactions between tissues so as to increase biocompatibility. Increasing the surface roughness of AZ31B magnesium also plays an important role in increasing the adhesion of the protective layer. One method that has been proven effective in increasing the roughness of metal surfaces is sandblasting. This research discusses the sandblasting process to increase the roughness and changes in properties that occur on the surface of AZ31B magnesium as a preparation for implant biomaterial. Variations in pressure, distance, angle and abrasive material are the main parameters in the sandblasting process. Variations in the sandblasting process were analyzed by testing roughness, hardness, scanning electron microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDX). The research results show that variations in sandblasting parameters have a significant effect on the roughness and morphology of the sample surface.
