A novel hybrid approach to develop bioresorbable material

Ali, Nabeel, Lone, Nadeem Fayaz, Siddiquee, Arshad Noor, Imran, Iffat, Haider, Julfikar ORCID: https://orcid.org/0000-0001-7010-8285, Goyal, Vipin, Puri, Vrishin and Sardana, Tushar (2022) A novel hybrid approach to develop bioresorbable material. Journal of Orthopaedics, 34. pp. 61-66. ISSN 0972-978X

Preview

Accepted Version Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (847kB) | Preview

Abstract

Damaged/injured tissues within the body are being replaced or reinforced by metallic orthopaedic implants. A bioresorbable implant is able to dissolve within the body, unlike its traditional counterparts. Bulk metallic glasses (BMGs) possess incredible properties, including high biocompatibility by virtue of their amorphous structure and absence of dislocations. However, the fabrication of BMGs is a challenging task because in order to achieve an amorphous structure, fast cooling is a pre-requisite which in the case of casting is very difficult to achieve due to the fact that fast cooling rate and adequate rate of filling of the mold possess a trade-off relationship. Therefore, purpose of this work is to develop a simple novel hybrid approach that is cost effective and attempts to synthesize BMG based on Mg–Ca–Zn constituent. Synthesis of bioresorbable material was attempted by hybridizing a recent friction stir processing (FSP) technique coupled with gas tungsten arc welding (GTAW). Magnesium was employed as base material on which FSP was performed with Calcium granules as reinforcement. After FSP, GTAW process was performed by using Zn as filler material. The added Ca and Zn were found to effectively intermix with the Mg matrix. Especially, a relatively invariable distribution of Ca phases was observed in the stirred microstructure after FSP. The current work is expected to alleviate the physiological issues pertaining to orthopaedic fixations and decrease the need for secondary surgeries in geriatric fractures.