Microstructure evolution and texture tailoring of reduced graphene oxide reinforced Zn scaffold

Bioactive Materials
Youwen YangCijun Shuai

Abstract

Zinc (Zn) possesses desirable degradability and favorable biocompatibility, thus being recognized as a promising bone implant material. Nevertheless, the insufficient mechanical performance limits its further clinical application. In this study, reduced graphene oxide (RGO) was used as reinforcement in Zn scaffold fabricated via laser additive manufacturing. Results showed that the homogeneously dispersed RGO simultaneously enhanced the strength and ductility of Zn scaffold. On one hand, the enhanced strength was ascribed to (i) the grain refinement caused by the pinning effect of RGO, (ii) the efficient load shift due to the huge specific surface area of RGO and the favorable interface bonding between RGO and Zn matrix, and (iii) the Orowan strengthening by the homogeneously distributed RGO. On the other hand, the improved ductility was owing to the RGO-induced random orientation of grain with texture index reducing from 20.5 to 7.3, which activated more slip systems and provided more space to accommodate dislocation. Furthermore, the cell test confirmed that RGO promoted cell growth and differentiation. This study demonstrated the great potential of RGO in tailoring the mechanical performance and cell behavior of Zn scaffold ...Continue Reading

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Citations

Jan 21, 2021·Physical Chemistry Chemical Physics : PCCP·Jian ZengCijun Shuai
Dec 19, 2020·Journal of the Mechanical Behavior of Biomedical Materials·J F Rubio-ValleA Romero
Feb 14, 2021·Materials Science & Engineering. C, Materials for Biological Applications·Nishant S KulkarniVivek Gupta
Jun 27, 2021·Journal of the Mechanical Behavior of Biomedical Materials·Hanxu ZhangHuixin Liang
Jul 7, 2021·Materials Science & Engineering. C, Materials for Biological Applications·Suhyung ParkTae-Sik Jang
Aug 3, 2021·Experimental and Therapeutic Medicine·Zepeng ZhangXianqi Li
Sep 4, 2021·Materials Science & Engineering. C, Materials for Biological Applications·Jibao ZhengLing Wang
Oct 9, 2021·Biomedical Materials·Yogendra Pratap SinghAshish Kumar Agrawal
Nov 20, 2021·ACS Biomaterials Science & Engineering·Marjan BahraminasabMohammad Sadegh Nourbakhsh

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