Biodegradable magnesium-matrix composites: A review
来源期刊：International Journal of Minerals Metallurgy and Materials2020年第6期
论文作者：Jin-long Su Jie Teng Zi-li Xu Yuan Li
文章页码：724 - 744
摘 要：Biodegradable magnesium alloys as new biomedical implant materials have been extensively studied because of their notable biodegradability over traditional bio-inert metals. However, the extreme degradation rate of pure magnesium leads to the loss of its mechanical integrity before the tissue recovers completely. The solutions to this challenge are as follows:（1） purification,（2） alloying,（3） surface modification, and（4） biodegradable magnesium-matrix composites（BMMCs） synthesis. Owing to the tunability of mechanical properties, the adjustability of degradation rate, and the improvement of biocompatibility, BMMCs reinforced with bioactive reinforcements have promising applications as a new generation of biomedical implants. In this review, the processing methods, Mg matrix, and reinforcement phases of BMMCs are discussed. Moreover, the review comprehensively discusses various BMMCs synthesized thus far, aiming to show the governing aspects of the achieved mechanical properties, corrosion behavior, and biocompatibility. Finally, this paper also discusses the research direction and further development areas for these materials.
Jin-long Su1，Jie Teng1，Zi-li Xu2，Yuan Li2
1. College of Materials Science and Engineering, Hunan University2. The First Affiliated Hospital, Hunan Normal University
摘 要：Biodegradable magnesium alloys as new biomedical implant materials have been extensively studied because of their notable biodegradability over traditional bio-inert metals. However, the extreme degradation rate of pure magnesium leads to the loss of its mechanical integrity before the tissue recovers completely. The solutions to this challenge are as follows:（1） purification,（2） alloying,（3） surface modification, and（4） biodegradable magnesium-matrix composites（BMMCs） synthesis. Owing to the tunability of mechanical properties, the adjustability of degradation rate, and the improvement of biocompatibility, BMMCs reinforced with bioactive reinforcements have promising applications as a new generation of biomedical implants. In this review, the processing methods, Mg matrix, and reinforcement phases of BMMCs are discussed. Moreover, the review comprehensively discusses various BMMCs synthesized thus far, aiming to show the governing aspects of the achieved mechanical properties, corrosion behavior, and biocompatibility. Finally, this paper also discusses the research direction and further development areas for these materials.
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