Effect of Zn and Nd Elements on Microstructure, Mechanical and Corrosion Properties of Biodegradable Mg-Ag Alloys

Abstract

In this study, casting, microstructure, mechanical and in vitro corrosion properties of 0.5% (Zn and Nd) element added Mg-3%Ag cast alloys were investigated. According to the results of the experiment, it was observed that the grains got refined with the effect of Zn element added to the alloys and thus some mechanical properties of the alloys increased. The highest hardness value was observed in the alloy (Mg-3Ag-0.5Nd) created by the addition of Nd element. After the corrosion tests, differences were determined depending on the alloying elements. It has been determined that the secondary phases seen in the structure of the alloys have an effect on the mechanical and corrosion properties of these alloys. According to all these results, it was concluded that Mg-Ag alloys are required and open for development in the field of biomaterials.

Keywords

• Mg-Ag alloys
• microstructure
• Mechanical properties
• In vitro corrosion properties

Biyobozunur Mg-Ag Alaşımlarının Mikroyapı, Mekanik ve Korozyon Özelliklerine Zn ve Nd Elementlerinin Etkisi

Abstract

Bu çalışmada, %0,5 oranlarında (Zn ve Nd) element ilaveli Mg-%3Ag döküm alaşımlarının, mikroyapı, mekanik, in vitro korozyon özellikleri incelenmiştir. Deney sonuçlarına göre, alaşımlara ilave edilen Zn elementinin etkisiyle (Mg-3Ag-0,5Zn) alaşımda tanelerin inceldiği ve bu sayede alaşımların bazı mekanik özelliklerinin de arttığı gözlenmiştir. Nd elementi ilavesi ile oluşturulan (Mg-3Ag-0,5Nd) alaşımında ise en yüksek sertlik değeri gözlenmiştir. Korozyon testleri sonrasında ise alaşım elementlerine bağlı olarak farklı korozyon değerleri tespit edilmiştir. Alaşımların yapısında tespit edilen ikincil fazların, alaşımların mekanik özelliklerine ve korozyon özelliklerine etki ettiği tespit edilmiştir. Tüm bu sonuçlar neticesinde Mg-Ag alaşımlarının biyomalzeme alanında gelişime açık ve ihtiyaç duyduğu kanısına varılmıştır.

Keywords

• Mg-Ag alaşımları
• Mikroyapı
• Mekanik özellikler
• İn vitro korozyon özellikleri

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