STUDY ON PROPERTIES OF A NOVEL BIODEGRADABLE Fe–30Mn–1C ALLOY

doi:10.3724/SP.J.1037.2011.00258

Acta Metall Sin

2011, Vol. 47

Issue (10): 1342-1347 DOI: 10.3724/SP.J.1037.2011.00258

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STUDY ON PROPERTIES OF A NOVEL BIODEGRADABLE Fe–30Mn–1C ALLOY

XU Wenli ^1,2, LU Xi ^1,2, TAN Lili ¹, YANG Ke ¹

1. Institute of Metal Research, Chinese Academy of Sciences, Shengyang 110016
2. Graduate School of Chinese Academy of Sciences, Beijing 100049

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XU Wenli LU Xi TAN Lili YANG Ke. STUDY ON PROPERTIES OF A NOVEL BIODEGRADABLE Fe–30Mn–1C ALLOY. Acta Metall Sin, 2011, 47(10): 1342-1347.

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Abstract A novel Fe–30Mn–1C alloy was fabricated by vacuum induction melting, and its mechanical properties, magnetism, degradation behavior in simulated body fluid and in vitro biological properties were studied. The results showed that Fe–30Mn–1C alloy had better mechanical properties than those of Fe–30Mn alloy and 316L stainless steel due to the addition of carbon. Compared with Fe–30Mn, Fe–30Mn–1C alloy showed lower magnetic susceptibility, which is beneficial to the MRI compatibility. Electrochemical impedance spectrum (EIS) results showed that Fe–30Mn–1C alloy had lower polarization resistance, resulting in higher degradation rate compared with Fe–30Mn alloy, which was further confirmed by the static immersion test. The in vitro test results indicated that Fe–30Mn–1C alloy had lower hemolytic ratio, better anticoagulation property and less platelet adhesion as well as good cell compatibility, meeting the basic requirement on medical implants.

Key words: Fe–Mn–C alloy biodegradable mechanical property biodegradation rate biocompatibility

Received: 22 April 2011

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Supported by National Basic Research Program of China (Nos.2012CB619101 and 2012CB619102)

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https://www.ams.org.cn/EN/10.3724/SP.J.1037.2011.00258 OR https://www.ams.org.cn/EN/Y2011/V47/I10/1342

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