医用可降解Fe30Mn○xCa合金的制备及性能

doi:10.12068/j.issn.1005-3026.2021.03.005

东北大学学报（自然科学版） ›› 2021, Vol. 42 ›› Issue (3): 333-339.DOI: 10.12068/j.issn.1005-3026.2021.03.005

医用可降解Fe₃₀Mn_○xCa合金的制备及性能

张雅静，王一鸣，李帅平

(东北大学材料科学与工程学院，辽宁沈阳110819)

收稿日期:2020-09-25 修回日期:2020-09-25 接受日期:2020-09-25 发布日期:2021-03-12
通讯作者: 张雅静
作者简介:张雅静(1964-)，女，辽宁沈阳人，东北大学副教授.
基金资助:
辽宁省自然科学基金资助项目(2016020028).

Preparation and Properties of Biodegradable Fe₃₀Mn_○xCa Alloys

ZHANG Ya-jing， WANG Yi-ming， LI Shuai-ping

School of Material Science & Engineering， Northeastern University， Shenyang 110819，China.

Received:2020-09-25 Revised:2020-09-25 Accepted:2020-09-25 Published:2021-03-12
Contact: ZHANG Ya-jing
About author:-
Supported by:
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摘要/Abstract

摘要： 通过机械合金化、粉末压坯及热挤压的方法制备了医用可降解Fe₃₀Mn_○xCa(x=0，1.5，3.0，4.5)合金棒材，运用金相显微镜、SEM、拉伸测试、电化学测试和SBF浸泡腐蚀等研究了Ca的添加对合金组织及性能的影响.结果发现，Fe₃₀Mn_○xCa合金均由奥氏体组成，且随着Ca质量分数增加，该合金硬度增加，伸长率和强度降低，降解性能显著提高，腐蚀速率从Fe₃₀Mn的0.1130mg/(cm²·d)增至Fe₃₀Mn_4.5Ca的0.2260mg/(cm²·d).细胞毒性实验表明其生物相容性为0～1级.

关键词: 机械合金化;可降解金属;Fe₃₀Mn_○xCa合金;腐蚀速率;生物相容性

Abstract: The medical degradable Fe₃₀Mn_○xCa(x=0，1.5，3.0 and 4.5)alloy bars were prepared by mechanical alloying， powder pressing and hot extrusion. The effect of Ca addition on the microstructure and properties of the alloy was studied by optical metallographic microscope， scanning electron microscope (SEM)， tensile test， electrochemical test and SBF solution immersion corrosion test. The results show that the Fe₃₀Mn_○xCa alloy is composed by the austenite phase and with the increasing mass fraction of Ca， the hardness increases， and the tensile strength and final elongation decrease.Meanwhile， the degradation performance of the alloy is significantly improved， where the corrosion rate increases from 0.1130mg/(cm²·d)of Fe₃₀Mn to 0.2260mg/(cm²·d)of Fe₃₀Mn_4.5Ca in the corrosion tests. The cytotoxicity test indicates that the biocompatibility is 0 ~ 1grade.

Key words: mechanical alloying;biodegradable metal; Fe₃₀Mn_○xCa alloy; corrosion rate; biocompatibility

中图分类号:

TG141

张雅静，王一鸣，李帅平. 医用可降解Fe₃₀Mn_○xCa合金的制备及性能[J]. 东北大学学报（自然科学版）, 2021, 42(3): 333-339.

ZHANG Ya-jing， WANG Yi-ming， LI Shuai-ping. Preparation and Properties of Biodegradable Fe₃₀Mn_○xCa Alloys[J]. Journal of Northeastern University(Natural Science), 2021, 42(3): 333-339.

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医用可降解Fe₃₀Mn_○xCa合金的制备及性能

Preparation and Properties of Biodegradable Fe₃₀Mn_○xCa Alloys

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