田培梧,贺俊光,文九巴,师慧娜

• 1:河南科技大学材料科学与工程学院
• 2:有色金属新材料与先进加工技术省部共建协同创新中心

摘要(Abstract)：

通过光学显微镜(OM)、扫描电镜(SEM)、X射线衍射仪(XRD)、浸泡测试和电化学测试等研究了Mg-2Zn-1Y-0.5Zr合金在490℃固溶4～14 h后的微观组织和腐蚀性能。结果表明:随着固溶时间的延长,合金的晶粒尺寸逐渐由98.19μm增大到142.90μm,合金中的第二相逐渐溶解,第二相体积分数由1.33%降到0.02%,大幅降低了第二相与合金基体之间因腐蚀电位不同而引起的微电偶腐蚀;在490℃固溶处理8 h时后,合金的腐蚀速率为0.414 mm/y,自腐蚀电位为-1.525 V,自腐蚀电流密度为3.327μA/cm~2,耐蚀性能最好。

关键词(KeyWords)： Mg-2Zn-1Y-0.5Zr合金;固溶时间;微观组织;腐蚀性能

Abstract:

Keywords:

基金项目(Foundation): 河南省高等学校重点科研项目(20A430010)

作者(Author): 田培梧,贺俊光,文九巴,师慧娜

DOI: 10.13289/j.issn.1009-6264.2021-0152

参考文献(References)：

• [1] Chen Y J,Xu Z G,Smith C,et al.Recent advances on the development of magnesium alloys for biodegradable implants[J].Acta Biomaterialia,2014,10(11):4561-4573.
• [2] 张佳，宗阳，袁广银，等.新型医用Mg-Nd-Zn-Zr镁合金在模拟体液中的降解行为[J].中国有色金属学报，2010,20(10):1989-1997.ZHANG Jia,ZONG Yang,YUAN Guang-yin,et al.Degradable behavior of new-type medical Mg-Nd-Zn-Zr magnesium alloy in simulated body fluid[J].The Chinese Journal of Nonferrous Metals,2010,20(10):1989-1997.
• [3] Zheng Y F,Gu X N,F Witte.Biodegradable metals[J].Materials Science and Engineering,R.Reports,2014,77:1-34.
• [4] Ding Y F,Wen C,Hodgson P,et al.Effects of alloying elements on the corrosion behavior and biocompatibility of biodegradable magnesium alloys:a review[J].Journal of Materials Chemistry B,2014,2(14):1912-1933.
• [5] 章晓波，殷俏，马青龙，等.时效处理对挤压态Mg-Gd-Nd-Sr-Zn-Zr合金力学与腐蚀性能的影响[J].中国有色金属学报，2016,26(3):526-534.ZHANG Xiao-bo,YIN Qiao,MA Qing-long,et al.Effect of aging treatment on mechanical and corrosion properties of as-extruded Mg-Gd-Nd-Sr-Zn-Zr alloy[J].The Chinese Journal of Nonferrous Metals,2016,26(3):526-534.
• [6] Cai C,Song R,Wang L,et al.Surface corrosion behavior and reaction product film deposition mechanism of Mg-Zn-Zr-Nd alloys during degradation process in Hank's solution[J].Surface and Coatings Technology,2018,342:57-68.
• [7] Lu Y,Bradshaw A R,Chiu Y L,et al.Effects of secondary phase and grain size on the corrosion of biodegradable Mg-Zn-Ca alloys[J].Materials Science and Engineering C,2015,48:480-486.
• [8] Zhang B,Hou Y,Wang X,et al.Mechanical properties,degradation performance and cytotoxicity of Mg-Zn-Ca biomedical alloys with different compositions[J].Materials Science and Engineering C,2011,31(8):1667-1673.
• [9] 王鲁宁，孟瑶，刘丽君，等.可降解锌基生物材料的研究进展[J].金属学报，2017,53(10):1317-1322.WANG Lu-ning,MENG Yao,LIU Li-jun,et al.Research progress on biodegradable zinc-based biomaterials[J].Acta Metallurgica Sinca,2017,53(10):1317-1322.
• [10] Zhang E,Lei Y.Microstructure,mechanical properties and bio-corrosion properties of Mg-Zn-Mn-Ca alloy for biomedical application[J].Materials Science and Engineering A,2008,497(1/2):111-118.
• [11] Xu D K,Tang W N,Liu L,et al.Effect of Y concentration on the microstructure and mechanical properties of as-cast Mg-Zn-Y-Zr alloys[J].Journal of Alloys and Compounds,2007,432(1/2):129-134.
• [12] Jafari H,Rahimi F,Sheikhsofla Z.In vitro corrosion behavior of Mg-5Zn alloy containing low Y contents[J].Materials and Corrosion,2016,67(4):396-405.
• [13] 袁广银，牛佳林.可降解医用镁合金在骨修复应用中的研究进展[J].金属学报，2017,53(10):1168-1180.YUAN Guang-yin,NIU Jia-lin.Research progress of biodegradable magnesium alloys for orthopedic applications[J].Acta Metallurgica Sinica,2017,53(10):1169-1180.
• [14] Gu X,Zheng Y,Cheng Y,et al.In vitro corrosion and biocompatibility of binary magnesium alloys[J].Biomaterials,2009,30(4):484-498.
• [15] Li Y,Wen C,Mushahary D,et al.Mg-Zr-Sr alloys as biodegradable implant materials[J].Acta Biomaterialia,2012,8(8):3177-3188.
• [16] Srinivasan A,Blawert C,Huang Y,et al.Corrosion behavior of Mg-Gd-Zn based alloys in aqueous NaCl solution[J].Journal of Magnesium and Alloys,2014,2(3):245-256.
• [17] Yuan Z,Li J Y,Liaw P K,et al.Effects of heat treatment on the mechanical properties and corrosion behaviour of the Mg-2Zn-0.2Mn-xNd alloys[J].Journal of Alloys and Compounds,2018,769:552-565.
• [18] Argde G R,Panigrahi S K,Mishra R S.Effects of grain size on the corrosion resistance of wrought magnesium alloys containing neodymium[J].Corrosion Science,2012,58(5):145-151.
• [19] 程丹丹，文九巴，贺俊光，等.稀土Y对Mg-2Nd-0.5Zn-0.4Zr镁合金生物腐蚀性能的影响[J].中国有色金属学报，2015,25(10):2783-2789.CHENG Dan-dan,WEN Jiu-ba,HE Jun-guang,et al.Effects of Y on biocorrosion properties of Mg-2Nd-0.5Zn-0.4Zr magnesium alloy[J].The Chinese Journal of Nonferrous Metals,2015,25(10):2783-2789.
• [20] Gui Z,Kang Z,Li Y.Mechanical and corrosion properties of Mg-Gd-Zn-Zr-Mn biodegradable alloy by hot extrusion[J].Journal of Alloys and Compounds,2016,685:222-230.

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