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材料导报  2021, Vol. 35 Issue (8): 8088-8092    https://doi.org/10.11896/cldb.20010012
  金属与金属基复合材料 |
Cu含量对生物可降解Zn-Cu合金组织和性能的影响
李强1, 赵特1, 魏磊山1, 陈明华1, 孙旭东2
1 辽宁工业大学材料科学与工程学院, 锦州 121001
2 东北大学材料科学与工程学院, 沈阳 110004
Effect of Cu Contents on Microstructure and Properties of Biodegradable Zn-Cu Alloys
LI Qiang1, ZHAO Te1, WEI Leishan1, CHEN Minghua1, SUN Xudong2
1 College of Materials Science & Engineering, Liaoning University of Technology, Jinzhou 121001, China
2 School of Materials Science & Engineering, Northeastern University, Shenyang 110004, China
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摘要 以Zn粉和Cu粉为原料,采用粉末冶金技术制备生物可降解Zn-Cu合金。研究了Cu含量对生物可降解Zn-Cu合金显微组织、物相组成、抗压强度、耐腐蚀性以及抗菌性能的影响。研究结果表明:当Cu元素加入Zn基体后,Zn-Cu合金的烧结致密度增大。当Cu含量为0.5%—2.5%(质量分数,下同)时,Zn-xCu合金由单相η固溶体组成;当Cu含量为3.0%时,Zn-3.0Cu合金由η和ε两相组成。随着Cu含量的增加,Zn-xCu合金(x=0%-3%)的抗压强度从93.6 MPa提高到170.3 MPa。当Cu含量为2.5%时,Zn-2.5Cu合金的自腐蚀电位达到最大值(-1.048 5V),自腐蚀电流密度和稳定腐蚀速率均达到最小值4.630 4×10-5 A·cm-2和0.076 mm/year。在金黄色葡萄球菌培养液中,与纯Zn相比,Zn-2.5Cu合金抑菌圈直径最大为(29.8±0.3) mm,吸光度值最低为0.20,这说明Zn-2.5Cu合金对金黄色葡萄球菌的抗菌效果更好。
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李强
赵特
魏磊山
陈明华
孙旭东
关键词:  Zn-Cu合金  生物可降解  耐腐蚀性  金黄色葡萄球菌  抗菌性    
Abstract: Biodegradable Zn-Cu alloys were prepared by powder metallurgy method with Zn and Cu powder as initial materials. The influence of Cu contents on the microstructure, phase composition, compressive strength, corrosion resistance and antibacterial properties of biodegradable Zn-Cu alloys were studied. The results show that Zn-Cu alloys have higher sintering density when adding Cu elements. The Zn-xCu alloys are composed of η phase with the Cu content of 0.5%—2.5%, but the Zn-3.0Cu alloys are composed of η and ε phases with the Cu content of 3.0%. The compressive strength of sintered Zn-xCu alloys (x=0%-3%) increases form 93.6 MPa to 170.3 MPa. The self-corrosion potentials of the Zn-2.5Cu alloys comes to the maximum of -1.048 5 V, but the passivation current density and stable corrosion rate come to the minmum of 4.630 4×10-5 A·cm-2 and 0.076 mm/year, respectively. Compared with pure Zn samples, the inhibition zone size of Zn-2.5Cu sample comes to the maximum of (29.8±0.3) mm and the absorption value of Zn-2.5Cu is the lowest of Abs=0.20 in the Staphylococcus aureus culture medium, which shows the antimicrobial effect of Zn-2.5Cu alloy to S. aureus is better.
Key words:  Zn-Cu alloys    biodegradable    corrosion resistance    S. aureus    antimicrobial property
               出版日期:  2021-04-25      发布日期:  2021-05-10
ZTFLH:  TG178  
基金资助: 国家自然科学基金(51805236);辽宁省教育厅基础研究项目(JJL201915407)
通讯作者:  liandqiangjz@163.com   
作者简介:  李强,辽宁工业大学教授,毕业于东北大学,材料学博士学位,主要从事生物医用材料及表面改性技术的研究。在国内外重要期刊发表学术论文50余篇,主持和参与国家、省部科技项目10余项。
引用本文:    
李强, 赵特, 魏磊山, 陈明华, 孙旭东. Cu含量对生物可降解Zn-Cu合金组织和性能的影响[J]. 材料导报, 2021, 35(8): 8088-8092.
LI Qiang, ZHAO Te, WEI Leishan, CHEN Minghua, SUN Xudong. Effect of Cu Contents on Microstructure and Properties of Biodegradable Zn-Cu Alloys. Materials Reports, 2021, 35(8): 8088-8092.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.20010012  或          http://www.mater-rep.com/CN/Y2021/V35/I8/8088
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