复合抗菌铝合金研究
发布时间：2018-11-06 08:51
【摘要】：本文通过金相显微镜、显微维氏硬度仪、万能拉伸机、微分差热分析仪(DSC)、电化学工作站以及覆膜法与抑菌环检测方法,研究Cu、Ag复合,Zn、Ag复合,RE、Ag复合以及多种合金元素复合对Al-Mg-Si合金组织、力学性能、耐蚀性及抗菌性能的影响。研究发现;Cu、Ag复合能够细化Al-Mg-Si合金晶粒,提高合金硬度与抗拉强度,促进合金中β″相的析出,降低β″相析出的激活能。B2合金(3%Cu、0.1%Ag)的β″相析出的激活能为46.5 kJ/mol,低于A合金(只含0.1Ag)β″相析出的激活能(58.6 kJ/mol)。在相同的时效条件下,Cu、Ag复合可缩短峰值出现的时间,提高峰值时效硬度。但Cu、Ag复合会降低合金耐蚀性,通过时效处理可提高合金的耐蚀性。Cu、Ag复合可提高Al-Mg-Si合金的抗菌性,时效处理后,B1合金(1%Cu、0.1%Ag)的抗菌率为98.6%,B2合金的抗菌率为99.5%。Zn、Ag复合能够细化合金晶粒,提高合金硬度与抗拉强度,降低合金延伸率。在相同的时效条件下,提高Zn含量可缩短含Ag合金达到峰值硬度的时间,提高合金峰值时效硬度。Zn、Ag复合可促进合金β″相的析出,降低β″相析出温度。C2合金(3%Zn、0.1%Ag)β″相析出的激活能为EC2=51.2 kJ/mol,低于A合金β″相析出的激活能(EA=58.6kJ/mol)。随着含Ag合金中Zn含量的增加,合金的耐蚀性降低。时效处理可提高Zn、Ag复合合金的耐蚀性。Zn、Ag复合可提高合金的抗菌性,随着Zn含量的增加,合金的抗菌性提高,时效处理可进一步提高合金的抗菌性,时效处理后,C1、C2合金的抗菌率分别为95.8%,97.2%。RE、Ag复合能够细化合金晶粒,提高合金硬度与抗拉强度。当RE含量过高时,会导致合金晶粒粗化,合金性能下降。在相同的时效条件下,RE、Ag复合可提高合金峰值时效硬度,RE含量过高会导致合金的峰值时效硬度降低。RE、Ag复合可降低β″相析出的激活能,促进β″相析出。D1合金(0.1%RE、0.1%Ag)β″相析出的激活能为ED1=53.5kJ/mol,低于A合金β″相析出的激活能,RE、Ag复合可提高合金中β′相与β相的析出温度,抑制β′相与β相的析出。随着合金中RE含量的增加,合金的耐蚀性提高。时效处理可进一步提高合金的耐蚀性。RE、Ag复合可提高合金的抗菌性能,随着合金中RE含量的增加合金的抗菌性提高。时效处理可进一步提高合金的抗菌性,经时效处理后,D1合金的抗菌率约为90.8%,D2合金的抗菌率约为93.4%。复合添加剂能够细化Al-Mg-Si合金的晶粒,提高合金的力学性能,降低合金的耐蚀性,时效处理可提高合金的耐蚀性。复合添加剂促进Al-Mg-Sig合金β″相的析出,降低相变温度,降低β″相析出的激活能。E合金β″相析出的激活能为EE=48.6 kJ/mol,低于A合金β″相析出的激活能(EA=58.6 kJ/mol)。E合金的抗菌性较好,时效处理后E合金的抗菌率明显高于其他组合金。
[Abstract]:In this paper, Cu,Ag composite, Zn,Ag compound, RE, were studied by metallographic microscope, microhardness tester, universal stretching machine, (DSC), electrochemical workstation, film mulching method and bacteriostasis ring detection method. Effects of Ag and multiple alloy elements on microstructure, mechanical properties, corrosion resistance and antibacterial properties of Al-Mg-Si alloys. Research findings; Cu,Ag composite can refine the grain size of Al-Mg-Si alloy, improve the hardness and tensile strength of the alloy, promote the precipitation of 尾 "phase in the alloy, and decrease the activation energy of the precipitation of 尾" phase. The activation energy of 尾 "phase precipitated by 0.1%Ag is 46.5 kJ/mol, lower than that of A alloy (0.1Ag only) 尾" phase (58.6 kJ/mol). Under the same aging condition, Cu,Ag compound can shorten the time of peak appearance and increase the peak age hardness. However, the corrosion resistance of Cu,Ag alloy can be reduced by aging treatment, and the corrosion resistance of Al-Mg-Si alloy can be improved by aging treatment. The antibacterial rate of 0.1%Ag is 98.6% and 99.5% respectively. The composite can refine the grain size, improve the hardness and tensile strength of the alloy, and decrease the elongation of the alloy. Under the same aging conditions, increasing the content of Zn can shorten the time of reaching peak hardness of the alloy containing Ag, and increase the peak age hardness of the alloy. Zn,Ag composite can promote the precipitation of 尾 "phase in the alloy." The activation energy of C _ 2 alloy (3ZnN _ (0.1) Ag) 尾 "phase precipitates is lower than that of A alloy's 尾" phase (EA=58.6kJ/mol). The corrosion resistance of Ag alloy decreases with the increase of Zn content. Aging treatment can improve the corrosion resistance of Zn,Ag composite alloy, Zn,Ag composite can improve the antibacterial property of the alloy, with the increase of Zn content, the antibacterial property of the alloy can be improved, and the aging treatment can further improve the antibacterial property of the alloy. The antibacterial rate of C2 alloy is 95.8% and 97.2%, respectively. The composite can refine the grain size of the alloy and improve the hardness and tensile strength of the alloy. When the content of RE is too high, the grain size of the alloy will be coarsened and the properties of the alloy will be decreased. Under the same aging condition, the peak aging hardness of the alloy can be increased by RE,Ag composite, and the peak aging hardness of the alloy will be decreased when the content of RE is too high. The activation energy of 尾 "phase precipitation can be decreased by RE,Ag composite. The activation energy of 尾 "phase precipitation in D1 alloy is lower than that in A alloy 尾" phase, and the activation energy of 尾 "phase precipitation in D1 alloy is lower than that in A alloy 尾" phase, and the activation energy of 尾 "phase precipitation in D1 alloy is lower than that in A alloy 尾" phase. The precipitation temperature of 尾 'phase and 尾 phase can be increased by Ag composite, and the precipitation of 尾' phase and 尾 phase can be inhibited. The corrosion resistance of the alloy increases with the increase of RE content. Aging treatment can further improve the corrosion resistance of the alloy, RE,Ag composite can improve the antibacterial properties of the alloy, and the antibacterial property of the alloy increases with the increase of the content of RE in the alloy. After aging treatment, the antibacterial rate of D1 alloy was about 90.8% and that of D2 alloy was 93.4%. The composite additive can refine the grain size of the Al-Mg-Si alloy, improve the mechanical properties of the alloy, and reduce the corrosion resistance of the alloy. The aging treatment can improve the corrosion resistance of the alloy. The composite additive can promote the precipitation of 尾 "phase in Al-Mg-Sig alloy, decrease the phase transition temperature and reduce the activation energy of 尾" phase precipitation. The activation energy of 尾 "phase precipitation in E alloy is EE=48.6 kJ/mol,." The activation energy of EA=58.6 kJ/mol). E alloy is lower than that of A alloy 尾 "phase. The antibacterial rate of aging treated E alloy is obviously higher than that of other combination gold.
【学位授予单位】：山东建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG146.21
本文编号：2313809
[Abstract]:In this paper, Cu,Ag composite, Zn,Ag compound, RE, were studied by metallographic microscope, microhardness tester, universal stretching machine, (DSC), electrochemical workstation, film mulching method and bacteriostasis ring detection method. Effects of Ag and multiple alloy elements on microstructure, mechanical properties, corrosion resistance and antibacterial properties of Al-Mg-Si alloys. Research findings; Cu,Ag composite can refine the grain size of Al-Mg-Si alloy, improve the hardness and tensile strength of the alloy, promote the precipitation of 尾 "phase in the alloy, and decrease the activation energy of the precipitation of 尾" phase. The activation energy of 尾 "phase precipitated by 0.1%Ag is 46.5 kJ/mol, lower than that of A alloy (0.1Ag only) 尾" phase (58.6 kJ/mol). Under the same aging condition, Cu,Ag compound can shorten the time of peak appearance and increase the peak age hardness. However, the corrosion resistance of Cu,Ag alloy can be reduced by aging treatment, and the corrosion resistance of Al-Mg-Si alloy can be improved by aging treatment. The antibacterial rate of 0.1%Ag is 98.6% and 99.5% respectively. The composite can refine the grain size, improve the hardness and tensile strength of the alloy, and decrease the elongation of the alloy. Under the same aging conditions, increasing the content of Zn can shorten the time of reaching peak hardness of the alloy containing Ag, and increase the peak age hardness of the alloy. Zn,Ag composite can promote the precipitation of 尾 "phase in the alloy." The activation energy of C _ 2 alloy (3ZnN _ (0.1) Ag) 尾 "phase precipitates is lower than that of A alloy's 尾" phase (EA=58.6kJ/mol). The corrosion resistance of Ag alloy decreases with the increase of Zn content. Aging treatment can improve the corrosion resistance of Zn,Ag composite alloy, Zn,Ag composite can improve the antibacterial property of the alloy, with the increase of Zn content, the antibacterial property of the alloy can be improved, and the aging treatment can further improve the antibacterial property of the alloy. The antibacterial rate of C2 alloy is 95.8% and 97.2%, respectively. The composite can refine the grain size of the alloy and improve the hardness and tensile strength of the alloy. When the content of RE is too high, the grain size of the alloy will be coarsened and the properties of the alloy will be decreased. Under the same aging condition, the peak aging hardness of the alloy can be increased by RE,Ag composite, and the peak aging hardness of the alloy will be decreased when the content of RE is too high. The activation energy of 尾 "phase precipitation can be decreased by RE,Ag composite. The activation energy of 尾 "phase precipitation in D1 alloy is lower than that in A alloy 尾" phase, and the activation energy of 尾 "phase precipitation in D1 alloy is lower than that in A alloy 尾" phase, and the activation energy of 尾 "phase precipitation in D1 alloy is lower than that in A alloy 尾" phase. The precipitation temperature of 尾 'phase and 尾 phase can be increased by Ag composite, and the precipitation of 尾' phase and 尾 phase can be inhibited. The corrosion resistance of the alloy increases with the increase of RE content. Aging treatment can further improve the corrosion resistance of the alloy, RE,Ag composite can improve the antibacterial properties of the alloy, and the antibacterial property of the alloy increases with the increase of the content of RE in the alloy. After aging treatment, the antibacterial rate of D1 alloy was about 90.8% and that of D2 alloy was 93.4%. The composite additive can refine the grain size of the Al-Mg-Si alloy, improve the mechanical properties of the alloy, and reduce the corrosion resistance of the alloy. The aging treatment can improve the corrosion resistance of the alloy. The composite additive can promote the precipitation of 尾 "phase in Al-Mg-Sig alloy, decrease the phase transition temperature and reduce the activation energy of 尾" phase precipitation. The activation energy of 尾 "phase precipitation in E alloy is EE=48.6 kJ/mol,." The activation energy of EA=58.6 kJ/mol). E alloy is lower than that of A alloy 尾 "phase. The antibacterial rate of aging treated E alloy is obviously higher than that of other combination gold.
【学位授予单位】：山东建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG146.21
【相似文献】
相关硕士学位论文 前1条
1 姚宇;复合抗菌铝合金研究[D];山东建筑大学;2017年
，本文编号：2313809
本文链接：https://www.wllwen.com/kejilunwen/jiagonggongyi/2313809.html
