镁合金表面有机/无机杂化涂层的性能
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摘要
在AZ31镁合金表面制备有机/无机杂化涂层,用扫描电子显微镜、扫描探针显微镜、电化学工作站、光学显微镜、涂层测厚仪等手段对杂化涂层的表面形貌、耐蚀性、附着力及厚度进行表征,研究了有机/无机杂化溶胶-凝胶体系的pH值对涂层性能的影响。结果表明:pH值对镁合金表面的杂化涂层的性能有显著的影响。当pH值为3~3.5时,可在镁合金表面制备出高平整度且少缺陷的涂层,厚度约为22μm;当pH值为2.2~2.8时,涂层变薄、表面起伏较大且有较多的孔洞。当pH=3时杂化涂层具有良好的附着力和最正的腐蚀电位,且腐蚀电流密度最小(约为7.34×10-5A/cm~2),相对于空白镁合金试样的缓蚀效率约为99.7%。
Organic/inorganic hybrid coatings were prepared on AZ31 magnesium alloy, which then was characterized by means of scanning electron microscope, scanning probe microscope, electrochemical analyzer, optical microscope and coatings thickness tester in terms of surface morphology, corrosion resistance, adhesion and thickness. While the influence of pH value of organic/inorganic hybrid sol-gel on the properties of organic/inorganic hybrid coating was also investigated. The results show that pH values of organic/inorganic hybrid sol-gel have important effect on the properties of the organic/inorganic hybrid coatings formed on AZ31 magnesium alloy: When pH value is in the range 3~3.5, a smooth and few defects hybrid coating of the thickness of 22 μm can be obtained; When pH value is in the range2.2~2.8, the hybrid coating became thin and coarse with some big pores; When pH value equals to 3.0,the hybrid coating has good adhesion, highest corrosion potential and minimum corrosion current density(~7.34 × 10~(-5)A/cm~2). Corrosion inhibition efficiency of the hybrid coating prepared by sol-gel with pH 3.0could reach ~ 99.7% compared to the blank AZ31 magnesium alloy.
Organic/inorganic hybrid coatings were prepared on AZ31 magnesium alloy, which then was characterized by means of scanning electron microscope, scanning probe microscope, electrochemical analyzer, optical microscope and coatings thickness tester in terms of surface morphology, corrosion resistance, adhesion and thickness. While the influence of pH value of organic/inorganic hybrid sol-gel on the properties of organic/inorganic hybrid coating was also investigated. The results show that pH values of organic/inorganic hybrid sol-gel have important effect on the properties of the organic/inorganic hybrid coatings formed on AZ31 magnesium alloy: When pH value is in the range 3~3.5, a smooth and few defects hybrid coating of the thickness of 22 μm can be obtained; When pH value is in the range2.2~2.8, the hybrid coating became thin and coarse with some big pores; When pH value equals to 3.0,the hybrid coating has good adhesion, highest corrosion potential and minimum corrosion current density(~7.34 × 10~(-5)A/cm~2). Corrosion inhibition efficiency of the hybrid coating prepared by sol-gel with pH 3.0could reach ~ 99.7% compared to the blank AZ31 magnesium alloy.
引文
[1]Wei Y H,Xu B S.Theory and practice of magnesium alloy corrosion protection[M].Beijing:Metallurgical Industry Press,2007:4(卫英慧,许并社.镁合金腐蚀防护的理论与实践[M].北京:冶金工业出版社,2007:4)
[2]Xue J F.Corrosion Prevention Technology of Magnesium Alloy[M].Beijing:Chemical Industrial Press,2010:10(薛俊峰.镁合金防腐蚀技术[M].北京:化学工业出版社,2010:10)
[3]Yan H.New Technology of Metal Surface Treatment[M].Beijing:Metallurgical Industry Press,1996:10(阎洪.金属表面处理新技术[M].北京:冶金工业出版社,1996:10)
[4]Gao Z Y,Pan F S.Development of fabrication processes and adhesion measurement of functional surface coating on magnesium alloys[J].Gongneng Cailiao/journal of Functional Materials,2012,43(14):553(高正源,潘复生.镁合金表面功能涂层制备与界面表征技术的研究进展[J].功能材料,2012(12):1817)
[5]Gao Z,Pan F.Investigation on microstructure and mechanical properties of nano-ceramic coating on AZ31 magnesium alloys[J].Journal of Chongqing University,2012,35(7):67(高正源,潘复生.AZ31镁合金表面纳米陶瓷涂层的组织与力学性能分析[M].重庆大学学报,2012,35(7):67)
[6]Gao Z Y,Pan F S,Tang A T,et al.Investigation on corrosion and wear resistance of AZ31 magnesium alloy by single layer nanocrystalline Al2O3thin film[J].Journal of Functional Materials,2013,44(8):1069(高正源,潘复生,汤爱涛等.AZ31镁合金表面纳米Al2O3涂层的耐蚀耐磨性能研究[J].功能材料,2013,44(8):1069)
[7]Song G L.Corrosion and Protection of Magnesium Alloy[M].Beijing:Chemical Industrial Press,2006:6(宋光玲.镁合金腐蚀与防护[M].北京:化学工业出版社,2006:6)
[8]Wu B R.Organic-inorganic Hybrid Material and Its Application[M].Beijing:Chemical Industrial Press,2005:5(吴壁耀,张超灿.有机-无机杂化材料及其应用[M].北京:化学工业出版社,2005:5)
[9]Guo X H.Effect of Sol Compositions on Corrosion Protection of SNAP Film Coated on Magnesium Alloy[J].Chinese Journal of Inorganic Chemistry,2009,25(7):1254(郭兴华,安茂忠,杨培霞,李海先.SNAP溶胶组成对镁合金涂层耐蚀性的影响[J].无机化学学报,2009,25(7):1254)
[10]Wang H L.Study on organic inorganic hybrid materials of organic polymer/Si O2[M].Hefei:Hefei Industry University Press,2007:10(王华林.有机聚合物/Si O2有机-无机杂化材料的研究[M].合肥:合肥工业大学出版社,2007:10)
[11]Zheng W T.Thin film materials and thin film technology[M].Beijing:Chemical Industrial Press,2007:1(郑伟涛.薄膜材料与薄膜技术[M].北京:化学工业出版社,2007:1)
[12]F.Zanotto,V.Grassi,A.Frignani,F.Zucchi.Protection of the AZ31 magnesium alloy with cerium modified silane coatings[J].Materials Chemistry and Physics,2011,129(1-2):1
[13]Lamaka S V,Montemor M F,Galio A F,et al.Novel hybrid solgel coatings for corrosion protection of AZ31B magnesium alloy[J].Electrochimica Acta,2008,53(14):4773
[14]Xu B S.Nano-surface-engineering[M].Beijing:Chemical Industrial Press,2003:9(徐滨士.纳米表面工程[M].北京:化学工业出版社,2003:9)
[15]Wang X H,Sun Y M,Liu S H,et al.Preparation and corrosion characterization of organic-inorganic hybrid coatigns[J].Corrosion Science&Protection Technology,2006,18(4):292(王秀华,孙益民,刘守华等.有机-无机杂化涂层制备及耐腐蚀性能研究[J].腐蚀科学与防护技术,2006,18(4):292)
[16]Zhou S H.Preparation of PDMS/Si O2hybrid material and its application in the protection of ancient ivory[D].Chengdu University of Technology,2008:3(周述慧.PDMS/Si O2杂化材料的制备及其在古象牙保护中的应用[D].成都理工大学,2008:3)
[17]Huang C Z,Ai X,Hou Z G,et al.Status quo in the research and application of sol-gel method[J].Materials Review,1997,11(3):8(黄传真,艾兴,侯兴刚等.溶胶-凝胶法的研究和应用现状[J].材料导报,1997,11(3):8)
[18]Bing L.Progress of Organic/Inorganic Hybrid Optical-Functional Materials Prepared by the Sol-Gel Method[J].Progress in Chemistry,2005(1):85(刘冰,强亮生.溶胶-凝胶法制备光学杂化功能材料[J].化学进展,2005,17(1):85)
[19]Huang J F.The principle and technology of Sol-Gel[M].Beijing:Chemical Industrial Press,2005:9(黄剑锋.溶胶-凝胶原理与技术[M].北京:化学工业出版社,2005:9)
[20]Gan G.Films Via Sol Gel Technique and it′s Applications[J].Journal of Kunming University Ofence&Technology,1997,22(1):143(甘友国,郭玉忠,苏云生.溶胶-凝胶法薄膜制备工艺及其应用[J].昆明理工大学学报,1997,22(1):143)
[21]Lin B,Liu H,Zeng W,et al.Study on Surface Structure and Corrosion Resistance of AZ91 Alloy After Injecting Ion[J].Hot Working Technology,2010,39(12):117(林波,刘洪喜,曾维华等.离子注入AZ91镁合金表面结构和耐蚀性能研究[J].热加工工艺,2010,39(12):117)
[2]Xue J F.Corrosion Prevention Technology of Magnesium Alloy[M].Beijing:Chemical Industrial Press,2010:10(薛俊峰.镁合金防腐蚀技术[M].北京:化学工业出版社,2010:10)
[3]Yan H.New Technology of Metal Surface Treatment[M].Beijing:Metallurgical Industry Press,1996:10(阎洪.金属表面处理新技术[M].北京:冶金工业出版社,1996:10)
[4]Gao Z Y,Pan F S.Development of fabrication processes and adhesion measurement of functional surface coating on magnesium alloys[J].Gongneng Cailiao/journal of Functional Materials,2012,43(14):553(高正源,潘复生.镁合金表面功能涂层制备与界面表征技术的研究进展[J].功能材料,2012(12):1817)
[5]Gao Z,Pan F.Investigation on microstructure and mechanical properties of nano-ceramic coating on AZ31 magnesium alloys[J].Journal of Chongqing University,2012,35(7):67(高正源,潘复生.AZ31镁合金表面纳米陶瓷涂层的组织与力学性能分析[M].重庆大学学报,2012,35(7):67)
[6]Gao Z Y,Pan F S,Tang A T,et al.Investigation on corrosion and wear resistance of AZ31 magnesium alloy by single layer nanocrystalline Al2O3thin film[J].Journal of Functional Materials,2013,44(8):1069(高正源,潘复生,汤爱涛等.AZ31镁合金表面纳米Al2O3涂层的耐蚀耐磨性能研究[J].功能材料,2013,44(8):1069)
[7]Song G L.Corrosion and Protection of Magnesium Alloy[M].Beijing:Chemical Industrial Press,2006:6(宋光玲.镁合金腐蚀与防护[M].北京:化学工业出版社,2006:6)
[8]Wu B R.Organic-inorganic Hybrid Material and Its Application[M].Beijing:Chemical Industrial Press,2005:5(吴壁耀,张超灿.有机-无机杂化材料及其应用[M].北京:化学工业出版社,2005:5)
[9]Guo X H.Effect of Sol Compositions on Corrosion Protection of SNAP Film Coated on Magnesium Alloy[J].Chinese Journal of Inorganic Chemistry,2009,25(7):1254(郭兴华,安茂忠,杨培霞,李海先.SNAP溶胶组成对镁合金涂层耐蚀性的影响[J].无机化学学报,2009,25(7):1254)
[10]Wang H L.Study on organic inorganic hybrid materials of organic polymer/Si O2[M].Hefei:Hefei Industry University Press,2007:10(王华林.有机聚合物/Si O2有机-无机杂化材料的研究[M].合肥:合肥工业大学出版社,2007:10)
[11]Zheng W T.Thin film materials and thin film technology[M].Beijing:Chemical Industrial Press,2007:1(郑伟涛.薄膜材料与薄膜技术[M].北京:化学工业出版社,2007:1)
[12]F.Zanotto,V.Grassi,A.Frignani,F.Zucchi.Protection of the AZ31 magnesium alloy with cerium modified silane coatings[J].Materials Chemistry and Physics,2011,129(1-2):1
[13]Lamaka S V,Montemor M F,Galio A F,et al.Novel hybrid solgel coatings for corrosion protection of AZ31B magnesium alloy[J].Electrochimica Acta,2008,53(14):4773
[14]Xu B S.Nano-surface-engineering[M].Beijing:Chemical Industrial Press,2003:9(徐滨士.纳米表面工程[M].北京:化学工业出版社,2003:9)
[15]Wang X H,Sun Y M,Liu S H,et al.Preparation and corrosion characterization of organic-inorganic hybrid coatigns[J].Corrosion Science&Protection Technology,2006,18(4):292(王秀华,孙益民,刘守华等.有机-无机杂化涂层制备及耐腐蚀性能研究[J].腐蚀科学与防护技术,2006,18(4):292)
[16]Zhou S H.Preparation of PDMS/Si O2hybrid material and its application in the protection of ancient ivory[D].Chengdu University of Technology,2008:3(周述慧.PDMS/Si O2杂化材料的制备及其在古象牙保护中的应用[D].成都理工大学,2008:3)
[17]Huang C Z,Ai X,Hou Z G,et al.Status quo in the research and application of sol-gel method[J].Materials Review,1997,11(3):8(黄传真,艾兴,侯兴刚等.溶胶-凝胶法的研究和应用现状[J].材料导报,1997,11(3):8)
[18]Bing L.Progress of Organic/Inorganic Hybrid Optical-Functional Materials Prepared by the Sol-Gel Method[J].Progress in Chemistry,2005(1):85(刘冰,强亮生.溶胶-凝胶法制备光学杂化功能材料[J].化学进展,2005,17(1):85)
[19]Huang J F.The principle and technology of Sol-Gel[M].Beijing:Chemical Industrial Press,2005:9(黄剑锋.溶胶-凝胶原理与技术[M].北京:化学工业出版社,2005:9)
[20]Gan G.Films Via Sol Gel Technique and it′s Applications[J].Journal of Kunming University Ofence&Technology,1997,22(1):143(甘友国,郭玉忠,苏云生.溶胶-凝胶法薄膜制备工艺及其应用[J].昆明理工大学学报,1997,22(1):143)
[21]Lin B,Liu H,Zeng W,et al.Study on Surface Structure and Corrosion Resistance of AZ91 Alloy After Injecting Ion[J].Hot Working Technology,2010,39(12):117(林波,刘洪喜,曾维华等.离子注入AZ91镁合金表面结构和耐蚀性能研究[J].热加工工艺,2010,39(12):117)