掺杂镍对镁合金表面冷喷涂锌基涂层性能的影响
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摘要
目的研究镍添加对冷喷涂锌基涂层耐蚀性的影响,为镁合金提供有效的防护涂层。方法采用低压冷喷涂技术在镁合金基体表面分别制备锌基和锌/镍基复合涂层,通过微观观察、摩擦磨损实验、电化学极化法和电化学阻抗谱测试及全浸泡腐蚀试验,研究镁合金表面冷喷涂涂层的结构、摩擦磨损行为和耐蚀性。结果镁合金表面冷喷涂锌基涂层后,其硬度和耐磨性得到显著提高,掺镍后的锌/镍基涂层具有更高的硬度和耐磨性。锌基和锌/镍基涂层均能为镁合金提供腐蚀防护,锌/镍基涂层比锌基涂层具有更好的耐蚀性。相对镁合金来说,锌基涂层和锌/镍基涂层的自腐蚀电位分别正移了260 mV和560 mV;长期腐蚀后锌/镍基涂层形成了更致密的腐蚀产物膜,腐蚀电阻显著高于锌基涂层。结论冷喷涂锌基和锌/镍复合涂层均能对镁合金提供防护作用,掺杂镍后的锌/镍基复合涂层具有更高的硬度、耐磨性和耐蚀性。
The work aims to study the effect of nickel addition on the corrosion resistance of cold sprayed Zn-based coatings and provide an effective protective coating for magnesium alloys. Zn-based coatings and Zn/Ni-based composite coatings were deposited on Mg alloy respectively by low pressure cold spray(LPCS) method. The structure, friction-wear behavior and corrosion resistance of the cold sprayed coatings on Mg alloy were investigated by microscopic observation, friction and wear experiment, electrochemical polarization method, electrochemical impedance spectrum test and total immersion corrosion test. The hardness and wear resistance of Mg alloy surface were improved significantly after cold sprayed Zn-based and Zn/Ni-based coatings, coating was while deposited and Zn/Ni-based coatings had higher hardness and resistance corrosion. Both of the Zn-based and Zn/Ni-based coatings could provide corrosion protection for Mg alloys, while Zn/Ni-based coating showed better corrosion resistance than Zn-based coating. In comparison with bare Mg alloy, the free corrosion potential of Zn-based coating and Zn/Ni-based coating was positively shifted by 260 m V and 560 m V, respectively. After long-term corrosion, the Zn/Ni-based coating formed a denser corrosion product layer, accompanied with higher corrosion resistance value than the Zn-based coating sample. Cold sprayed Zn-based and Zn/Ni-based coatings can both provide corrosion protection for Mg alloy,but Zn/Ni-based composite coating has better hardness and wear and corrosion resistance.
The work aims to study the effect of nickel addition on the corrosion resistance of cold sprayed Zn-based coatings and provide an effective protective coating for magnesium alloys. Zn-based coatings and Zn/Ni-based composite coatings were deposited on Mg alloy respectively by low pressure cold spray(LPCS) method. The structure, friction-wear behavior and corrosion resistance of the cold sprayed coatings on Mg alloy were investigated by microscopic observation, friction and wear experiment, electrochemical polarization method, electrochemical impedance spectrum test and total immersion corrosion test. The hardness and wear resistance of Mg alloy surface were improved significantly after cold sprayed Zn-based and Zn/Ni-based coatings, coating was while deposited and Zn/Ni-based coatings had higher hardness and resistance corrosion. Both of the Zn-based and Zn/Ni-based coatings could provide corrosion protection for Mg alloys, while Zn/Ni-based coating showed better corrosion resistance than Zn-based coating. In comparison with bare Mg alloy, the free corrosion potential of Zn-based coating and Zn/Ni-based coating was positively shifted by 260 m V and 560 m V, respectively. After long-term corrosion, the Zn/Ni-based coating formed a denser corrosion product layer, accompanied with higher corrosion resistance value than the Zn-based coating sample. Cold sprayed Zn-based and Zn/Ni-based coatings can both provide corrosion protection for Mg alloy,but Zn/Ni-based composite coating has better hardness and wear and corrosion resistance.
引文
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[19]刘彦学,袁晓光,吕楠,等.镁合金表面锌铝合金冷喷涂层的磨损行为[J].沈阳工业大学学报,2005,27(4):385-388.LIU Yan-xue,YUAN Xiao-guang,LYU Nan,et al.Wear behavior of cold spray Zn-Al alloy coating on magnesium alloy[J].Journal of Shenyang University of Technology,2005,27(4):385-388.
[20]李凌杰,于生海,雷惊雷,等.AZ31和AZ61镁合金在模拟海水中的腐蚀电化学行为[J].电化学,2008,14(1):95-99.LI Ling-jie,YU Sheng-hai,LEI Jing-lei,et al.Corrosion electrochemical behavior of AZ31 and AZ61 magnesium alloys in simulated sea water[J].Electrochemistry,2008,14(1):95-99.
[21]SONG D,MA A B,JIANG J H,et al.Corrosion behavior of equal-channel-angular-pressed pure magnesium in NaCl aqueous solution[J].Corrosion science,2010,52(2):481-490.
[22]孔纲,卢锦堂,车淳山,等.热镀锌钢白锈产生原因分析及预防[J].腐蚀与防护,2005,26(10):450-452.KONG Gang,LU Jin-tang,CHE Chun-shan,et al.Analyses of formation of white rust on hot-dip galvanized steel and relevant counter measures[J].Corrosion&protection,2005,26(10):450-452.
[23]郑桾,王树林,侯臣,等.超声化学法合成Zn5(OH)8Cl2?H2O以及高温转化ZnO和光催化性能研究[J].功能材料,2015,46(7):7138-7142.ZHENG Jun,WANG Shu-lin,HOU Chen,et al.Sonochemical fabrication of Zn5(OH)8Cl2?H2O and its conversion into ZnO,photocatalytic performance[J].Journal of functional materials,2015,46(7):7138-7142.
[2]刘松,杨俊杰.镁合金耐蚀性及稀土对其影响的研究进展[J].金属材料与冶金工程,2016(5):58-62.LIU Song,YANG Jun-jie.Research on corrosion resistance of magnesium alloys and the effect of rare earth[J].Metal materials&metallurgy engineering,2016(5):58-62.
[3]陈曙光.镁合金板带生产应用现状与发展前景[J].世界有色金属,2016(4):124-125.CHEN Shu-guang.Magnesium alloy strips production,application status and development prospects[J].World nonferrous metals,2016(4):124-125.
[4]邱六,朱胜,王晓明,等.镁合金腐蚀与防护的研究现状[J].热加工工艺,2018(16):31-35.QIU Liu,ZHU Sheng,WANG Xiao-ming,et al.Research status of corrosion and protection of magnesium alloys[J].Hot working technology,2018(16):31-35.
[5]赵国锋,王莹莹,张海龙,等.冷喷涂设备及冷喷涂技术应用研究进展[J].表面技术,2017,46(11):198-205.ZHAO Guo-feng,WANG Ying-ying,ZHANG Hai-long,et al.Application of cold spraying equipment and cold spraying technology[J].Surface technology,2017,46(11):198-205.
[6]虞思琦,杨夏炜,王非凡,等.镁合金表面冷喷涂层防护研究进展[J].表面技术,2018,47(5):43-53.YU Si-qi,YANG Xia-wei,WANG Fei-fan,et al.Protection for cold sprayed coatings on magnesium alloy[J].Surface technology,2018,47(5):43-53.
[7]TAO Y S,XIONG T Y,SUN C,et al.Microstructure and corrosion performance of a cold sprayed aluminium coating on AZ91D magnesium alloy[J].Corrosion science,2010,52(10):3191-3197.
[8]贾利,崔烺,郑子云,等.镁合金表面冷喷涂纳米铝锌涂层及其腐蚀性能研究[J].热加工工艺,2017(2):137-138.JIA Li,CUI Lang,ZHENG Zi-yun,et al.Study on corrosion behavior of cold-sprayed nanocrystalline Al-Zn coating on magnesium alloy surface[J].Hot working technology,2017(2):137-138.
[9]HAO Y,WANG J Q,CUI X Y,et al.Microstructure characteristics and mechanical properties of Al-12Si coatings on AZ31 magnesium alloy produced by cold spray technique[J].Thermal spray technology,2016,25(5):1020-1028.
[10]LIU Y X,YUAN X G,LV Nan,et al.Wear behavior of cold spray Zn-Al alloy coating on magnesium alloy[J].Journal of Shenyang University of Technology,2005,27(4):385-388.
[11]CHEN J,MA B,LIU G,et al.Wear and corrosion properties of 316L-Si C composite coating deposited by cold spray on magnesium alloy[J].Thermal spray technology,2017,26(1):1-12.
[12]WEI Y K,LI Y J,ZHANG Y,et al.Corrosion resistant nickel coating with strong adhesion on AZ31B magnesium alloy prepared by an in-situ shot-peening-assisted cold spray[J].Corrosion science,2018,138:105-115
[13]石仲川,张晓云,汤智慧,等.300M钢表面冷喷涂锌镍复合涂层性能研究[J].表面技术,2016,45(6):100-106.SHI Zhong-chuan,ZHANG Xiao-yun,TANG Zhi-hui,et al.Properties of cold spray Zn/Ni coatings on 300Msteel[J].Surface technology,2016,45(6):100-106.
[14]张晓云,石仲川,郭孟秋,等.冷喷涂Zn-Ni复合涂层形貌及性能[J].热喷涂技术,2014,6(2):6-13.ZHANG Xiao-yun,SHI Zhong-chuan,GUO Meng-qiu,et al.The effect of pre-treatment and post-treatment on properties of cold spray Zn-Ni composite coating[J].Thermal spray technology,2014,6(2):6-13.
[15]黄国胜,李相波,邢路阔,等.冷喷涂锌镍合金层的组织结构及耐蚀性[J].材料保护,2013,46(4):1-4.HUANG Guo-sheng,LI Xiang-bo,XING Lu-kuo,et al.Microstructure and corrosion resistance of cold-sprayed zinc-nickel alloy coatings[J].Journal of materials protection,2013,46(4):1-4.
[16]苏欣,邢路阔,程旭东,等.热处理对冷喷涂锌镍涂层组织结构及电化学性能的影响[J].金属热处理,2015,40(3):96-99.SU Xin,XING Lu-kuo,CHENG Xu-dong,et al.Effects of heat treatment on microstructure and electrochemical performance of cold sprayed Zn-Ni coating[J].Heat treatment of metals,2015,40(3):96-99.
[17]TAO Y S,XIONG T Y,SUN C,et al.Effect ofα-Al2O3on the properties of cold sprayed Al/α-Al2O3 composite coatings on AZ91D magnesium alloy[J].Applied surface science,2009,256(1):261-266.
[18]马颖,任峻,陈体军,等.AZ91D镁合金的摩擦磨损行为及其机理探讨[J].兰州理工大学学报,2006,32(1):33-36.MA Ying,REN Jun,CHEN Ti-jun,et al.Inquiry of friction and wear behavior and mechanism of AZ91D magnesium alloy[J].Journal of Lanzhou University of Technology,2006,32(1):33-36.
[19]刘彦学,袁晓光,吕楠,等.镁合金表面锌铝合金冷喷涂层的磨损行为[J].沈阳工业大学学报,2005,27(4):385-388.LIU Yan-xue,YUAN Xiao-guang,LYU Nan,et al.Wear behavior of cold spray Zn-Al alloy coating on magnesium alloy[J].Journal of Shenyang University of Technology,2005,27(4):385-388.
[20]李凌杰,于生海,雷惊雷,等.AZ31和AZ61镁合金在模拟海水中的腐蚀电化学行为[J].电化学,2008,14(1):95-99.LI Ling-jie,YU Sheng-hai,LEI Jing-lei,et al.Corrosion electrochemical behavior of AZ31 and AZ61 magnesium alloys in simulated sea water[J].Electrochemistry,2008,14(1):95-99.
[21]SONG D,MA A B,JIANG J H,et al.Corrosion behavior of equal-channel-angular-pressed pure magnesium in NaCl aqueous solution[J].Corrosion science,2010,52(2):481-490.
[22]孔纲,卢锦堂,车淳山,等.热镀锌钢白锈产生原因分析及预防[J].腐蚀与防护,2005,26(10):450-452.KONG Gang,LU Jin-tang,CHE Chun-shan,et al.Analyses of formation of white rust on hot-dip galvanized steel and relevant counter measures[J].Corrosion&protection,2005,26(10):450-452.
[23]郑桾,王树林,侯臣,等.超声化学法合成Zn5(OH)8Cl2?H2O以及高温转化ZnO和光催化性能研究[J].功能材料,2015,46(7):7138-7142.ZHENG Jun,WANG Shu-lin,HOU Chen,et al.Sonochemical fabrication of Zn5(OH)8Cl2?H2O and its conversion into ZnO,photocatalytic performance[J].Journal of functional materials,2015,46(7):7138-7142.
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