黄腾,王胜民,张强,黄智权,赵晓军,刘磊,方奕鹏

• 1:昆明理工大学材料科学与工程学院
• 2:中铁十一局集团桥梁有限公司抚州工业分公司

摘要(Abstract)：

为改善Zn-Al共渗层的组织及性能，在渗剂中添加不同含量LaCl_3和CeCl_3,在Q235B碳钢表面制备了Zn-Al合金共渗层。采用扫描电镜(SEM)和X射线衍射仪(XRD)表征了渗层的组织、成分和物相，采用开路电位、极化曲线和电化学阻抗谱(EIS)及中性盐雾实验测试了渗层的电化学特性和耐盐雾性能，采用显微硬度仪测试分析了渗层的硬度。结果表明：渗剂中混合添加6%稀土化合物(LaCl_3、CeCl_3)时所获得的渗层表面更光滑，凹凸起伏更小，微观结构更为致密、裂纹更少，渗层厚度达到62μm;渗层中稀土元素均匀分布，但没有稀土金属化合物；当渗剂中混合添加6%稀土化合物(LaCl_3、CeCl_3)时，渗层的自腐蚀电流密度最小，为3.938×10~(-4) A·cm~(-2),自腐蚀电位正偏移最多，与混合稀土添加量为2%、4%和8%时的渗层相比，分别正移了53、42和13 mV,阻抗弧半径最大，表明此稀土添加量条件下渗层的耐电化学腐蚀性能最好；中性盐雾腐蚀试验120 h后，2%(La+Ce)、4%(La+Ce)、6%(La)、6%(Ce)的Zn-Al合金共渗层均出现大量白锈，6%(La+Ce)、8%(La+Ce)的Zn-Al合金共渗层白锈较少；中性盐雾腐蚀试验192 h后所有的渗层均出现黄褐色红锈斑点，但6%(La+Ce)的Zn-Al合金共渗层黄褐色红锈斑点更少，耐盐雾腐蚀性能更好。

关键词(KeyWords)： Zn-Al共渗;稀土化合物;电化学腐蚀;耐盐雾腐蚀性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 黄腾,王胜民,张强,黄智权,赵晓军,刘磊,方奕鹏

DOI: 10.13289/j.issn.1009-6264.2025-0010

参考文献(References)：

• [1] 张跃，姚长文，张灵宇，等.采用机械能助渗法制备渗锌层的显微组织与性能[J].机械工程材料，2014,38(11):60-65.ZHANG Yue,YAO Chang-wen,ZHANG Ling-yu,et al.Microstructure and properties of zincizing layer prepared by mechanical energy aided diffusing method[J].Materials For Mechanical Engineering,2014,38(11):60-65.
• [2] 武传杰，林志峰，李相波，等.渗锌涂层钢腐蚀行为的电化学阻抗谱研究[J].腐蚀科学与防护技术，2014,26(5):441-445.WU Chuan-jie,LIN Zhi-feng,LI Xiang-bo,et al.Electrochemical corrosion behavior of zinc powder sherardized carbon steel[J].Corrosion Science and Protection Technology,2014,26(5):441-445.
• [3] 杜存山，贾恒琼，王涛，等.锌铝合金共渗防腐技术[J].高速铁路新材料，2022,1(2):20-23.DU Cun-shan,JIA Heng-qiong,WANG Tao,et al.Anti-corrosion technique for zinc-aluminum alloy powder diffusion[J].Advanced Materials of High Speed Railway,2022,1(2):20-23.
• [4] 张琪，张潇华，成琳，等.渗镀温度对真空粉末渗锌涂层性能的影响[J].现代涂料与涂装，2020,23(7):11-14.ZHANG Qi,ZHANG Xiao-hua,CHENG Lin,et al.Effect of sherardizing temperature on properties of vacuum powder zinc coating[J].Modern Paint & Finishing,2020,23(7):11-14.
• [5] 徐鹏辉，王胜民，乐林江，等.温度和甲酸镍含量对制备Zn-Ni合金渗层的影响[J].材料导报，2023,37(16):209-216.XU Peng-hui,WANG Sheng-min,LE Lin-jiang,et al.Effects of temperature and nickel formate content on the preparation of Zn-Ni cementation layer[J].Materials Reports,2023,37(16):209-216.
• [6] Okamoto N L,Inomoto M,Takebayashi H,et al.Crystal structure refinement of the Γ- and Γ1-Phase compounds in the Fe-Zn system and orientation relationships among α-Fe,Γ and Γ1 phases in the coating layer of galvannealed steel[J].Journal of Alloys and Compounds,2018,732:52-63.
• [7] Sipa H K.Zinc coating deposition with new thermal diffusion process on low carbon steel substrates[J].Hutnik,Wiadomosci Hutnicze,2019,86(1):125-130.
• [8] 肖林林，班塞迷塔，郑楠楠，等.特种车辆连接件复合粉末渗锌与锌铝共渗工艺对比[J].车辆与动力技术，2019(3):52-56.XIAO Lin-lin,BANSAI Mi-ta,ZHENG Nan-nan,et al.Comparison of powder zinc penetration and zinc-aluminum process for special vehicle connectors[J].Vehicle & Power Technology,2019(3):52-56.
• [9] 李微，黄煌，黄伟颖，等.钢表面粉末包埋渗铝的表面状态及元素扩散机理研究进展[J].中国表面工程，2021,34(3):25-39.LI Wei,HUANG Huang,HUANG Wei-ying,et al.Research progress on surface state and element diffusion mechanism of steel with surface coating prepared by pack aluminizing method[J].China Surface Engineering,2021,34(3):25-39.
• [10] 张冀翔，徐修炎，钱程，等.碳钢表面粉末包埋法渗铝的实验研究[J].表面技术，2018,47(12):68-75.ZHANG Ji-xiang,XU Xiu-yan,QIAN Cheng,et al.Experimental study on aluminizing of carbon steel surface by pack cementation[J].Surface Technology,2018,47(12):68-75.
• [11] Zhan Z,Liu Z,Liu J,et al.Microstructure and high-temperature corrosion behaviors of aluminide coatings by low-temperature pack aluminizing process[J].Applied Surface Science,2010,256(12):3874-3879.
• [12] 张冀翔，徐修炎，宋健斐，等.粉末包埋渗铝研究进展[J].热加工工艺，2018,47(4):22-25.ZHANG Ji-xiang,XU Xiu-yan,SONG Jian-fei,et al.Research progress of pack cementation aluminizing[J].Hot Working Technology,2018,47(4):22-25.
• [13] 张涛.五金紧固件锌铝复合涂层及其防腐蚀性能[J].腐蚀与防护，2015,36(6):560-562.ZHANG Tao.Anti-corrosion performance of Zinc-aluminum composite coatings on fasteners[J].Corrosion & Protection,2015,36(6):560-562.
• [14] Gurol U,Altina Y,Gunen A,et al.Effect of powder-pack aluminizing on microstructure and oxidation resistance of wire arc additively manufactured stainless steels[J].Surface and Coatings Technology,2023,468:129742.
• [15] Zhou Z,Xie F,Hu J.A novel powder aluminizing technology assisted by direct current field at low temperatures[J].Surface and Coatings Technology,2008,203(1/2):23-27.
• [16] Sun Y,Dong J,Zhao P,et al.Formation and phase transformation of aluminide coating prepared by low-temperature aluminizing process[J].Surface and Coatings Technology,2017,330:234-240.
• [17] 孟堃，刘忠，王远，等.碳钢粉末包埋低温渗铝工艺的研究进展[J].热加工工艺，2016,45(24):31-34.MENG Kun,LIU Zhong,WANG Yuan,et al.Research progress of embedding low-temperature aluminizing process for carbon steel powder[J].Hot Working Technology,2016,45(24):31-34.
• [18] 李春红，杜安，马瑞娜，等.42CrMo钢锌铝共渗层的组织及性能[J].金属热处理，2017,42(10):47-51.LI Chun-hong,DU An,MA Rui-na,et al.Microstructure and properties of Zn-Al thermochemical treated on 42CrMo steel[J].Heat Treatment of Metals,2017,42(10):47-51.
• [19] 王德仁，张昭恩，李德志，等.渗铝、渗锌和锌铝共渗钢的抗蚀性能[C]//第二届石油石化工业用材研讨会，成都，2001:49-53.
• [20] 杨延平，陈轩，陈雁，等.炼油厂换热器管束锌铝稀土共渗防腐蚀技术[J].石油化工腐蚀与防护，2011,28(4):33-35.YANG Yan-ping,CHEN Xuan,CHEN Yan,et al.Zn-Al-rare earth diffusion corrosion protection technology of refinery heat exchanger tubes[J].Corrosion & Protection in Petrochemical Industry,2011,28(4):33-35.
• [21] 陈颢，朱嵩，羊建高，等.稀土在材料表面工程中的研究进展[J].江西有色金属，2009,23(3):38-41.CHEN Hao,ZHU Song,YANG Jian-gao,et al.Present situation on research of rare earth in materials surface engineering[J].Nonferrous Metals Science and Engineering,2009,23(3):38-41.
• [22] 刘丽，于思荣.稀土Y的添加对粉末包埋渗锌涂层耐腐蚀性能的影响[J].腐蚀科学与防护技术，2018,30(5):475-480.LIU Li,YU Si-rong.Effects of Y addition on corrosion resistance of pack cementation zinc coating on 42CrMo steel[J].Corrosion Science and Protection Technology,2018,30(5):475-480.
• [23] 纪文文，宋月鹏，陈克丰，等.稀土元素对40Cr钢渗铝层组织性能的影响研究[J].稀土，2009,30(6):55-59.JI Wen-wen,SONG Yue-peng,CHEN Ke-feng,et al.Effects of RE elements on the microstructure and properties of aluminizing layer of 40Cr steel[J].Chinese Rare Earths,2009,30(6):55-59.
• [24] 东晓林，黄燕滨，时小军，等.采用稀土化学活化处理的锌粉制备渗锌层及其耐蚀性[J].电镀与涂饰，2016,35(11):571-574.DONG Xiao-lin,HUANG Yan-bin,SHI Xiao-jun,et al.Preparation and corrosion resistance of sherardized coating using zinc power chemically activated by rare earth[J].Electroplating & Finishing,2016,35(11):571-574.
• [25] 杨烁.稀土对套管钢粉末包埋渗铝组织和性能的影响研究[D].大庆：东北石油大学，2020.YANG Shuo.Research on the effect of rare earth on microstructure and properties of casing steel packing cementation aluminizing[D].Daqing:Northeast Petroleum University,2020.
• [26] He Y,Li D,Wang D,et al.Corrosion resistance of Zn-Al co-cementation coatings on carbon steels[J].Materials Letters,2002,56(4):554-559.
• [27] Xue Q,Sun C Y,Yu J Y,et al.Microstructure evolution of a Zn-Al coating co-deposited on low-carbon steel by pack cementation[J].Journal of Alloys and Compounds,2017,699:1012-1021.
• [28] Shen T H,Tsai C Y,Lin C S.Growth behavior and properties of Zn-Al pack cementation coatings on carbon steels[J].Surface and Coatings Technology,2016,306:455-461.
• [29] 辛江萍，胡水平，张思远，等.稀土元素La对金属表面粉末渗锌层组织结构和性能的影响[J].稀有金属材料与工程，2022,51(5):1887-1895.XIN Jiang-ping,HU Shui-ping,ZHANG Si-yuan,et al.Effect of rare earth element La on the structure and properties of the powder sheradizing layers on the metal surface[J].Rare Metal Materials and Engineering,2022,51(5):1887-1895.
• [30] Jin G,Lu B W,Hou D D,et al.Influence of rare earths addition on residual stress of Fe-based coating prepared by brush plating technology[J].Journal of Rare Earths,2016,34(3):336-340.
• [31] 徐鹏辉，王胜民，乐林江，等.Zn-Ni合金渗层的组织结构及腐蚀性能[J].中国表面工程，2022,35(1):135-143.XU Peng-hui,WANG Sheng-min,LE Lin-jiang,et al.Microstructure and corrosion properties of Zn-Ni co-cementation layer[J].China Surface Engineering,2022,35(1):135-143.
• [32] Tong J B,Liang Y,Wei S C,et al.Microstructure and corrosion resistance of Zn-Al diffusion layer on 45 steel aided by mechanical energy[J].Materials,2019,12(18):3032.

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