Abstract:In order to control the composition and microstructure of corrosion-resistant aluminum coatings, a layer of pre-coating was deposited on Q235 steel surface by magnetron sputtering, and then corrosion-resistant aluminum coating with a certain thickness was prepared by hot dipping. Microstructure, thickness and chemical composition of aluminum coating were characterized by SEM equipped with EDS. The bonding strength of aluminum coating to substrate was tested by scratch test, and corrosion resistance was evaluated by salt water corrosion test. The results show that the coating obtained by magnetron sputtering combining with hot dipping is relatively denser. The aluminum coating prepared by both hot dipping and magnetron sputtering combining with hot dipping consists of an outer Al layer and an inner Fe-Al alloy layer. The thicknesses of Al layers are (45.75±6.41) μm and (44.84±3.17) μm, respectively. The thicknesses of Fe-Al alloy layers are (150.37±4.95) μm and (138.08±6.05) μm, respectively. The bonding strength between aluminum coating and substrate prepared by hot dipping is approximately 163.90N, while that prepared by magnetron sputtering combining with hot dipping is 160.25N. The corrosion mass loss rates of hot dip aluminizing Q235 steel and magnetron sputtering combining with hot dip aluminizing Q235 steel are about 1/12-1/6 of that of uncoated sample, and the corrosion pits of the latter one are more uniform.
王瑶, 赵雪妮, 党新安, 杨璞, 魏森森, 张伟刚, 刘庆瑶. 钢表面梯度结构耐腐蚀铝涂层的制备及研究[J]. 材料工程, 2019, 47(11): 148-154.
WANG Yao, ZHAO Xue-ni, DANG Xin-an, YANG Pu, WEI Sen-sen, ZHANG Wei-gang, LIU Qing-yao. Preparation and research of structure-gradient and corrosion-resistant aluminium coatings on steel surface. Journal of Materials Engineering, 2019, 47(11): 148-154.
[1] CORALI S,FOSSATI A,LAVACCHI A,et a1.Aluminum electroplated from ionic liquids as protective coating against steel corrosion[J].Corrosion Science,2008,50(2):534-539.
[2] 王玉江,马欣新,郭光伟,等.304不锈钢基体上无机熔融盐电镀铝研究[J].热处理技术与装备,2008,29(1):29-31. WANG Y J,MA X X,GUO G W,et al.The electrodeposition of aluminum on 304 stainless steel from an inorganic molten salts[J].Heat Treatment Technology and Equipment, 2008,29(1):29-31.
[3] 吴迪,刘炳,易大伟.热浸镀铝技术的研究进展及应用[J].电镀与精饰,2008,30(2):7-10. WU D,LIU B,YI D W.Application and research progress of hot dip aluminizing technology[J].Plating and Finishing, 2008,30(2):7-10.
[4] MALEDI N B,OLADIJO O P,BOTEF I.Influence of cold spray parameters on the microstructures and residual stress of Zn coatings sprayed on mild steel[J].Surface & Coatings Technology,2017,318:106-113.
[5] TAFRESHI M,ALLAHKARAM S R,FARHANGI H. Comparative study on structure, corrosion properties and tribological behavior of pure Zn and different Zn-Ni alloy coatings[J].Materials Chemistry and Physics,2016,183:263-272.
[6] 颜利丹,易盼,肖葵,等.纯锌及锌铝合金涂层的性能研究[J].腐蚀与防护,2015,36(增刊2):92-94. YAN L D,YI P,XIAO K,et al.The research of the pure zinc and Zn-Al alloy coating[J].Corrosion & Protection,2015,36(Suppl 2):92-94.
[7] 孙捷,万明攀.热浸镀锌和热浸镀铝钢铁件的耐蚀性能比较及应用[J].现代机械,2010(2):75-77. SUN J,WAN M P.Compartion of corrosion resisting properties of hot dip garvanizing and aluminium coating of steel parts and their application[J].Modern Machinery, 2010(2):75-77.
[8] DIAMANTOGIANNIS G,APOSTOLOPOULOS C A, NIKOLAKOPOULOS P G.Mechanical behavior of B500c steel with an aluminum layer coating in a marine environment[J].Journal of Materials in Civil Engineering, 2015,27(4):04014155-1-9.
[9] ESFAHANI E A,SALIMIJAZI H,GOLOZAR M A,et al.Study of corrosion behavior of arc sprayed aluminum coating on mild steel[J].Journal of Thermal Spray Technology,2012,1(6):1195-1202.
[10] LEMMENS B,SPRINGER H,GRAEVE I D,et al.Effect of silicon on the microstructure and growth kinetics of intermetallic phases formed during hot-dip aluminizing of ferritic steel[J].Surface & Coatings Technology,2017, 319:104-109.
[11] 胡芳,代明江,侯惠君,等.30CrMnSiNi2A钢紧固件磁控溅射铝膜的腐蚀和氢脆性能[J].中国表面工程,2016,29(5):41-48. HU F,DAI M J,HOU H J,et al.Corrosion resistance and hydrogen embrittlement performance of Al film deposited by magnetron sputtering on fasteners of 30CrMnSiNi2A steel[J].China Surface Engineering,2016,29(5):41-48.
[12] TAKAHASHI H,MATSUSHIMA H,UEDA M.Al film electrodeposition from the AlCl3-EMIC electrolyte under a magnetic field[J].Journal of the Electrochemical Society, 2017,164(8):5165-5168.
[13] LI N,LI W Y,YANG X W,et al.Effect of powder size on the long-term corrosion performance of pure aluminium coatings on mild steel by cold spraying[J].Materials and Corrosion, 2016,68(5):1-6.
[14] PATEL J,HUILGOL P,JAMNAPURA N,et al.Hot dip aluminizing of 9Cr-1Mo steels and their heat treatment[J]. Materials Science Forum,2015,830/831:143-146.
[15] TAKATA N,NISHIMOTO M,KOBAYASHI S,et al. Crystallography of Fe2Al5 phase at the interface between solid Fe and liquid Al[J].Intermetallics,2015,67:1-11.
[16] CHENG W J,WANG C J.Growth of intermetallic layer in the aluminide mild steel during hot-dipping[J].Surface & Coatings Technology,2009,204(6/7):824-828.
[17] LI K L,LIU Y,TU H,et al.Effect of Si on the growth of Fe-Al intermetallic layer in Zn-11%Al-3%Mg coating[J]. Surface & Coatings Technology,2016,306:390-396.
[18] AWAN G H,HASAN F U.Themorphology of coating/substrate interface in hot-dip aluminized steels[J]. Materials Science and Engineering:A,2008,472(1/2):157-165.
[19] 郭巧琴,蒋百灵,李建平,等.铝靶电流对磁控溅射A1Sn20镀层耐蚀性的影响[J].特种铸造及有色合金,2010,30(12):1150-1152. GUO Q Q,JIANG B L,LI J P,et al.Effect of target current on corrosion resistance of AlSn20 coating deposited by magnetron sputtering[J].The Chinese Journal of Nonferrous Metals,2010,30(12):1150-1152.
[20] KIM K S,LEE C H,HUH H,et al.Effect of stain rate on microstructure evolution and compressive deformation behavior of high-strength aluminum coating materials fabricated by the kinetic spray process[J].Materials Transactions,2015,56(4):605-609.
[21] HUILGOL P,UDUPA K R, BHAT K U.Metastable microstructures at the interface between AISI 321 steel and molten aluminum during hot-dip aluminizing[J].Surface &Coatings Technology,2018,348:22-30.
[22] CHEN J,LI X, HUA P,et al.Growth of intermetallic compound layers on CLAM steel by HDA and preparation of permeation barrier by oxidation[J].Fusion Engineering and Design,2017,125:57-63.
[23] TAKATA N,NISHIMOTO M,KOBAYASHI S,et al.Morphology and formation of Fe-Al intermetallic layers on iron hot-dipped in Al-Mg-Si alloy melt[J].Intermetallics, 2014,54(12):136-142.
[24] 黄珂,杨伏良,陈力学,等.划痕法测定TiAlN涂层结合强度的研究[J].表面技术,2013,42(5):107-111. HUANG K,YANG F L,CHEN L X,et al.Study on the adhesion strength of a TiAlN coating by scratch tester[J].Surface Technology,2013,42(5):107-111.
[25] SU F,ZHANG P,WEI D,et al.Corrosion behavior of hot-dip Al-Zn coating doped with Si, RE, and Mg during exposure to sodium chloride containing environments[J].Materials and Corrosion,2018,69(6):714-724.