锆合金表面镀Cr/TiAlN涂层的抗高温水蒸气氧化性能研究
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摘要
利用多弧离子镀技术在Zr-4合金表面制备了Cr+TiAlN复合涂层。采用多种分析手段研究了涂层在1200℃高温水蒸气环境下的抗氧化性能。利用X射线衍射分析涂层的物相成分;利用扫描电镜观察涂层表面的微观形貌;利用能谱对涂层元素种类与含量进行分析;采用自动划痕仪对涂层的力学性能进行检测。结果表明:多弧离子镀膜层表面均匀平整、致密度大,但存在一定数量的微孔洞及大颗粒。镀有Cr/TiAlN涂层试样的氧化速率远低于原始锆合金的氧化速率,抗高温水蒸气氧化性能优于原始Zr-4合金,且单位面积的氧化增重量仅为原始Zr-4合金的36%。划痕实验结果表明,膜基结合力为26 N,膜基结合性能良好。
Zr-4 alloy surfaces were modified with the Cr/TiAlN composite coatings synthesized by multi-arc ion plating(MAIP).The influence of the growth conditions of Cr/TiAlN coating on the surface oxidation resistance in 1200℃ steam,microstructures and interfacial adhesion was investigated with X-ray diffraction scanning electron microscopy,energy dispersive spectroscopy and conventional mechanical tools.The preliminary results show that the compact uniform Cr/TiAlN coatings significantly increased the steam oxidation resistance.To be specific,the Cr/TiAlN coatings,deposited under the optimized conditions,decreased the oxidation weight per unit-area of Zr-4 alloy to 36% in spite of some micro-pores and condensed large particles on the surfaces.In addition,the interface adhesion was estimated to be 26 N and no peeling-off was observed.
Zr-4 alloy surfaces were modified with the Cr/TiAlN composite coatings synthesized by multi-arc ion plating(MAIP).The influence of the growth conditions of Cr/TiAlN coating on the surface oxidation resistance in 1200℃ steam,microstructures and interfacial adhesion was investigated with X-ray diffraction scanning electron microscopy,energy dispersive spectroscopy and conventional mechanical tools.The preliminary results show that the compact uniform Cr/TiAlN coatings significantly increased the steam oxidation resistance.To be specific,the Cr/TiAlN coatings,deposited under the optimized conditions,decreased the oxidation weight per unit-area of Zr-4 alloy to 36% in spite of some micro-pores and condensed large particles on the surfaces.In addition,the interface adhesion was estimated to be 26 N and no peeling-off was observed.
引文
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[2] 黄鹤,邱长军,陈勇,等.锆合金表面磁控溅射与多弧离子镀Cr涂层的高温抗氧化性能[J].中国表面工程,2018,31(2):51-58
[3] 王浩然,邱长军,曾小安,等.温度对纯 Cr 涂层表面形貌和抗腐蚀性能的影响[J].表面技术,2017,46(6):192-196
[4] DAUB K,VAN NIEUWENHOVE R,NORDIN H.Investigation of the Impact of Coatings on Corrosion and Hydrogen up Take of Zircaloy-4[J].Journal of Nuclear Materials,2015,467:260-270
[5] PARK J H,KIM H G,PARK J Y,et al.High Temperature Steam-Oxidation Behavior of arc Ion Plated Cr Coatings for Accident Tolerant Fuel Claddings[J].Surface and Coatings Technology,2015,280:256-259
[6] ZHUANG Yuzhao,JIANG Xiaohong,ROGACHEV A V,et al.Influences of Pulse Frequency on the Structure and Anti-corrosion Properties of the Cr Films[J].Applied Surface Science,2015,351:1197-1203
[7] 周军,樊湘芳,丰振东,等.锆合金表面TiAlN和TiAlSiN涂层微观形貌和性能的研究[J].稀有金属与硬质合金,2017,45(6):66-69
[8] ZHANG Shihong,WANG Lei,WANG Qimin,et al.A Superhard Cr Al-SiN Superlattice Coating Deposited by a Multi-Arc Ion Plating:II.Thermal Stability and Oxidation Resistance[J].Surface & Coatings Technology,2013,214(2):153-159
[9] SAHA G C,KHAN T I.The Corrosion and Wear Performance of Microcrystalline WC-10Co-4Cr and Near-Na-Nocrystalline WC-17Co High Velocity Oxy-Fuel Sprayed Coatings on Steel Substrate[J].Metallurgical and Materials Transactions,2010,A41(11):3000-3009
[10] Ali F,Mehmood M,Qasim A M,et al.Comparative Study of the Structure and Corrosion Behavior of Zr-20% Cr and Zr-20% Ti Alloy Films Deposited by Multi-Arc Ion Plating Technique[J].Thin Solid Films,2014,564(2):277-283
[11] XU Y X,CHEN Li,YANG Bing,et al.Effect of CrN Addition on the Structure,Mechanical and Thermal Properties of TiAlN Coating[J].Surface & Coatings Technology,2013,235(12):506-512
[12] YOON S Y,KIM H,LEE K O,et al.Comparison for Mechanical Properties Between TiN And TiAlN Coating Layers by AIP Technique[J].Journal of Materials ProcessingTech,2002,130:260-265
[13] 周军,樊湘芳,丰振东,等.过渡层对TiAlSiN涂层性能的影响[J].真空科学与技术学报,2017,37(10):978-983
[14] WANG Haitao,JIANG Peigang,HUANG Liping.Influence of Cr2O3-Al2O3 Composite Oxide Scale on Oxidation Resistance of ZG40Cr24[J].Journal of Wuhan University of Technology.Materials Science Edition,2012,27(3):405-410
[15] 宋庆功,程立军.磁控溅射制备(Ti,Al,Cr)N硬质薄膜及其力学性能的研究[J].真空,2009,46(5):26-29
[16] KEUNECKE M,STEIN C,BEWILOGUA K,et al.Modified TiAlN Coatings Prepared by d.c.Pulsed Magnetron Sputtering[J].Surface & Coatings Technology,2010,205(5):1273-1278
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