TiAl合金表面NiCrAlY涂层的抗高温氧化性能
High Temperature Oxidation Resistance of NiCrAlY Coating on Surface of TiAl Alloy
摘 要
采用多弧离子镀技术在γ-TiAl合金表面制备了NiCrAlY涂层, 用SEM、EDS和XRD 等分析了涂层在高温氧化前后的形貌、结构和物相组成, 用恒温氧化方法测试了涂层与基体的氧化动力学曲线。结果表明: 涂层在高温下可形成保护性氧化膜, 使其抗氧化性能显著提升; 在650~950 ℃氧化时, 镍和钛元素发生互扩散, 850 ℃时, 涂层与基体之间形成了扩散带和齿状TiNi相, 950 ℃时, 互扩散现象加剧, 涂层表面生成了TiO2, 涂层氯化膜与基体间形成了Kirkendall孔洞, 对其抗高温氧化性能不利。
多弧离子镀技术
NiCrAlY涂层
高温氧化
γ-TiAl alloy
multi arc ion plating technology
NiCrAlY coating
high temperature oxidation
Abstract
A NiCrAlY coating was deposited on the surface of γ-TiAl alloy by multi-arc ion plating (MAIP). The morphology, microstructure and phase composition of the coating were investigated by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and X-ray diffraction (XRD). The oxidation kinetic curves of the substrate and coating were obtained by oxidation at constant temperature. Results indicate that a layer of protective oxide film forming on the coating at high temperature could significantly improve the oxidation resistance of TiAl alloy. Mutual diffusion of Ni, Ti elements happened at 650-950 ℃. A diffusion zone and dentate TiNi phase between the coating and the substrate were found at 850 ℃, then at 950 ℃ the phenomenon of mutual diffusion aggravated, TiO2 generated on the coating surface, which resulted in Kirkendall pores at the interface between the coating oxide film and the substrate. This was not benifical to improve the high temperature oxidation resistance.
中图分类号 TG174.445
所属栏目 材料性能及其应用
基金项目 国家自然科学基金资助项目(51175247); 江苏省研究生创新基金项目(CXZZZ11-0203); 南京航空航天大学研究生创新基地(实验室)开放基金资助项目(kfjj120123)
收稿日期 2012/11/5
修改稿日期 2013/10/18
网络出版日期
作者单位点击查看
备注周鹏(1990-), 男, 江西景德镇人, 硕士研究生。
引用该论文: ZHOU Peng,ZHANG Ping-ze,WEI Dong-bo,WEI Xiang-fei,ZHANG Yang. High Temperature Oxidation Resistance of NiCrAlY Coating on Surface of TiAl Alloy[J]. Materials for mechancial engineering, 2014, 38(2): 63～67
周鹏,张平则,魏东博,魏祥飞,张扬. TiAl合金表面NiCrAlY涂层的抗高温氧化性能[J]. 机械工程材料, 2014, 38(2): 63～67
被引情况:
【1】任鑫,玄兹航,曹丹凤,孔令梅,朱鹤, "NiCr-CrAl涂层的高温氧化行为",机械工程材料 39, 16-19(2015)
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【2】YE H Q. Recent developments in Ti3Al and TiAl intermeta-llics research in China ［J］.Materials Science and Engineering:A,1999,263: 289-295.
【3】YANG R, CUI Y Y, DONG L M, et al. Alloy development and shell mould casting of gamma TiAl［J］.J Mater Process Technol,2003,135(2/3):179-188.
【4】彭小敏, 夏长清, 王志辉, 等.TiAl基合金高温氧化及防护的研究进展［J］.中国有色金属学报,2010,20(6):1116-1130.
【5】张重远,李美姮,孙晓峰,等.单晶高温合金溅射 NiCrAlY 微晶涂层的循环氧化行为［J］.机械工程材料,2001,25(9):7-9.
【6】RHYSJONES T N.Coatings for blade and vane applications in gas-turbines［J］.Corrosion Science, 1989,29(6):623-646.
【7】TAWANCY H M,ABBAS N M,BENNETT A. Role of Y during high temperature oxidation of an MCrAlY coating on a Ni-base superalloy［J］.Surface ＆ Coatings Technology, 1994, 68:10-16.
【8】郑婷,骆心怡,孙晓宾,等.钛合金表面抗氧化技术的研究进展［J］.机械工程材料,2010,34(4):11-13.
【9】王 冰,卢春燕,孙 超,等.NiCrAlY涂层对Ni基高温合金K17抗氧化性能的影响［J］.腐蚀科学与防护技术,2002,14(1):7-10.
【10】VETTER J, KNOTEK O, BRAND J, et al. MCrAlY coatings deposited by cathodic vacuum arc evaporation［J］.Surface and Coatings Technology,1994,68/69:27-31.
【11】张钧,赵彦辉.多弧离子镀技术与应用［M］.北京:冶金工业出版社,2007.
【12】崔文芳,罗国珍,周廉.氧在Ti-1100 高温钛合金氧化中的扩散规律［J］.东北大学学报: 自然科学版,1998,19(1):19-22.
【13】夏长清,李佳,古一,等.NiCrAlY 涂层/TC4基体界面反应机理［J］.中南大学学报:自然科学版,2005,36(4):550-553.
【14】LIU Hai-ping, HAO Shan-shan, WANG Xiao-hong, et al. Interaction of a near-α type titanium alloy with NiCrAlY coating at high temperatures［J］.Script Materialia,1998,36(10):1443-1450.
【15】周宏明,易丹青.钴基高温合金表面电弧离子镀NiCrAlY涂层的抗高温氧化性能［J］.机械工程材料,2007,31(12):15-18.
【16】GARBACZ H, LEWANDOWSKA M. Microstructural changes during oxidation of titanium alloys［J］.Materials Chemistry and Physics, 2003,81(2/3):542-547.
【17】李美栓.金属的高温腐蚀［M］.北京: 冶金工业出版社, 2001.
【18】魏东博,张平则,姚正军,等. TC4合金双辉等离子渗Cr高温氧化行为［J］.材料热处理学报,2011,32(10):146-150.
【19】彭小敏,夏长清,王金惠,等. TC4钛合金沉积NiCrAlY涂层的氧化行为［J］.中国有色金属学报,2008,18(4):601-607.
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