刘林涛,李争显,胡祯,李江涛

• 1:西安建筑科技大学冶金工程学院
• 2:西北有色金属研究院腐蚀与防护研究所
• 3:陕西省稀有金属表面技术工程研究中心
• 4:东北大学材料科学与工程学院

摘要(Abstract)：

采用电子束物理气相沉积技术(EB-PVD)在Rene N5镍基高温合金表面分别制备出N5/NiCrAlY和N5/ZrO_2/NiCrAlY两种涂层体系试样,并对其进行1000℃/5 h和1000℃/350 h高温氧化处理。利用SEM、EDS、XRD等分析方法对比研究了高温环境中镍基合金基体与NiCrAlY粘结层界面的演变行为以及ZrO_2活性扩散障对界面演变的控制作用。结果表明,N5/NiCrAlY体系涂层在高温环境中由于各元素浓度的差异会发生元素互扩散行为,导致在基体/NiCrAlY涂层界面处形成柯肯达尔孔洞,二次反应区及TCP相;而对于N5/ZrO_2/NiCrAlY涂层体系而言,在高温环境中,其ZrO_2活性扩散障将演变为Al_2O_3/Zr-rich/Al_2O_3三层结构,该结构能够有效抑制基体与粘结层之间的元素互扩散行为,阻止二次反应区及TCP相的出现,并且该结构具有良好的高温稳定性能。

关键词(KeyWords)： 元素互扩散;扩散障;抗氧化性能;热障涂层

Abstract:

Keywords:

基金项目(Foundation): 国家基础研究发展计划(2012CB625102);; 西安建筑科技大学博士创新基金(6040300566);; 陕西省海洋先进金属材料创新团队(2016KCT-27)

作者(Author): 刘林涛,李争显,胡祯,李江涛

DOI: 10.13289/j.issn.1009-6264.2016.s1.018

参考文献(References)：

• [1]Nitin P P,Maurice G,Eric H J.Thermal barrier coatings for gas-turbine engine applications[J].Science,2002(296):280-284.
• [2]Li W Z,Li Y Q,Wang Q M,et al.Oxidation of a Ni Cr Al YSi overlayer with or without a diffusion barrier deposited by one-step arc ion plating[J].Corrosion Science,2010,5(52):1753-1761.
• [3]Bozza F,Bolelli Giovanni,Giolli Carlo,et al.Diffusion mechanisms and microstructure development in pack aluminizing of Ni-based alloys[J].2014,(239):147-159.
• [4]Liu J K,Cao J,Lin X T,et al.Microstructure and mechanical properties of diffusion bonded single crystal to polycrystalline Ni-based superalloys joint[J].Materials and Design 2013(49):622-626.
• [5]Wang R L,Gong X Y,Peng H,et al.Interdiffusion behavior between Ni Al Hf coating and Ni-based single crystal superalloy with different crystal orientations[J].Applied Surface Science,2014(326):124-130.
• [6]Tan X,Peng X,Wang F.The mechanism for self-formation of a Ce O2 diffusion barrier layer in an aluminide coating at high temperature[J].Surface and Coatings Technology,2013(224):62-70.
• [7]Wu D Q,Jia R,Yao J C,et al.Ni-Al-O diffusion barrier layer for high-κmetal-oxide-semiconductor capacitor[J].Thin Solid Films,2011,10(519):3358-3362.
• [8]Peng H,Guo H B,He J,et al.Cyclic oxidation and diffusion barrier behaviors of oxides dispersed Ni Co Cr Al Y coatings[J].Journal of Alloys and Compounds,2010,502(2):411.
• [9]Cean,Guo,Wen Wang,Yuxian Cheng,et al.Yttria partially stabilised zirconia as diffusion barrier between Ni Cr Al Y and Ni-base single crystal Rene N5 superalloy[J].Corrosion Science,2015(94):122-128.
• [10]Liu L T,Li Z X,Hua Y F,et al.α-Al2O3Active bifffusion barriers in the surface of Ni-based superalloy[J].Rare Metal Materials and Engineering,2014,43(11):2708-2712.

文章评论(Comment)：