宋闪光,王伟,谭世磊,王莉莉.稀土掺杂Gd2O3对YSZ/(Ni,Al)热障涂层组织与性能的影响[J].表面技术,2016,45(3):109-114.
SONG Shan-guang,WANG Wei,TAN Shi-lei,WANG Li-li.Effect of rare earth doped Gd2O3 on Microstructure and properties of YSZ/(Ni, Al) composite coatings[J].Surface Technology,2016,45(3):109-114
稀土掺杂Gd2O3对YSZ/(Ni,Al)热障涂层组织与性能的影响
Effect of rare earth doped Gd2O3 on Microstructure and properties of YSZ/(Ni, Al) composite coatings
投稿时间:2015-10-06  修订日期:2016-03-20
DOI:10.16490/j.cnki.issn.1001-3660.2016.03.018
中文关键词:  热障涂层  电泳沉积  抗高温氧化  结合强度  氧化钆  稀土掺杂
英文关键词:Thermal barrier coating  Electrophoretic deposition  Oxidation resistance  Adhesion strength  Gd2O3  Rare earth doped
基金项目:
作者单位
宋闪光 上海工程技术大学 材料工程学院, 上海 201620 
王伟 上海工程技术大学 材料工程学院, 上海 201620 
谭世磊 上海工程技术大学 材料工程学院, 上海 201620 
王莉莉 上海工程技术大学 材料工程学院, 上海 201620 
AuthorInstitution
SONG Shan-guang College of Materials Engineering,Shanghai University of Engineering Science, Shanghai 201620, China 
WANG Wei College of Materials Engineering,Shanghai University of Engineering Science, Shanghai 201620, China 
TAN Shi-lei College of Materials Engineering,Shanghai University of Engineering Science, Shanghai 201620, China 
WANG Li-li College of Materials Engineering,Shanghai University of Engineering Science, Shanghai 201620, China 
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中文摘要:
      目的 提高YSZ/(Ni,Al)复合涂层与基体的结合强度和抗高温氧化性。方法 采用电泳沉积的方法,在Inconel600高温合金表面上沉积YSZ/(Ni,Al)复合涂层和掺杂稀土Gd2O3-YSZ/(Ni,Al)(简称G-YSZ/(Al,Ni))复合涂层,后进行真空烧结,然后对制备好的热障复合涂层进行划痕实验和等温循环氧化实验。通过对样品进行等温循环氧化实验,获取不同氧化时间段的复合涂层样品,并采用SEM和XRD对复合涂层组织和形貌进行分析。 结果 在1100 ℃等温氧化过程中,未掺杂稀土元素的氧化增重速率为0.0057 mg/mm2,而掺杂钆元素的氧化速率为0.0049 mg/mm2,氧化增重速率比未掺杂稀土YSZ/(Ni,Al)复合涂层低。G-YSZ/(Ni,Al)热障复合涂层在等温氧化过程中颗粒长大较小、裂纹少、表面更加致密。真空烧结后的YSZ/(Al,Ni)复合涂层和G-YSZ/(Al, Ni)复合涂层与基体的结合强度大约为4.0 N,在经过氧化100 h后,掺杂稀土的G-YSZ/(Al,Ni)复合涂层结合强度为3.5 N,未掺杂稀土的YSZ/(Al,Ni)复合涂层与基体的结合强度为2.6 N。G-YSZ/(Ni,Al)热障复合涂层中存在Gd2Zr2O7相和稳定的NiAl2O4相,Gd2Zr2O7相具有良好的稳定性以及耐高温氧化。结论 掺杂稀土氧化钆的G-YSZ/(Al,Ni)涂层的抗高温氧化性能显著提高。在等温氧化过程中,掺杂稀土元素的G-YSZ/(Al,Ni)复合涂层,其颗粒趋向于均匀化,裂纹明显变少,使得涂层更加致密,表面更加平整。等温氧化100 h后,掺杂了稀土氧化钆的G-YSZ/(Al,Ni)复合涂层基体之间具有更好的结合力,抗剥落性和服役寿命较好。
英文摘要:
      Objective To improve the oxidation resistanceand adhesion strength of YSZ/(Ni, Al) composite coatings. Methods YSZ/ (Ni, Al) composite coatings were deposited on Inconel 600 superalloy with rare earth doped Gd2O3(G-YSZ/(Al,Ni)) and without rare earth doped using the electrophoretic deposition (EPD) technique, followed by vacuum sintering method. Then the preparation of thermal barrier composite coatings were test by the scratches and the cycle of isothermal oxidation experiments. By Isothermal oxidation experiment, composite coatings samples of different oxidation period were obtained and by means of SEM and XRD analysis on the microstructure and morphology of the composite coatings. Results In the process of isothermal oxidation in air at 1100℃, YSZ/ (Ni, Al) composite coatings and rare earth doped coated samples have a rate of weight gain about 0.0057mg/mm2 and 0.0049mg/mm2, respectively. The rate of rare earth doped coated samples is smaller than the YSZ/ (Ni, Al) composite coatings without rare earth doped. G-YSZ/(Al,Ni) composite coatings have a little of growth of grain and the surface of the coating is more dense and crack-less. After vacuum sintering for 2h, the adhesion strength of G-YSZ/(Al,Ni) and YSZ/ (Ni, Al) were both about 4.0N, the adhesion strength of G-YSZ/(Al,Ni) and YSZ/ (Ni, Al) after isothermal oxidation in air at 1100℃ for 100 h, were 3.5N and 2.6N, respectively. G-YSZ/(Ni, Al) composite coatings exist Gd2Zr2O7 and stable NiAl2O4 phases by XRD analysis, and Gd2Zr2O7 phase has a good stability and resistance to high temperature oxidation. Conclusion G-YSZ/(Al,Ni) composite coatings significantly improve the oxidation resistance during isothermal oxidation in air at 1100℃. In the process of isothermal oxidation, the particles of doped with rare earth G-YSZ/(Al, Ni) composite coating tend to be homogenization and the crack obviously become small obviously, making the surface of coating more dense and smooth. After isothermal oxidation in air at 1100℃, G - YSZ/(Al, Ni) composite coating has a better adhesion strength between substrate, the spalling resistance and service life is better.
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