李春,倪立勇,杨震晓,马康智,文波,曲栋.稀土氧化物稳定氧化铪热障涂层的制备及热冲击性能研究[J].热喷涂技术,2021,13(2):28~36.
稀土氧化物稳定氧化铪热障涂层的制备及热冲击性能研究
Preparation and Thermal Shock Resistanceof Rare-earth Oxides Stabilized Hafnia Thermal Barrier Coatings
  
DOI:10.3969/j.issn.1674-7127.2021.02.004
中文关键词:  大气等离子喷涂  稀土氧化物稳定氧化铪  热冲击  失效机理
英文关键词:Atmospheric plasma spray  Rare-earth oxides stabilized hafnia  Thermal shock  Failure mechanism
基金项目:
                 
作者单位
李春 航天材料及工艺研究所
倪立勇 航天材料及工艺研究所
杨震晓 航天材料及工艺研究所
马康智 航天材料及工艺研究所
文波 航天材料及工艺研究所
曲栋 航天材料及工艺研究所
摘要点击次数: 47
全文下载次数: 61
中文摘要:
      采用大气等离子喷涂 (APS) 技术制备了稀土元素掺杂量为 19 mol.% 的 HfO2 涂层, 即 Hf0.81Y0.19O1.905 (YSH19)/ YSZ 与 Hf0.81Yb0.0475Y0.1425O1.905(YbYSH19)/YSZ 双陶瓷层热障涂层, 研究了其在 1300℃下耐高温燃气热冲击性能。 结果表明, 两种热障涂层的隔热能力约为 200℃, YbYSH19/YSZ 体系热障涂层经 280 次燃气热冲击循环后涂层 结构依然较为完整, 性能显著优于 YSH19/YSZ 及 YSZ 热障涂层体系。 涂层的失效模式为因中心区域处较大冲击 载荷造成的涂层逐层剥落, 以及边缘位置处轴向应力和剪切应力导致的涂层剥落。
英文摘要:
      HfO2-based thermal barrier coatings doped with 19 mol.% rare-earth elements, including Hf0.81Y0.19O1.905 (YSH19)/YSZ and Hf0.81Yb0.0475Y0.1425O1.905 (YbYSH19)/YSZ, were prepared by atmospheric plasma spraying (APS). The thermal shock performance of the coatings under 1300℃ burner rig was studied. The results showed that the thermal insulation capacities of the YSH19/YSZ and YbYSH19/YSZ coatings with 200 μm thickness were about 200℃ . The YbYSH19/YSZ coating was relatively complete after 280 cycles of thermal shock, revealing much better thermal shock resistance compared with YSH19/YSZ and YSZ coatings. The failure mode of the coatings is the peeling of the coating layer by layer caused by the large impact load at the center area, and the peeling of the coating caused by the axial stress and shear stress at the edge position
查看全文  查看/发表评论  下载PDF阅读器
关闭