| La2Zr2O7/YSZ梯度热障涂层的热冲击失效行为 |
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| 引用本文： | 李淑鑫,吕哲,周艳文. La2Zr2O7/YSZ梯度热障涂层的热冲击失效行为[J]. 盐城工学院学报(自然科学版), 2019, 32(2): 1-6 |
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| 作者姓名： | 李淑鑫 吕哲 周艳文 |
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| 作者单位： | 辽宁科技大学 材料与冶金学院, 辽宁 鞍山 114051,辽宁科技大学 材料与冶金学院, 辽宁 鞍山 114051,辽宁科技大学 材料与冶金学院, 辽宁 鞍山 114051 |
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| 摘 要： | 隔热性能是热障涂层对基体热保护功能最直接的衡量标准。制备La2Zr2O7(LZO)/ YSZ 梯度热障涂层(DCL-TBCs),在1 300 ℃的顶部涂层表面温度下与500 μm厚的YSZ TBC进行热梯度循环试验,评估它们的寿命。分析试验结果表明,当厚度为100 μm和200 μm的YSZ涂层被LZO涂层替代时,DCL-TBCs的寿命会比500 μm厚的YSZ TBC高出一倍多。证明DCL-TBCs技术可在较高温度下有效延长涂层的使用寿命。
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| 关 键 词： | 热障涂层 等效保温 涂层失效 |
| 收稿时间： | 2018-11-14 |
Thermal Shock Failure Behavior of La2Zr2O7/YSZ Gradient Thermal Barrier Coatings |
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| LI Shuxin,LÜ Zhe and ZHOU Yanwen. Thermal Shock Failure Behavior of La2Zr2O7/YSZ Gradient Thermal Barrier Coatings[J]. Journal of Yancheng Institute of Technology(Natural Science Edition), 2019, 32(2): 1-6 |
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| Authors: | LI Shuxin,LÜ Zhe ZHOU Yanwen |
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| Affiliation: | School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan Liaoning114051, China,School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan Liaoning114051, China and School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan Liaoning114051, China |
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| Abstract: | Thermal insulation performance is the most direct measure of thermal protection function of thermal barrier coating to substrate. La2Zr2O7(LZO)/YSZ gradient thermal barrier coatings(DCL-TBCs)were prepared, and thermal gradient cycling tests were carried out with YSZ TBC 500 micron thick at 1 300 C top coating surface temperature to evaluate their life. Analytical test results show that when YSZ coatings with thicknesses of 100 and 200 microns are replaced by LZO coatings, the lifetime of DCL-TBCs is more than double that of 500 micron thick YSZ TBC. It is proved that DCL-TBCs technology can effectively prolong the service life of coatings at higher temperatures. |
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| Keywords: | thermal barrier coating equivalent insulation coating failure |
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