| 热障涂层热震失效寿命定量计算的研究 |
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| 引用本文： | 王引真,孙永兴,鄢君辉,郑修麟,阎国超. 热障涂层热震失效寿命定量计算的研究[J]. 无机材料学报, 1999, 14(1): 138-142 |
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| 作者姓名： | 王引真 孙永兴 鄢君辉 郑修麟 阎国超 |
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| 作者单位： | 石油大学机械系; 山东东营 257062; 西北工业大学学院西安, 西安 710072 |
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| 基金项目： | 中国石油天然气总公司中青年创新基金!W950512，山东省科委科研基金!!F9P0301 |
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| 摘 要： | 研究了热障涂层的热震失效，认为涂层热震失效的本质为应力疲劳失效．建立了涂层热震失效寿命理论计算公式，并用实验结果对公式进行了验证，证明公式能很好地拟合实验结果．提出了评价涂层抗热震性能的指标-临界热震温差范围△Tc．该工作为估算涂层寿命及减少实验工作量提供了理论依据．
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| 关 键 词： | 热障涂层 热应力 热震失效寿命 热喷涂 陶瓷涂层 |
| 收稿时间： | 1998-04-21 |
| 修稿时间： | 1998-05-22 |
Thermal Shock Failure Life Calculation of TBCs |
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| WANG Yin-Zhen,SUN Yong-Xing,YAN Jun-Hui,ZHENG Xiu-Lin,YAN Guo-Chao. Thermal Shock Failure Life Calculation of TBCs[J]. Journal of Inorganic Materials, 1999, 14(1): 138-142 |
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| Authors: | WANG Yin-Zhen SUN Yong-Xing YAN Jun-Hui ZHENG Xiu-Lin YAN Guo-Chao |
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| Affiliation: | Department of Mechanical Engineering; University of Petroleum Shandong Dongying 257062 China; Institute of Materials; Northwestern Polytechnical University Xi an 710072 China |
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| Abstract: | The thermal shod failure life of thermal barrier coatings (TBCs) was studied. A mathematicalmodel of thermal shock failure and theoretical calculation formula of the coatings' thermal shodfailure life were established. It is shown that the thermal shock failure mechanism of caatings isthermal stress fatigue destruction and that the formula accords well with the test results. Thecritical temperature range aTe in thermal schok can be used to evaluate the coating's resistanceto thermal cycling. This work provides a theoretical basis for evaluating the coating's lifetime andreducing test work. |
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| Keywords: | thermal barrier coatings thermal stress thermal shock failure life thermal spraying ceramic coating |
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