| 等离子喷涂热障涂层材料弹性模量与硬度的压痕测试分析 |
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| 引用本文： | 毛卫国,陈强,张斌,万杰. 等离子喷涂热障涂层材料弹性模量与硬度的压痕测试分析[J]. 材料工程, 2011, 0(10): 66-71,77 |
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| 作者姓名： | 毛卫国 陈强 张斌 万杰 |
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| 作者单位： | 湘潭大学材料与光电物理学院低维材料及其应用技术教育部重点实验室,湖南湘潭,411105 |
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| 摘 要： | 采用纳米压痕法,研究了经高温热循环处理后的等离子喷涂热障涂层材料弹性模量和硬度的抛物线式演变规律,并采用 Weibull统计分析方法对纳米压痕测试数据进行了处理和分析,提高了实验数据的可靠性.结果表明,经过高温热循环处理之后,不同位置处的热障涂层弹性模量和硬度都呈现出明显的各向异性分布.随着热循环次数的增加,涂层表面和...
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| 关 键 词： | 热障涂层 纳米压痕 弹性模量 硬度 Weibull分析 |
Investigations of Elastic Modulus and Hardness of Air Plasma Sprayed Thermal Barrier Coatings by Nanoindentation Method |
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| MAO Wei-guo,CHEN Qiang,ZHANG Bin,WAN Jie. Investigations of Elastic Modulus and Hardness of Air Plasma Sprayed Thermal Barrier Coatings by Nanoindentation Method[J]. Journal of Materials Engineering, 2011, 0(10): 66-71,77 |
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| Authors: | MAO Wei-guo CHEN Qiang ZHANG Bin WAN Jie |
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| Affiliation: | (Key Laboratory of Low Dimensional Materials and Application Technology (Ministry of Education),Faculty of Materials,Optoelectronics and Physics,Xiangtan University,Xiangtan 411105,Hunan,China) |
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| Abstract: | The parabolic evolutions of elastic modulus and hardness of air plasma sprayed thermal barrier coatings under thermal cycles were studied by nanoindentation method.The experimental data were analyzed by Weibull statistical method to minimize the measurement scatter.The results indicated that elastic modulus and hardness in the interface region of the coating display anisotropic distribution.They increase with thermal cycling and then gradually keep a constant after some thermal cycles.The values of elastic modulus and hardness in the cross-sectional coating are larger than that in the coating surface region.The reason was discussed with the aid of the scanning electronic microscope observations. |
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| Keywords: | thermal barrier coating nanoindentation elastic modulus hardness Weibull statistics |
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