| Al_2O_3对高速火焰喷涂镍基涂层抗热疲劳性能的影响 |
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| 引用本文： | 邓畅光,伍超群,邓春明,周克崧.Al_2O_3对高速火焰喷涂镍基涂层抗热疲劳性能的影响[J].材料保护,2009,42(10). |
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| 作者姓名： | 邓畅光 伍超群 邓春明 周克崧 |
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| 作者单位： | 广州有色金属研究院,广东,广州,510650 |
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| 基金项目： | 国家863计划资助项目 |
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| 摘 要： | 为了提高连铸结晶器的使用寿命和生产效率,利用高速火焰喷涂(HVAF)技术在铜基体上制备了镍基涂层,探讨了喷涂粉末中不同比例的Al2O3对镍基涂层抗热疲劳性能的影响及其机理.结果表明:添加50%Al2O3的镍基涂层,抗热疲劳性能得到了明显的提高;Al2O3颗粒的添加,有效地增加了涂层的压应力,提高了涂层与铜基体之间的结合强度,从而显著地提高了涂层的抗热疲劳性能.
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| 关 键 词： | 高速火焰喷涂 镍基涂层 抗热疲劳性能 |
The Influence of Al_2O_3 on the Thermal Fatigue Resistance of Ni-Based Coating Prepared by High Velocity Air Fuel Spraying |
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| DENG Chang-guang,WU Chao-qun,DENG Chun-ming,ZHOUKe-song ..The Influence of Al_2O_3 on the Thermal Fatigue Resistance of Ni-Based Coating Prepared by High Velocity Air Fuel Spraying[J].Journal of Materials Protection,2009,42(10). |
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| Authors: | DENG Chang-guang WU Chao-qun DENG Chun-ming ZHOUKe-song |
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| Affiliation: | DENG Chang-guang,WU Chao-qun,DENG Chun-ming,ZHOUKe-song (Guangzhou Research Institute of Non-ferrous Metals,Guangzhou 510650,China). |
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| Abstract: | Ni-based coating was prepared on copper substrate by high velocity air fuel ( HVAF) spraying so as to increase the service life and efficiency of casting mold.The influence of Al2O3 on the thermal fatigue resistance of the coatings was studied.Results show that when 50% Al2O3 is added in the raw material powders,the corresponding HVAF Ni-based coating has significantly improved thermal fatigue resistance.The introduction of Al2O3 led to increased compressive stress and adhesion to substrate of the coating, ... |
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| Keywords: | Al2O3 |
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