| 三种热障涂层的组织性能 |
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| 引用本文： | 潘可耕,黄成全,范洪峰.三种热障涂层的组织性能[J].焊接学报,2007,28(7):49-52. |
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| 作者姓名： | 潘可耕 黄成全 范洪峰 |
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| 作者单位： | 黑龙江工程学院,产学合作办公室,哈尔滨,150050;沈阳黎明航空发动机(集团)有限责任公司,沈阳,110043;大唐七台河发电有限责任公司,黑龙江,七台河,154600 |
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| 基金项目： | 黑龙江省哈尔滨市学科后备带头人项目 |
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| 摘 要： | 采用等离子喷涂技术制备了三种不同材料的热障涂层(TBC),对涂层进行了组织性能的分析比较.结果表明,Al-1075的TBC结合强度最高,为 24.66 MPa,具有良好的抗热震性能;KF-230的TBC结合强度最低,为 16.06 MPa;LG-210的TBC结合强度居中,抗热震性能最差.分析认为,氧化物层(TGO)在热障涂层中的失效起至关重要的作用,TGO是裂纹的产生源,是裂纹扩展的通道,是热障涂层系统中的最薄弱环节.因此抑制TGO是提高涂层结合强度、改善涂层抗热震性能的重要措施.
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| 关 键 词： | 热障涂层 涂层组织性能 等离子喷涂 |
| 文章编号： | 0253-360X（2007）07-049-04 |
| 收稿时间： | 2007/4/29 0:00:00 |
| 修稿时间： | 2007-04-29 |
Microstructures and properties of three kinds of thermal barrier coatings |
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| PAN Kegeng,HUANG Chengquan and FAN Hongfeng.Microstructures and properties of three kinds of thermal barrier coatings[J].Transactions of The China Welding Institution,2007,28(7):49-52. |
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| Authors: | PAN Kegeng HUANG Chengquan and FAN Hongfeng |
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| Affiliation: | Production and Study Office, Helongjiang Engineering Institute, Harbin 150050, China,Shenyang Liming Aero-Engine Group Corporation, Shenyang 110043, China and Datang Qitaihe Power Generationg Co., Ltd, Qitaihe 154600, Heilongjiang, China |
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| Abstract: | Three kinks of thermal barrier coatings (TBC) were prepared with plasma spraying, and microstrutures and properties of the coatings were analyzed and compared. The results shows that the bonding strength of Al-1075 TBC is 24.66 MPa which is the highest strength and has great thermal shocking resistance. The bonding strength of KF-230 TBC is the lowest, 16.06 MPa. The bonding strength of LG-210 TBC is higher, but has the worst thermal shocking resistance. The analysis shows that the thermal grown oxide (TGO) plays an important role in failure of the TBCs. TGO is the origion of cracking, and is the passage of crack expansion. It is the weakest in the system. So restriction of TGO is a key method to increase the bonding strength and improve the thermal shocking resistance of the coating. |
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| Keywords: | thermal barrier coating microstructure and property of the coating plasma spraying |
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