邝子奇,陈文龙,刘敏,毛杰,邓子谦.粘结层预处理对PS-PVD沉积7YSZ热障涂层氧化行为的影响[J].表面技术,2017,46(3):84-90.
KUANG Zi-qi,CHEN Wen-long,LIU Min,MAO Jie,DENG Zi-qian.Effect of Bond Coats Pretreatment on Oxidation Behavior of 7YSZ Thermal Barrier Coating Deposited by Plasma Spray-Physical Vapor Deposition[J].Surface Technology,2017,46(3):84-90 |
| 粘结层预处理对PS-PVD沉积7YSZ热障涂层氧化行为的影响 |
| Effect of Bond Coats Pretreatment on Oxidation Behavior of 7YSZ Thermal Barrier Coating Deposited by Plasma Spray-Physical Vapor Deposition |
| 投稿时间：2016-12-29 修订日期：2017-03-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.03.012 |
| 中文关键词: 等离子喷涂-物理气相沉积 7YSZ 粘结层预处理 高温氧化 柱状结构 TGO层 结构演变 |
| 英文关键词:plasma spray-physical vapor deposition 7YSZ bond coats-pretreatment high-temperature oxidation columnar structure TGO layer structure evolution |
| 基金项目:广东省自然科学基金（2016A030312015）；广东省科技厅对外科技合作项目（2013B050800031）；广东省科技厅工业高新技术攻关引导项目（2013B010102023）；广东省科技厅国际科技合作（2014B050502008） |
| 作者 | 单位 |
| 邝子奇 | 广东省新材料研究所 现代材料表面工程技术国家工程实验室 广东省现代表面工程技术重点实验室，广州 510650 |
| 陈文龙 | 1.广东省新材料研究所 现代材料表面工程技术国家工程实验室 广东省现代表面工程技术重点实验室，广州 510650；2.广东工业大学 材料与能源学院，广州 510006 |
| 刘敏 | 广东工业大学 材料与能源学院，广州 510006 |
| 毛杰 | 广东工业大学 材料与能源学院，广州 510006 |
| 邓子谦 | 1.广东省新材料研究所 现代材料表面工程技术国家工程实验室 广东省现代表面工程技术重点实验室，广州 510650；2.广东工业大学 材料与能源学院，广州 510006 |
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| Author | Institution |
| KUANG Zi-qi | National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Guangdong for Modern Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510650, China |
| CHEN Wen-long | 1.National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Guangdong for Modern Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510650, China; 2. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
| LIU Min | School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
| MAO Jie | School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
| DENG Zi-qian | 1.National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Guangdong for Modern Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510650, China; 2. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
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| 中文摘要: |
| 目的 提高PS-PVD沉积7YSZ热障涂层的抗高温氧化性能。方法 采用等离子喷涂-物理气相沉积（PS-PVD）分别在未预处理和预处理（抛光+预氧化）的粘结层表面制备了柱状结构7YSZ热障涂层，并在大气环境下测试了柱状结构7YSZ热障涂层的950 ℃静态高温氧化性能。利用扫描电子显微镜、X射线衍射仪、能谱仪对高温氧化过程中的陶瓷层/粘结层界面形貌、TGO层结构演变进行表征。结果 粘结层的抛光处理能够降低表面几何受力不均匀部位，抑制陶瓷层/TGO/粘结层界面处微裂纹的产生，同时粘结层的预氧化处理形成的薄而连续的TGO层能有效降低TGO的生长速度，抑制陶瓷层-粘结层之间的元素互扩散。柱状结构7YSZ涂层的高温氧化动力学曲线符合Wagner抛物线规律，粘结层未预处理和预处理的7YSZ热障涂层的氧化速率常数分别为0.101×1012 cm2/s和0.115×1013 cm2/s。结论 粘结层预处理能有效改善等离子物理气相沉积7YSZ热障涂层的抗氧化性能。 |
| 英文摘要: |
| The work aims to improve resistance to high temperature oxidation of 7YSZ thermal barrier coating deposited by plasma spray-physical vapor deposition. The columnar structure 7YSZ thermal barrier coatings (TBCs) were prepared by plasma spray-physical vapor deposition (PS-PVD) on pretreated (polishing+pre-oxidation) and un-pretreated bond coat surfaces, respectively. The static resistance to high temperature oxidation of 7YSZ thermal barrier coatings was tested in atmospheric environment at 950 ℃. Interfacial morphology of the ceramic layer/bond coat as well as structure evolution of TGO layer during high-temperature oxidation process were characterized by virtue of scanning electron microscope (SEM), X-ray diffractometer and (XRD) and energy dispersive spectrometer (EDS). Polishing of bond coats could reduce parts subject to non-uniform geometric stress and inhibit the formation of micro-crack at the interface of ceramic layer/TGO/bond coats. Meanwhile, the thin and continuous TGO layer formed as a result of pre-oxidation treatment of bond coats could effectively reduce the growth rate of TGO and inhibit the element interdiffusion between ceramic layer and bond coats. The isothermal oxidation kinetic curve of columnar 7YSZ thermal barrier coatings conformed to Wagner parabolic law. The oxidation rate constant of 7YSZ coatings with bond coats pretreated and un-pretreated was 0.101×1012 cm2/s and 0.115×1013 cm2/s, respectively. The pretreated of bond coats can effectively improve the oxidation resistance of 7YSZ thermal barrier coating deposited by plasma spray-physical vapor deposition. |
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