纪朝辉,张帅,马祥,丁坤英,程涛涛.基于多重分形的可磨耗涂层相结构表征及高速刮磨行为分析[J].表面技术,2020,49(2):165-171.
JI Zhao-hui,ZHANG Shuai,MA Xiang,DING Kun-ying,CHENG Tao-tao.Phase Structure Characterization and High-speed Scraping Behavior Analysis of Abrasable Coatings Based on Multifractal[J].Surface Technology,2020,49(2):165-171 |
| 基于多重分形的可磨耗涂层相结构表征及高速刮磨行为分析 |
| Phase Structure Characterization and High-speed Scraping Behavior Analysis of Abrasable Coatings Based on Multifractal |
| 投稿时间：2019-08-03 修订日期：2020-02-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.02.020 |
| 中文关键词: 铝硅聚苯酯 封严涂层 多重分形谱 摩擦系数 高速刮磨 刮削力 |
| 英文关键词:aluminum silicon polyphenyl ester sealing coating multifractal spectrum friction coefficient high speed scraping scraping force |
| 基金项目:国家自然科学基金资助项目（51501222）；中国民航大学实验技术创新基金（2019CXJJ08） |
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| Author | Institution |
| JI Zhao-hui | 1.Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance, Civil Aviation University of China, Tianjin 300300, China |
| ZHANG Shuai | 1.Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance, Civil Aviation University of China, Tianjin 300300, China |
| MA Xiang | 2.Ameco, Beijing 100621, China |
| DING Kun-ying | 1.Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance, Civil Aviation University of China, Tianjin 300300, China |
| CHENG Tao-tao | 1.Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance, Civil Aviation University of China, Tianjin 300300, China |
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| 中文摘要: |
| 目的 研究不同结构铝硅聚苯酯（AlSi-PHB）低温封严涂层中聚苯酯相的分布在高速刮磨条件下与涂层刮削力的关系。方法 利用大气等离子喷涂方法制备三种不同结构的AlSi-PHB封严涂层，采用扫描电镜和激光共聚焦设备获得涂层截面形貌的金相照片，通过Matlab软件得出表征聚苯酯相分布的多重分形谱。采用UMT-2微摩擦磨损实验机得到摩擦系数。通过高速转子试验台测得涂层在给定高速刮磨条件下的刮削力，并分析涂层的摩擦磨损机制。结果 多重分形谱可以定量表征聚苯酯相的分布及大小颗粒数目比例。三种摩擦副得到的摩擦系数分别为0.64、0.56、0.55，高速刮磨过程中的刮削力分别为104、154、90 N。三种涂层都发生了微观切削和粘着磨损的摩擦磨损机制。结论 在聚苯酯相含量相差不多的情况下，平均摩擦系数与聚苯酯相含量、分布均匀程度及颗粒大小数目比例有关：聚苯酯含量越多，平均摩擦系数越小；在聚苯酯相含量相差不多的情况下，聚苯酯相分布越均匀，颗粒越细小，摩擦系数越小。同时，聚苯酯相的分布均匀程度会影响高速刮磨过程中的刮削力，聚苯酯相分布越均匀，涂层结合强度越高，刮削力越大，涂层越不容易发生脱落。 |
| 英文摘要: |
| The work aims to study the relationship between the polystyrene phase distribution of low-temperature seal coatings in AlSi-PHB (aluminum-silicon polyphenylene ester) with different structures and the coating scraping force under high-speed scraping conditions. Three AlSi-PHB seal coatings with different structures were prepared by atmospheric plasma spraying method. The metallographic photographs of the cross-section of the coating were measured by scanning electron microscopy and laser confocal equipment. The multi-fractal spectrum of polystyrene phase distribution after characterization was obtained by Matlab software. The friction coefficient was measured by a UMT-2 micro-friction wear tester. The scraping force of the coating under a given high speed scraping condition was measured by a high speed rotor test bench and the friction and wear mechanism of the coating was analyzed. The multifractal spectrum could quantitatively characterize the distribution of polyphenyl ester phase and the proportion of particles in size. The friction coefficients of the three friction pairs were 0.64, 0.56 and 0.55, respectively. The scraping forces during high speed scraping were 104, 154 and 90 N, respectively. The friction and wear mechanisms of micro-cutting and adhesive wear occurred in all three coatings. In the case of similar content of polyphenylene ester phase, the average friction coefficient is related to polyphenyl ester phase content, distribution uniformity and proportion of particle size: the more polyphenyl ester content, the smaller the average friction coefficient. When the content is similar, the distribution of the polyphenyl ester phase is more uniform, the particles become finer, and the friction coefficient is smaller. At the same time, the uniformity of the distribution of polyphenyl ester phase will affect the scraping force during high-speed scraping. The more uniform distribution of polyphenyl ester phase can lead to higher bonding strength of the coating and greater scraping force, so the coating will be less likely to fall off. |
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