于大千,王乘风,纪任山,石亮,刘增斌,李富强,李海庆,王启民.HVOF/AIP技术制备耐磨蚀涂层及性能研究[J].表面技术,2025,54(1):42-52.
YU Daqian,WANG Chengfeng,JI Renshan,SHI Liang,LIU Zengbin,LI Fuqiang,LI Haiqing,WANG Qimin.Preparation and Properties of Wear and Corrosion Resistant Coatings by a Hybrid HVOF/AIP Technique[J].Surface Technology,2025,54(1):42-52 |
| HVOF/AIP技术制备耐磨蚀涂层及性能研究 |
| Preparation and Properties of Wear and Corrosion Resistant Coatings by a Hybrid HVOF/AIP Technique |
| 投稿时间：2024-12-24 修订日期：2025-01-07 |
| DOI：10.16490/j.cnki.issn.1001-3660.2025.01.004 |
| 中文关键词: 超音速火焰喷涂 电弧离子镀 耐腐蚀性 耐磨性 |
| 英文关键词:high-velocity oxy-fuel spraying arc ion plating corrosion resistance wear resistance |
| 基金项目:国家自然科学基金(52375173);天地科技股份有限公司科技创新创业资金专项项目(2024-TD-MS015);广东省基础与应用基础研究基金项目(2023B151520033) |
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| Author | Institution |
| YU Daqian | Beijing Tiandi Rongchuang Technology Co.Ltd., Beijing 100013, China;National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013, China |
| WANG Chengfeng | School of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou 510006, China |
| JI Renshan | Beijing Tiandi Rongchuang Technology Co.Ltd., Beijing 100013, China;National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013, China |
| SHI Liang | Beijing Tiandi Rongchuang Technology Co.Ltd., Beijing 100013, China;National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013, China |
| LIU Zengbin | Beijing Tiandi Rongchuang Technology Co.Ltd., Beijing 100013, China;National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013, China |
| LI Fuqiang | School of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou 510006, China |
| LI Haiqing | School of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou 510006, China |
| WANG Qimin | School of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou 510006, China |
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| 中文摘要: |
| 目的 采用超音速火焰喷涂(HVOF)技术和电弧离子镀(AIP)技术制备耐磨蚀防护涂层，延长45#钢结构件在煤粉供料系统的服役周期。方法 通过HVOF、AIP和HVOF/AIP复合技术分别在45#钢表面制备了WC-10Co4Cr涂层、CrN涂层和WC-10Co4Cr/CrN复合涂层，通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)、激光共聚焦显微镜等仪器，分析了不同涂层的微观形貌、物相组成、耐蚀性和耐磨性。结果 WC-10Co4Cr、CrN和WC-10Co4Cr/CrN 3种涂层与基体之间界面结合状态良好。HVOF技术制备的WC-10Co4Cr涂层的耐腐蚀性稍弱，AIP技术沉积的CrN涂层有良好的耐腐蚀性能，复合技术沉积的WC-10Co4Cr/CrN涂层中，CrN涂层较好地覆盖了WC-10Co4Cr涂层的孔隙，大幅提升了WC-10Co4Cr涂层的耐腐蚀性。划痕测试结果表明，WC-10Co4Cr/CrN复合涂层的结合力优于单一的CrN涂层，硬度和摩擦磨损测试表明WC-10Co4Cr/CrN复合涂层的硬度、韧性和耐磨性均远优于单一的CrN涂层。结论 HVOF制备的WC-10Co4Cr涂层具有良好的承载能力，在此涂层表面通过AIP法制备的WC-10Co4Cr/CrN复合涂层，可以提升45#钢基体的耐磨、耐腐蚀性能，从而有效延长工件的使用寿命。 |
| 英文摘要: |
| The issues of wear and corrosion deterioration have been persisting as problems in the feeding system of industrial pulverized-coal boilers during operation. In this study, WC-10Co4Cr, CrN, and hybrid WC-10Co4Cr/CrN coatings were prepared on 45# steel surfaces by high-velocity oxy-fuel (HVOF) spraying, arc ion plating (AIP), and a hybrid HVOF/AIP technique, respectively, to extend the service life of the 45# steel components within the pulverized-coal system. The phase structure and microstructure, surface and cross-sectional morphologies, and wear track morphologies were observed with X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectrometer (EDS). The corrosion resistance of the coatings was characterized through electrochemical tests. The mechanical properties of the coatings were analyzed through nano-indentation test, Vickers indentation test, and high-load scratch test. The tribological properties of the coatings were analyzed by a pin-on-disk wear tester, both in atmospheric and pulverized-coal environments. The results indicated that the main phase in the HVOF WC-10Co4Cr coating was the WC phase. Some minor W2C, Co, and Co6W6C phases were also detected. In the AIP CrN and hybrid WC-10Co4Cr/CrN coatings, XRD peaks of FCC CrN phases prevailed. However, the preferred orientations on these two specimens were very different. The CrN coating deposited on 45# steel exhibited a strong (111) preferred orientation, whereas no obvious preferred orientation was observed in the CrN coating deposited on the WC-10Co4Cr coating. The WC-10Co4Cr coating had a thickness of approximately 230 μm with some internal pores, while the CrN coating was about 35 μm thick and relatively denser. The interface bonding between the WC-10Co4Cr, CrN, and WC-10Co4Cr/CrN coatings and the substrate was very adherent. Both EIS and potentiodynamic polarization curve tests indicated that corrosion resistance of the CrN and WC-10Co4Cr/CrN coatings were superior by an order of magnitude to that of the WC-10Co4Cr coating, suggesting that the CrN coating effectively covered the pores in the WC-10Co4Cr coating, significantly enhancing its corrosion resistance. Scratch test results showed that the adhesion of the WC-10Co4Cr/CrN composite coating was better than that of the single CrN coating. Nano-indentation test and Vickers hardness tests revealed that under lower loads, the hardness of both coatings was similar. However, as the load for Vickers hardness test increased from 10 N to 30 N, the hardness of the CrN coating decreased from 1 926.45HV to 703.88HV, while the hardness of the WC-10Co4Cr/CrN composite coating only decreased from 1 914.30HV to 1 591.48HV. The hardness of hybrid coatings under higher loads was significantly higher than that of single coatings. Strengthening of the thick WC-10Co4Cr interlayer coatings was important for the high-load application of the CrN coatings. The pin-on-disk friction-wear tests indicated that the wear rates of the CrN coating were 9.705×10‒7 mm3/(N.m) in the air atmosphere and 1.309×10‒6 mm3/(N.m) in the pulverized-coal environment, while the wear rates of the WC-10Co4Cr/CrN composite coating were 3.631×10‒7 mm3/(N.m) and 5.657×10‒7 mm3/(N.m) respectively in the above two environments, indicating that the wear resistance of the composite coating was much better than that of the single CrN coating. In summary, the WC-10Co4Cr coating prepared by HVOF exhibits good load-bearing capacity. The WC-10Co4Cr/CrN composite coating prepared by the hybrid technique can effectively enhance the wear and corrosion resistance of 45# steel simultaneously, thereby extending the service life of the 45# steel components. |
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