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投稿时间：2024-03-11 修订日期：2024-04-02
投稿时间：2024-03-11 修订日期：2024-04-02
中文摘要: 采用爆炸喷涂技术制备了Cr3C2-25NiCr涂层，采用SEM测试、显微硬度测试、沉积效率测试、弯曲性能表征等手段研究了喷涂距离及氧燃充枪比对Cr3C2-25NiCr涂层性能的影响，结果表明，当喷涂距离为250mm以及氧燃充枪比为45%时，Cr3C2相熔融较为充分，制备的涂层性能最优，孔隙率仅为0.52%，显微硬度达878.6HV0.3。涂层沉积效率随喷涂距离增大而降低，随氧燃充枪比增大而上升。喷涂距离及氧燃充枪比对涂层弯曲性能无显著影响。
Abstract:The Cr3C2-25NiCr coatings were prepared by detonation gun spraying technology. The effects of spraying distance and oxygen /fuel in-gun ratio on the properties of Cr3C2-25NiCr coatings were studied by SEM test, micro-hardness test, deposition efficiency test and bending property characterization. The results show that when the spraying distance is 250mm and the oxygen /fuel in-gun ratio is 45%, the melting of Cr3C2 phase is sufficient, and the performances of the coating is the best, The porosity of the coating is only 0.52%, and the micro-hardness is 878.6HV0.3. The deposition efficiency of the coating decreases with the increase of spraying distance, and improves with the increase of the oxygen /fuel in-gun ratio. The spraying distance and the oxygen /fuel in-gun ratio have no significant effect on the bending properties of the coatings.
keywords: detonation spraying spraying distance oxygen /fuel in-gun ratio Cr3C2-25NiCr coating porosity microhardness deposition efficiency bending property
文章编号： 中图分类号：TG174.4 文献标志码：
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引用文本：
任佳奇,胡平生,李春光,乔志刚,崔永静,王天颖,王长亮,胡宇田,刘宇.喷涂距离及氧燃充枪比对爆炸喷涂Cr3C2-25NiCr涂层性能的影响[J].热喷涂技术,2024,16(1):71-79.
RENJIAQI,HUPINGSHENG,LICHUNGUANG,QIAOZHIGANG,CUIYONGJING,WANGTIANYING,WANGCHANGLIANG,HUYUTIAN,LIUYU.Influence of Spraying Distance and Oxygen /Fuel In-Gun Ratio on the Properties of Cr3C2-25NiCr Coatings Prepared by Detonation Spraying[J].Thermal Spray Technology,202416(1):71-79.
任佳奇,胡平生,李春光,乔志刚,崔永静,王天颖,王长亮,胡宇田,刘宇.喷涂距离及氧燃充枪比对爆炸喷涂Cr3C2-25NiCr涂层性能的影响[J].热喷涂技术,2024,16(1):71-79.
RENJIAQI,HUPINGSHENG,LICHUNGUANG,QIAOZHIGANG,CUIYONGJING,WANGTIANYING,WANGCHANGLIANG,HUYUTIAN,LIUYU.Influence of Spraying Distance and Oxygen /Fuel In-Gun Ratio on the Properties of Cr3C2-25NiCr Coatings Prepared by Detonation Spraying[J].Thermal Spray Technology,202416(1):71-79.