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热喷涂技术:2024,16(1):71-79
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喷涂距离及氧燃充枪比对爆炸喷涂Cr3C2-25NiCr涂层性能的影响
任佳奇1, 胡平生2, 李春光2, 乔志刚3, 崔永静1, 王天颖1, 王长亮1, 胡宇田1, 刘宇1
(1.中国航发北京航空材料研究院 航空材料先进腐蚀与防护航空科技重点实验室;2.中广核核电运营有限公司;3.阳江核电有限公司)
Influence of Spraying Distance and Oxygen /Fuel In-Gun Ratio on the Properties of Cr3C2-25NiCr Coatings Prepared by Detonation Spraying
RENJIAQI1, HUPINGSHENG2, LICHUNGUANG2, QIAOZHIGANG3, CUIYONGJING1, WANGTIANYING1, WANGCHANGLIANG1, HUYUTIAN1, LIUYU1
(1.Key Laboratory of Advanced Corrosion and Protection for Aviation Materials, AECC Beijing Institute of Aeronautical Materials;2.China Nuclear Power Operations Co., Ltd.;3.Yangjiang Nuclear Power Co., Ltd.)
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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.
文章编号:     中图分类号:TG174.4    文献标志码:
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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.

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