| 激光织构对Fe基非晶合金涂层润湿性的影响研究 |
| 投稿时间：2020-10-22 修订日期：2021-01-27 点此下载全文 |
| 引用本文：许骏杰,苏娟,康嘉杰,等.激光织构对Fe基非晶合金涂层润湿性的影响研究[J].钻探工程,2021,48(4):21-28.XU Junjie,SU Juan,KANG Jiajie,et al. Effect of laser texture on wettability of Fe-based amorphous alloy coating[J]. Drilling Engineering, 2021,48(4):21-28. |
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| 基金项目:国家重点研发计划项目“5000米智能地质钻探技术装备研发及应用示范”课题三“高性能薄壁绳索取心钻杆研制”(编号:2018YFC0603403);国家自然科学基金面上项目“深海钻具腐蚀冲蚀磨损失效规律及其防护机理研究”(编号:41772389)、“冰层取心钻具表面防覆冰超疏水涂层及其耐久性”（编号:41872183）；装备预研教育部联合基金青年人才基金项目“发动机缸体强化延寿涂层设计制造技术”(编号:6141A02033120) |
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| 中文摘要:为提高页岩油气钻进过程中钻头表面的耐磨性能及防泥包性能，采用冷喷涂（CS）和超音速火焰喷涂（HVAF）技术在35CrMo钢基体上制备了Fe48Cr15Mo14C15B6Y2非晶合金涂层，并利用紫外激光制备了涂层的疏水表面，利用扫描电子显微镜（SEM）、X射线能谱仪（EDS）、X射线衍射仪（XRD）测试分析了涂层的微观结构和力学性能，利用接触角测量仪表征涂层的润湿性，并分析其润湿机理。结果表明：利用CS技术制备的Fe基非晶合金涂层结构更加致密，非晶质量分数达到90%，且具有更好的热稳定性。激光过程中的熔融物快速冷却在涂层表面形成纳米尺寸级别的凝结物以及团聚物形成微纳复合结构，在激光扫描次数为7次时，CS涂层表面水接触角最高，具有良好的疏水性。 |
| 中文关键词:页岩油气 钻头 耐磨性能 钻头泥包 Fe基非晶合金涂层 激光织构 润湿性 冷喷涂 超音速火焰喷涂 |
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| Effect of laser texture on wettability of Fe-based amorphous alloy coating |
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| Abstract:In order to improve wear resistance and anti-balling of the drill bit during shale oil and gas drilling， Fe48Cr15Mo14C15B6Y2 amorphous alloy coatings were prepared on 35CrMo steel substrates by cold spraying （CS） and high velocity air fuel （HVAF） spraying with the hydrophobic surface of coatings made by UV laser. The microstructure and mechanical properties of the coatings were analyzed by scanning electron microscopy （SEM）， X-ray energy spectrometer （EDS） and X-ray diffractometer （XRD）， a contact angle meter was used to characterize the wettability of the coating， and the wetting mechanism was analyzed. The results showed that the Fe-based amorphous alloy coating prepared by CS technology had a denser microstructure and better thermal stability with the amorphous mass fraction up to 90%. The melt in the laser process rapidly cooled on the surface of the coating to form nano-sized condensation and agglomerates to form a micro-nano composite structure. With 7 laser scans， the CS coating had the highest water contact angle on the surface， which represented good hydrophobicity. |
| keywords:shale oil and gas drill bit wear resistance balling of the drill bit Fe-based amorphous alloy coating laser texture wettability cold spraying high velocity air fuel spraying |
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