张龙龙,黄继波,刁鹏源,李德元,黄仁忠,张楠楠,谢迎春.冷喷涂制备CuZn35涂层结构及耐摩擦磨损性能[J].表面技术,2023,52(3):172-180, 216.
ZHANG Long-long,HUANG Ji-bo,DIAO Peng-yuan,LI De-yuan,HUANG Ren-zhong,ZHANG Nan-nan,XIE Ying-chun.Structure and Wear Resistance of CuZn35 Coating Prepared by Cold Spraying[J].Surface Technology,2023,52(3):172-180, 216 |
| 冷喷涂制备CuZn35涂层结构及耐摩擦磨损性能 |
| Structure and Wear Resistance of CuZn35 Coating Prepared by Cold Spraying |
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| DOI：10.16490/j.cnki.issn.1001-3660.2023.03.014 |
| 中文关键词: 高压冷喷涂 气体温度 CuZn35涂层 微观组织 耐磨性能 |
| 英文关键词:high pressure cold spraying gas temperature CuZn35 coating microstructure wear resistance |
| 基金项目:国家自然科学基金(52001078);广东省特支计划(2019BT02C629);广州市重点领域研发计划(202007020008);广东省软科学研究计划(2019B101001011) |
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| Author | Institution |
| ZHANG Long-long | School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China;a.The Key Lab of Guangdong for Modern Surface Engineering Technology, b.National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China |
| HUANG Ji-bo | a.The Key Lab of Guangdong for Modern Surface Engineering Technology, b.National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China |
| DIAO Peng-yuan | a.The Key Lab of Guangdong for Modern Surface Engineering Technology, b.National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China |
| LI De-yuan | School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China |
| HUANG Ren-zhong | a.The Key Lab of Guangdong for Modern Surface Engineering Technology, b.National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China |
| ZHANG Nan-nan | School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China |
| XIE Ying-chun | a.The Key Lab of Guangdong for Modern Surface Engineering Technology, b.National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650, China |
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| 中文摘要: |
| 目的 采用高压冷喷涂技术制备低氧化、致密、耐摩擦磨损的CuZn35涂层，并探究加速气体温度对CuZn35涂层性能的影响。方法 利用高压冷喷涂技术在铝板上沉积CuZn35涂层，探究加速气体温度对冷喷涂CuZn35涂层微观结构及耐摩擦磨损性能的影响。在载荷为2 N时，在旋转式摩擦磨损试验仪上进行试验，对比铸态CuZn35材料的耐磨性能，评估在压力为5 MPa，加速气体温度为400、600、800 ℃条件下冷喷涂制备的CuZn35涂层的耐磨性能。通过光学显微镜(OM)、扫描电镜(SEM)、三维轮廓仪(3D Profiler )对涂层的微观结构和磨损表面形貌进行分析。结果 当冷喷涂加速气体温度从400 ℃升至800 ℃时，CuZn35涂层内部颗粒的变形量不断增大，颗粒之间形成了较好的结合，孔隙率从2.67%降至0.5%以下，硬度从200HV0.3升至242HV0.3，涂层磨损率从3.67 mm3/(N.mm)降至1.80 mm3/(N.mm)。在温度为800 ℃条件下制备的CuZn35涂层表现出最优的耐摩擦磨损性能，在磨损过程中涂层材料未发生明显的块状脱落现象，仅其表面有轻微磨痕，涂层的磨损率较低，与铸态CuZn35材料相近。结论 高压冷喷涂技术可获得与铸态CuZn35材料耐磨性能相近的CuZn35涂层。随着冷喷涂加速气体温度的升高，CuZn35涂层的孔隙、微裂纹等缺陷显著减少，涂层颗粒间的结合性增强，涂层的硬度逐渐增大。在摩擦磨损实验中，涂层的耐磨性能随着制备过程中加速气体温度的升高显著增强。 |
| 英文摘要: |
| CuZn35 brass has high strength and toughness, excellent thermal conductivity, electrical conductivity and corrosion resistance, so it is widely used as a protective coating in thin-walled tubes and turbine blades. At present, CuZn35 coatings are usually prepared by arc spraying, which has high porosity and poor wear resistance. Cold spraying is a promising coating deposition technique for fabricating anti-wear composite coatings. However, up to now, there are few studies on the preparation of CuZn35 coatings by cold spraying method. Cu/Zn mixed powder was often used in the preparation of CuZn coatings, and the composition uniformity and wear resistance of the coatings were poor. During the cold spraying process, the particle temperature before deposition was one of the most important parameters for achieving high-quality coatings. In the present study, by using CuZn35 alloy powder instead of mixed Cu/Zn powder, non-oxidized, density and anti-wear CuZn35 coatings were prepared by high pressure cold spraying. Further, the effect of accelerated gas temperature used during cold spraying on the microstructure and properties of CuZn35 coatings was explored. |
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