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超声波辅助射流电沉积Ni-W-Al2O3纳米复合镀层工艺参数优化及性能研究

Optimization of process parameters and properties of ultrasonic assisted jet electrodeposition of Ni-W-Al2O3 nanocomposite coating

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【作者】 马春阳何泓鑫夏法锋王晨苑博旭刘晓平王俊夫

【Author】 MA Chunyang;HE Hongxin;XIA Fafeng;WANG Chen;YUAN Boxu;LIU Xiaoping;WANG Junfu;School of Engineering, Northeast Agricultural University;State Grid Heilongjiang Electric Power Co., Ltd.;

【通讯作者】 夏法锋;

【机构】 东北农业大学工程学院国网黑龙江省电力有限公司哈尔滨供电公司

【摘要】 为提高农机部件表面耐磨性能,采用超声波辅助射流电沉积方法制备Ni-W-Al2O3纳米复合镀层。利用JMP软件中预制的响应曲面刻画器、等高线刻画器及预制刻画器分析不同工艺参数(射流速率、Al2O3纳米粒子含量及超声波功率)间交互作用对纳米复合镀层显微硬度的影响,确定最佳工艺参数组合。为验证制备NiW-Al2O3纳米复合镀层最优工艺参数组合,利用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、透射电子显微镜(TEM)、显微硬度计及摩擦磨损试验机等设备,测试不同工艺参数组合下制备的纳米复合镀层表面形貌、组织结构及性能。结果表明:射流速率、Al2O3纳米粒子含量、超声波功率、二次交互项及二次幂项均对纳米复合镀层显微硬度影响较为显著。经JMP软件优化后的制备工艺参数组合为:射流速率3.71 m·s-1,Al2O3纳米粒子含量15.38 g·L-1,超声波功率210 W。最优工艺参数组合制得纳米复合镀层具有表面形貌致密、晶粒细化程度高、显微硬度大(724.9 HV)、摩擦系数及磨损量低等特点。

【Abstract】 To enhance the wear resistance of agricultural machinery parts, ultrasonic-assisted jet electrodeposition was utilized to fabricate the Ni-W-Al2O3nanocomposite coatings. The response surface plotter, contour plotter, and preset plotter within JMP software were used to analyze the interactions among different process parameters(jet velocity, the Al2O3nanoparticle content, and ultrasonic power) on the microhardness of the nanocomposite coatings and to determine the optimal combination of process parameters. To validate the optimal process parameters for fabricating the Ni-W-Al2O3nanocomposite coatings, equipment such as Scanning Electron Microscope(SEM), X-ray Diffractometer(XRD), Transmission Electron Microscope(TEM), microhardness tester, and a tribometer were used to assess the surface morphology, microstructure, and properties of the coatings prepared under different process parameter combinations. The results indicated that jet velocity, Al2O3nanoparticle content,ultrasonic power, interaction terms, and quadratic terms significantly influenced the microhardness of the nanocomposite coatings. The optimized process parameters using JMP software were as the following:jet velocity of 3.71 m·s-1, Al2O3nanoparticle content of 15.38 g·L-1, and ultrasonic power of 210 W.Additionally, the coatings prepared with these optimal parameters exhibited a dense surface morphology, refined grain size, high microhardness(724.9 HV), and low friction coefficients and wear rates.

【基金】 国家自然科学基金项目(51974089)
  • 【文献出处】 东北农业大学学报 ,Journal of Northeast Agricultural University , 编辑部邮箱 ,2024年07期
  • 【分类号】S220;TQ153
  • 【下载频次】32
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