采用真空电弧离子镀工艺在H13钢表面制备Ti Al N/Cr Al N复合涂层,利用划痕试验仪、盘式摩擦磨损试验机、金相显微镜和努氏硬度计分析Ti Al N/Cr Al N膜层的结合力和摩擦学性能,金相组织形貌和试样表面的显微硬度。结果表明,Ti Al N/Cr ...采用真空电弧离子镀工艺在H13钢表面制备Ti Al N/Cr Al N复合涂层,利用划痕试验仪、盘式摩擦磨损试验机、金相显微镜和努氏硬度计分析Ti Al N/Cr Al N膜层的结合力和摩擦学性能,金相组织形貌和试样表面的显微硬度。结果表明,Ti Al N/Cr Al N复合薄膜表面组织分布均匀,结合致密,涂层与基体间的结合力是影响涂层承载能力的主要因素之一,Ti Al N复合涂层的摩擦性能优于H13基体和Cr Al N复合涂层的摩擦性能,Ti Al N/Cr Al N复合涂层的结合力分别为35 N和24 N,沉积有Ti Al N涂层试样表面摩擦系数最小,减摩效果最好,耐磨性能优越,并能有效地抵抗摩擦磨损。展开更多
In this work,the chromium aluminum nitride(CrAlN)coatings were prepared on TC11 titanium alloy by composite magnetic field cathodic arc ion plating with controllable pulse electromagnetic combined with permanent magne...In this work,the chromium aluminum nitride(CrAlN)coatings were prepared on TC11 titanium alloy by composite magnetic field cathodic arc ion plating with controllable pulse electromagnetic combined with permanent magnet.The effects of electromagnetic frequency on the morphology,microstructure,nano-hardness and elastic modulus of the coatings were investigated by scanning electron microscope(SEM),X-ray diffraction(XRD)and nano-indenter.This paper has mainly studied the influence of CrAlN coatings which are prepared at various electromagnetic frequencies on the wear and erosion resistance through a series of wear and solid particle erosion experiments.It was found that the deposition rate of CrAlN coatings increases with the increase of electromagnetic frequency.And CrAlN coatings all preferentially grew along the(111)crystal plane.At 16.7 Hz,with the increase of pulsed electromagnetic frequency,the hardness is the highest(23.6 GPa)and the adhesion is the highest(41.5 N).In addition,the coating deposition exhibited the best wear and solid erosion resistance at 16.7 Hz and 33.3 Hz,the friction coefficient is about 0.35,and the erosion rate is about 0.2μm/g at 30°and less than 1μm/g at 90°,respectively.These results indicate that the CrAlN coating formed at an appropriate pulsed electromagnetic frequency can achieve excellent mechanical properties,wear and solid erosion resistance.展开更多
文摘采用真空电弧离子镀工艺在H13钢表面制备Ti Al N/Cr Al N复合涂层,利用划痕试验仪、盘式摩擦磨损试验机、金相显微镜和努氏硬度计分析Ti Al N/Cr Al N膜层的结合力和摩擦学性能,金相组织形貌和试样表面的显微硬度。结果表明,Ti Al N/Cr Al N复合薄膜表面组织分布均匀,结合致密,涂层与基体间的结合力是影响涂层承载能力的主要因素之一,Ti Al N复合涂层的摩擦性能优于H13基体和Cr Al N复合涂层的摩擦性能,Ti Al N/Cr Al N复合涂层的结合力分别为35 N和24 N,沉积有Ti Al N涂层试样表面摩擦系数最小,减摩效果最好,耐磨性能优越,并能有效地抵抗摩擦磨损。
基金Projects(2017GDAS CX-0202,2017GDAS CX-0111,2018 GDAS CX-0402) supported by Guangdong Academy of Science’ Special Project of Science and Technology Development,ChinaProject(2014B070705007) supported by Guangdong Science and Technology Plan Project,China+1 种基金Project(2016A030312015) supported by Scientific Research Fund of Guangdong Province,ChinaProject(2017A070701027) supported by Guangdong Science and Technology Program,China。
文摘In this work,the chromium aluminum nitride(CrAlN)coatings were prepared on TC11 titanium alloy by composite magnetic field cathodic arc ion plating with controllable pulse electromagnetic combined with permanent magnet.The effects of electromagnetic frequency on the morphology,microstructure,nano-hardness and elastic modulus of the coatings were investigated by scanning electron microscope(SEM),X-ray diffraction(XRD)and nano-indenter.This paper has mainly studied the influence of CrAlN coatings which are prepared at various electromagnetic frequencies on the wear and erosion resistance through a series of wear and solid particle erosion experiments.It was found that the deposition rate of CrAlN coatings increases with the increase of electromagnetic frequency.And CrAlN coatings all preferentially grew along the(111)crystal plane.At 16.7 Hz,with the increase of pulsed electromagnetic frequency,the hardness is the highest(23.6 GPa)and the adhesion is the highest(41.5 N).In addition,the coating deposition exhibited the best wear and solid erosion resistance at 16.7 Hz and 33.3 Hz,the friction coefficient is about 0.35,and the erosion rate is about 0.2μm/g at 30°and less than 1μm/g at 90°,respectively.These results indicate that the CrAlN coating formed at an appropriate pulsed electromagnetic frequency can achieve excellent mechanical properties,wear and solid erosion resistance.
