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Development of a Graphite Coating and Its Transfer from Batch to Coil Process for Application in PEMFC for Hydrogen-Powered Vehicles
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作者 Maurizio Giorgio Maximilian Steinhorst +2 位作者 Slavcho Topalski Teja Roch Christoph Leyens 《Advances in Materials Physics and Chemistry》 2022年第4期58-67,共10页
In the present paper, coating systems consisting of a metallic corrosion barrier and a conductive graphitic carbon layer were deposited by a DC vacuum arc process. The coatings were developed in a batch process for ap... In the present paper, coating systems consisting of a metallic corrosion barrier and a conductive graphitic carbon layer were deposited by a DC vacuum arc process. The coatings were developed in a batch process for application in the polymer electrolyte membrane fuel cell (PEMFC), and transferred to a continuous coil process to facilitate industrial mass production. The coating samples in the coil process had to achieve comparable results to the samples produced in the batch process, to meet the requirements of the environment prevailing in the fuel cell.The transfer to roll-to-roll processes is a crucial factor for commercial upscaling of PEMFC production. The experimental results showed that the electrical conductivity and corrosion resistance of the samples in the coil process were significantly improved compared to the uncoated base material and showed comparable performance to batch coated samples. X-ray photoelectron spectroscopy (XPS) was performed to determine the depth profile and the surface composition. Additional measurements were recorded for the contact resistances using the four-wire sensing method as well as corrosion resistance using potentiodynamic methods. 展开更多
关键词 Graphit-Like-Carbon (glc) Batch coating Coil coating Bipolar Plate
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GLC涂层刀具干切削性能研究 被引量:1
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作者 牛文莉 马跃林 +1 位作者 张永宏 严国英 《陕西理工学院学报(自然科学版)》 2016年第1期6-9,共4页
涂层刀具是刀具的发展趋势,是满足高速、强力切削的有效手段。采用YT15硬质合金为基体的GLC涂层刀具,通过改变不同的切削参数,进行了干切削LY12铝合金的切削性能实验。实验结果表明:GLC涂层切削时不易产生积屑瘤,切削温度较低,刀具耐用... 涂层刀具是刀具的发展趋势,是满足高速、强力切削的有效手段。采用YT15硬质合金为基体的GLC涂层刀具,通过改变不同的切削参数,进行了干切削LY12铝合金的切削性能实验。实验结果表明:GLC涂层切削时不易产生积屑瘤,切削温度较低,刀具耐用度显著提高,干切削LY12铝合金时具有良好的切削性能。 展开更多
关键词 自润滑 glc涂层刀具 干切削 切削性能
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GLC涂层与YT15干切削性能研究
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作者 牛文莉 马跃林 +1 位作者 张永宏 严国英 《科技通报》 2018年第6期82-84,共3页
GLC涂层是一种类石墨碳膜涂层,具有良好的自润滑性能,使得刀具和工件材料的摩擦系数大大降低,减少了摩擦热,但是目前还没有GLC涂层切削性能的相关研究。本文采用牌号为YT15的硬质合金刀具和以YT15为基体的硬质合金GLC涂层刀具,在车床上... GLC涂层是一种类石墨碳膜涂层,具有良好的自润滑性能,使得刀具和工件材料的摩擦系数大大降低,减少了摩擦热,但是目前还没有GLC涂层切削性能的相关研究。本文采用牌号为YT15的硬质合金刀具和以YT15为基体的硬质合金GLC涂层刀具,在车床上进行了LY12铝合金的干切削性能实验。实验数据对比结果表明,在相同切削条件下,GLC涂层切削性能远超YT15硬质合金,GLC涂层刀具比YT15刀具更适合切削LY12铝合金。 展开更多
关键词 自润滑 涂层刀具 glc 切削性能
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非平衡磁控溅射制备CrTiAlN/GLC复合涂层的表面性能及摩擦磨损性能研究 被引量:5
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作者 朱志勇 施雯 +2 位作者 苑俊峰 李潇 万紫 《上海金属》 CAS 北大核心 2013年第1期21-25,共5页
采用非平衡磁控溅射技术在新型冷作模具钢表面制备CrTiAlN/GLC复合涂层,并应用拉曼光谱(Raman)、纳米压痕、磨损试验等测试方法分析与考察该复合涂层的组织结构、纳米硬度、结合强度和摩擦磨损性能。结果表明:CrTiAlN/GLC复合涂层由CrTi... 采用非平衡磁控溅射技术在新型冷作模具钢表面制备CrTiAlN/GLC复合涂层,并应用拉曼光谱(Raman)、纳米压痕、磨损试验等测试方法分析与考察该复合涂层的组织结构、纳米硬度、结合强度和摩擦磨损性能。结果表明:CrTiAlN/GLC复合涂层由CrTiAlN和以sp2为主的非晶及微晶结构GLC组成,其纳米硬度(17.38 GPa)介于CrTiAlN与GLC单一涂层之间,但有最高的弹性模量(186.35 GPa),并与基体结合状况良好(临界载荷Lc≥60 N)。此外,复合涂层还明显地改善了基体表面的摩擦学性能,干摩擦系数为0.1~0.35,油润滑磨损率(<0.7×10-12mm3/N.mm)约为基体(1.36×10-12 mm3/N.mm)的50%。 展开更多
关键词 CrTiAlN glc涂层 非平衡磁控溅射 拉曼光谱 性能 磨损
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非平衡磁控溅射掺Cr类石墨镀层的结构分析 被引量:1
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作者 严少平 蒋百灵 +2 位作者 张永宏 陈迪春 李洪涛 《安徽理工大学学报(自然科学版)》 CAS 2009年第4期71-76,共6页
采用非平衡磁控溅射离子镀技术,通过调节Cr靶的溅射功率,在单晶硅基片上沉积制备了一系列不同Cr含量的类石墨(Cr-GLC)镀层样品。利用Raman光谱仪、X射线光电子能谱(XPS)、透射电子电镜(TEM)、显微硬度计分析了Cr-GLC的微观结构和显微硬... 采用非平衡磁控溅射离子镀技术,通过调节Cr靶的溅射功率,在单晶硅基片上沉积制备了一系列不同Cr含量的类石墨(Cr-GLC)镀层样品。利用Raman光谱仪、X射线光电子能谱(XPS)、透射电子电镜(TEM)、显微硬度计分析了Cr-GLC的微观结构和显微硬度。结果表明,利用非平衡磁控溅射得到的Cr-GLC镀层,随Cr含量的增高,硬度逐渐降低并趋于稳定。当Cr含量小于4%时,Cr只以单质非晶态分布于非晶GLC中,Cr的掺杂降低了内应力;当Cr含量超过4%后,还有CrC_X纳米晶存在于非晶态的GLC中;镀层由C、Cr和CrC_X纳米晶粒组成非晶结构。 展开更多
关键词 类石墨镀层 微观结构 显微硬度
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In Vitro Biocompatibility of MC3T3-E1 Osteoblast-like Cells on Arg-Gly-Asp Acid Peptides Immobilized Graphite-like Carbon Coating on Carbon/Carbon Composites
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作者 Sheng Cao He-Jun Li +2 位作者 Ke-Zhi Li Jin-Hua Lu Lei-Lei Zhang 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2017年第6期558-566,共9页
Carbon/carbon (C/C) composites were deposited with graphite-like carbon (GLC) coating, and then, Arg-Gly- Asp acid (RGD) peptides were successfully immobilized onto the functionalized GLC coating. GLC coating wa... Carbon/carbon (C/C) composites were deposited with graphite-like carbon (GLC) coating, and then, Arg-Gly- Asp acid (RGD) peptides were successfully immobilized onto the functionalized GLC coating. GLC coating was utilized to prevent carbon particles releasing and create a uniform surface condition for C/C composites. RGD peptides were utilized to improve biocompatibility of GLC coating. Surface chemical characterizations of functionalized GLC coating were detected by contact angle measurement, X-ray photoelectron spectroscopy and Raman spectra. Optical morphology of GLC coatings was observed by confocal laser scanning microscopy. In vitro biological performance was determined using samples seeded with MC3T3-E1 osteoblast-like cells and cultured for 1 week. Surface characterizations and morphological analysis indicated that C/C composites were covered by a dense and uniform GLC coating. Contact angle of GLC coating was reduced to 27.2° when it was functionalized by H202 oxidation at 40 ℃ for 1 h. In vitro cytological test showed that the RGD peptides immobilized GLC coating had a significant improvement in biocompatibility. It was suggested that RGD peptides provided GLC coating with a bioactive surface to improve cell adhesion and proliferation on C/C composites. 展开更多
关键词 MC3T3-E1 osteoblast-like cells Carbon/carbon composites Graphite-like carbon glc coating Arg-Gly-Asp acid (RGD) peptides Surface modification
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