Titanium carbonitride (TiCN) coating was prepared on 45# carbon steel by electrical discharge coating (EDC), and the compositions, morphology and microstructure of the coating were studied. In addition, its friction a...Titanium carbonitride (TiCN) coating was prepared on 45# carbon steel by electrical discharge coating (EDC), and the compositions, morphology and microstructure of the coating were studied. In addition, its friction and wear behaviors relative to the physical vapor deposition (PVD) TiN coating were investigated. The results show that the TiCN coating features a thickness of 15μm with a primary phase of TiC 0.3 N 0.7 . The wear rates of the two coatings have no clear distinction at low applied loads. However, severe abrasive wear appears in the PVD TiN coating when the applied load exceeds 30 N, while the TiCN coating features better wear resistance. The abrasive wear with coating peelings is found to be the predominant wear mechanism at high applied loads.展开更多
以草酸盐、磷酸盐和碳酸盐为原料,采用喷雾干燥法制备前驱体,经固相烧结制得钠离子电池NaFePO_4正极材料。通过X射线衍射分析、扫描电镜、激光衍射粒度分析、充放电测试、循环伏安法对材料进行了结构、形貌及电化学性能表征。结果表明,...以草酸盐、磷酸盐和碳酸盐为原料,采用喷雾干燥法制备前驱体,经固相烧结制得钠离子电池NaFePO_4正极材料。通过X射线衍射分析、扫描电镜、激光衍射粒度分析、充放电测试、循环伏安法对材料进行了结构、形貌及电化学性能表征。结果表明,喷雾干燥制得了球形前驱体,经低温烧结的钠离子电池NaFePO_4正极材料具有良好的电化学活性,其嵌钠平台在3.0 V左右,在0.1C倍率下,其首次放电容量为100 m Ah/g,经过30次循环,其可逆放电比容量达93 m Ah/g。展开更多
基金Project(51075075)supported by the National Natural Science Foundation of China
文摘Titanium carbonitride (TiCN) coating was prepared on 45# carbon steel by electrical discharge coating (EDC), and the compositions, morphology and microstructure of the coating were studied. In addition, its friction and wear behaviors relative to the physical vapor deposition (PVD) TiN coating were investigated. The results show that the TiCN coating features a thickness of 15μm with a primary phase of TiC 0.3 N 0.7 . The wear rates of the two coatings have no clear distinction at low applied loads. However, severe abrasive wear appears in the PVD TiN coating when the applied load exceeds 30 N, while the TiCN coating features better wear resistance. The abrasive wear with coating peelings is found to be the predominant wear mechanism at high applied loads.
文摘以草酸盐、磷酸盐和碳酸盐为原料,采用喷雾干燥法制备前驱体,经固相烧结制得钠离子电池NaFePO_4正极材料。通过X射线衍射分析、扫描电镜、激光衍射粒度分析、充放电测试、循环伏安法对材料进行了结构、形貌及电化学性能表征。结果表明,喷雾干燥制得了球形前驱体,经低温烧结的钠离子电池NaFePO_4正极材料具有良好的电化学活性,其嵌钠平台在3.0 V左右,在0.1C倍率下,其首次放电容量为100 m Ah/g,经过30次循环,其可逆放电比容量达93 m Ah/g。
