CrTiAlN/TiAlN composite coatings were deposited on cemented carbide by using a home-made industrial scale multi-arc ion plating system. The samples were studied by X-ray diffraction, scanning electron microscopy （SEM...CrTiAlN/TiAlN composite coatings were deposited on cemented carbide by using a home-made industrial scale multi-arc ion plating system. The samples were studied by X-ray diffraction, scanning electron microscopy （SEM）, microhardness and ball-on-disk testing. The properties of the CrTiAlN/TiAlN coatings were significantly influenced by the microstructure and the deposition time ratio of TiAlN over CrTiAlN layers. With the increase of deposition time ratio, the microhardness of CrTiAlN/TiAlN increased from 28.6 GPa to 37.5 GPa, much higher than that of CrTiAlN coatings. The friction coefficients of the CrTiAlN/TiAlN coatings were higher than those of CrTiAlN coatings against a cemented carbide ball. The microhardness of the CrTiAlN/TiAlN coatings was changed after annealing at 800 ℃, and the friction coefficients of the annealed coatings were increased against the cemented carbide ball.展开更多
目前,关于N_2流量对磁控溅射CrTiAlN涂层性能影响的研究不多。在SDC99冷作模具钢表面以不同N_2流量条件磁控溅射CrTiAlN涂层,采用扫描电镜、X射线衍射仪、显微硬度仪、显微镜和摩擦磨损试验分析涂层性能。结果表明:随着N_2流量的降低,...目前,关于N_2流量对磁控溅射CrTiAlN涂层性能影响的研究不多。在SDC99冷作模具钢表面以不同N_2流量条件磁控溅射CrTiAlN涂层,采用扫描电镜、X射线衍射仪、显微硬度仪、显微镜和摩擦磨损试验分析涂层性能。结果表明:随着N_2流量的降低,涂层中Cr元素含量也随之下降,而N元素含量则逐渐增大,CrN(211)晶面的衍射峰缓慢增加,而CrN(200)衍射峰明显增加;CrTiAlN涂层硬度较基材提高约25%,随N_2流量降低,涂层的硬度逐渐增大;在60 m L/min的N_2流量下制备的CrTiAlN涂层和基体间结合力最佳,涂层对表面磨粒磨损情况起到最佳改善效果,此时磨痕的"犁沟"深度与宽度都减小,涂层耐磨性得到显著提高。展开更多
成功制备了多弧离子镀 Ti Al N/Ti多元复合涂层的截面透射试样 ,并分别用 TEM和 EDS等手段研究了涂层的组织结构和界面结构。结果表明 ,多晶 (Ti,Al) N相是 Ti Al N的主要组成相 ,过渡 Ti层呈现多晶 α- Ti结构。研究发现 ,在 Ti Al N-...成功制备了多弧离子镀 Ti Al N/Ti多元复合涂层的截面透射试样 ,并分别用 TEM和 EDS等手段研究了涂层的组织结构和界面结构。结果表明 ,多晶 (Ti,Al) N相是 Ti Al N的主要组成相 ,过渡 Ti层呈现多晶 α- Ti结构。研究发现 ,在 Ti Al N- Ti过渡层界面、Ti过渡层 - HSS基体界面分别存在一个薄的中间层 ,通过衍射和 EDS分析认为前者是 Ti2 Al N相 ,而后者则是 Fe Ti界面相 ,用 XTEM还观察到 Fe Ti相与基体展开更多
基金supported by the International Cooperation Program of the Ministry of Science and Technology of China(No.2011DFR50580)Basic Research Funds of the Central Universities of China(No.2012202020217)
文摘CrTiAlN/TiAlN composite coatings were deposited on cemented carbide by using a home-made industrial scale multi-arc ion plating system. The samples were studied by X-ray diffraction, scanning electron microscopy （SEM）, microhardness and ball-on-disk testing. The properties of the CrTiAlN/TiAlN coatings were significantly influenced by the microstructure and the deposition time ratio of TiAlN over CrTiAlN layers. With the increase of deposition time ratio, the microhardness of CrTiAlN/TiAlN increased from 28.6 GPa to 37.5 GPa, much higher than that of CrTiAlN coatings. The friction coefficients of the CrTiAlN/TiAlN coatings were higher than those of CrTiAlN coatings against a cemented carbide ball. The microhardness of the CrTiAlN/TiAlN coatings was changed after annealing at 800 ℃, and the friction coefficients of the annealed coatings were increased against the cemented carbide ball.
文摘目前,关于N_2流量对磁控溅射CrTiAlN涂层性能影响的研究不多。在SDC99冷作模具钢表面以不同N_2流量条件磁控溅射CrTiAlN涂层,采用扫描电镜、X射线衍射仪、显微硬度仪、显微镜和摩擦磨损试验分析涂层性能。结果表明:随着N_2流量的降低,涂层中Cr元素含量也随之下降,而N元素含量则逐渐增大,CrN(211)晶面的衍射峰缓慢增加,而CrN(200)衍射峰明显增加;CrTiAlN涂层硬度较基材提高约25%,随N_2流量降低,涂层的硬度逐渐增大;在60 m L/min的N_2流量下制备的CrTiAlN涂层和基体间结合力最佳,涂层对表面磨粒磨损情况起到最佳改善效果,此时磨痕的"犁沟"深度与宽度都减小,涂层耐磨性得到显著提高。
文摘成功制备了多弧离子镀 Ti Al N/Ti多元复合涂层的截面透射试样 ,并分别用 TEM和 EDS等手段研究了涂层的组织结构和界面结构。结果表明 ,多晶 (Ti,Al) N相是 Ti Al N的主要组成相 ,过渡 Ti层呈现多晶 α- Ti结构。研究发现 ,在 Ti Al N- Ti过渡层界面、Ti过渡层 - HSS基体界面分别存在一个薄的中间层 ,通过衍射和 EDS分析认为前者是 Ti2 Al N相 ,而后者则是 Fe Ti界面相 ,用 XTEM还观察到 Fe Ti相与基体
