在 NCU PP技术沉积的 Ti N- Mo S2 / Ti N复合膜中添加 A1元素并改变部分沉积工艺 ,可以在 1Cr18Ni9Ti基体上沉积出 Ti Al N - Mo S2 / Ti Al N硬质润滑膜 .利用 SEM,XPS等手段研究涂层的成分、微观结构等 .通过摩擦学试验测定其结合强...在 NCU PP技术沉积的 Ti N- Mo S2 / Ti N复合膜中添加 A1元素并改变部分沉积工艺 ,可以在 1Cr18Ni9Ti基体上沉积出 Ti Al N - Mo S2 / Ti Al N硬质润滑膜 .利用 SEM,XPS等手段研究涂层的成分、微观结构等 .通过摩擦学试验测定其结合强度等性能 .结果表明 ,在钻头上沉积 Ti Al N- Mo S2 / Ti Al N硬质膜 ,可使其在钻削过程中具有优异的耐磨、减摩和耐高温等性能 。展开更多
Recent research on microstructural characteristics and oxidation behavior of Ti(1-x)AlxN thin film were surveyed. The Ti(1-x)AlxN coatings have three different phase regions, Bl structure for lower x value, wurtzite s...Recent research on microstructural characteristics and oxidation behavior of Ti(1-x)AlxN thin film were surveyed. The Ti(1-x)AlxN coatings have three different phase regions, Bl structure for lower x value, wurtzite structure for higher x value and unidentified structure for medium x value. Based upon the selective oxidation mechanism the oxidation results of Ti(1-x)AlxN thin film with different Ti/Al ratio were predicated.展开更多
为研究Ti Al N涂层硬质合金刀具车削钛合金螺纹的切削性能,采用Ti Al N涂层硬质合金螺纹刀片进行试验,得出了在进给量2.4mm/r、背吃刀量0.2mm时的最优切削速度为28m/min。在此条件下,验证了刀片前角较小时主切削力小,散热效率高;而前角...为研究Ti Al N涂层硬质合金刀具车削钛合金螺纹的切削性能,采用Ti Al N涂层硬质合金螺纹刀片进行试验,得出了在进给量2.4mm/r、背吃刀量0.2mm时的最优切削速度为28m/min。在此条件下,验证了刀片前角较小时主切削力小,散热效率高;而前角较大时,切屑螺旋角小且切削长度较长,断屑效果不佳。当进给方向向左时,后刀面的磨损主要是在左后刀面,磨损相对右后刀面严重,较大的后角使得刀片右后刀面磨损宽度小,涂层剥落宽度也小,寿命更长。展开更多
为研究Ti Al N涂层刀具的切削性能和磨损机理,首先采用304不锈钢球对Ti Al N涂层进行摩擦磨损试验,对其磨损形态和摩擦系数进行分析比较。同时,釆用电弧离子镀技术基于YT15硬质合金刀具制备了YT15-TiAlN涂层刀具,并利用该刀具对40Cr钢...为研究Ti Al N涂层刀具的切削性能和磨损机理,首先采用304不锈钢球对Ti Al N涂层进行摩擦磨损试验,对其磨损形态和摩擦系数进行分析比较。同时,釆用电弧离子镀技术基于YT15硬质合金刀具制备了YT15-TiAlN涂层刀具,并利用该刀具对40Cr钢进行了切削试验;同时,将涂层摩擦磨损特性、切削力以及刀具磨损机理作为衡量指标进行讨论研究,并与未涂层刀具进行对比。结果表明,YT15-TiAlN涂层刀具的切削性能大幅提高,Ti Al N涂层改善了刀具的摩擦特性,抗磨损能力大大增加,刀具的使用寿命提高了约1倍左右。展开更多
The TiN, TiAlN, and TiAlSiN coatings were prepared on YT14 cutting tool surface with CAIP（cathode arc ion plating）, the surface morphologies and phases were analyzed with FESEM（field emission scanning electron micr...The TiN, TiAlN, and TiAlSiN coatings were prepared on YT14 cutting tool surface with CAIP（cathode arc ion plating）, the surface morphologies and phases were analyzed with FESEM（field emission scanning electron microscopy）, and XRD（X-ray diffraction）, respectively, and the coating parameters such as 3D surface micro-topography, grain size, surface height, hierarchy, profile height, and power spectral density, etc, were measured with AFM（atomic force microscope）. The results show that the phases of TiN, TiAlN, and TiAlSiN coatings are TiN, TiN＋TiAlN, TiN＋Si_3N_4＋TiAlN, respectively, while the surface roughness Sa of TiN, TiAlN, and TiAlSiN coatings is 75.3, 98.9, and 42.1 nm, respectively, and the roughness depth Sk is 209, 389, and 54 nm, respectively, the sequence of average grain sizes is TiAlN〉TiN〉TiAlSiN. The surface bearing index Sbi of TiN, TiAlN, and TiAlSiN coatings is 0.884, 1.01, and 0.37, respectively, and the sequence of surface bearing capability is TiAlN〉TiN〉TiAlSiN. At the lower wavelength（102-103 nm）, the power spectral densities have a certain correlation, and the sequence of TiN〉TiAlN〉TiAlSiN, while the correlation is low at the higher wavelength（〉103 nm）.展开更多
文摘在 NCU PP技术沉积的 Ti N- Mo S2 / Ti N复合膜中添加 A1元素并改变部分沉积工艺 ,可以在 1Cr18Ni9Ti基体上沉积出 Ti Al N - Mo S2 / Ti Al N硬质润滑膜 .利用 SEM,XPS等手段研究涂层的成分、微观结构等 .通过摩擦学试验测定其结合强度等性能 .结果表明 ,在钻头上沉积 Ti Al N- Mo S2 / Ti Al N硬质膜 ,可使其在钻削过程中具有优异的耐磨、减摩和耐高温等性能 。
文摘Recent research on microstructural characteristics and oxidation behavior of Ti(1-x)AlxN thin film were surveyed. The Ti(1-x)AlxN coatings have three different phase regions, Bl structure for lower x value, wurtzite structure for higher x value and unidentified structure for medium x value. Based upon the selective oxidation mechanism the oxidation results of Ti(1-x)AlxN thin film with different Ti/Al ratio were predicated.
文摘为研究Ti Al N涂层硬质合金刀具车削钛合金螺纹的切削性能,采用Ti Al N涂层硬质合金螺纹刀片进行试验,得出了在进给量2.4mm/r、背吃刀量0.2mm时的最优切削速度为28m/min。在此条件下,验证了刀片前角较小时主切削力小,散热效率高;而前角较大时,切屑螺旋角小且切削长度较长,断屑效果不佳。当进给方向向左时,后刀面的磨损主要是在左后刀面,磨损相对右后刀面严重,较大的后角使得刀片右后刀面磨损宽度小,涂层剥落宽度也小,寿命更长。
文摘为研究Ti Al N涂层刀具的切削性能和磨损机理,首先采用304不锈钢球对Ti Al N涂层进行摩擦磨损试验,对其磨损形态和摩擦系数进行分析比较。同时,釆用电弧离子镀技术基于YT15硬质合金刀具制备了YT15-TiAlN涂层刀具,并利用该刀具对40Cr钢进行了切削试验;同时,将涂层摩擦磨损特性、切削力以及刀具磨损机理作为衡量指标进行讨论研究,并与未涂层刀具进行对比。结果表明,YT15-TiAlN涂层刀具的切削性能大幅提高,Ti Al N涂层改善了刀具的摩擦特性,抗磨损能力大大增加,刀具的使用寿命提高了约1倍左右。
基金Funded by the Jiangsu Province Science and Technology Support Program(Industry)(No.BE2014818)
文摘The TiN, TiAlN, and TiAlSiN coatings were prepared on YT14 cutting tool surface with CAIP（cathode arc ion plating）, the surface morphologies and phases were analyzed with FESEM（field emission scanning electron microscopy）, and XRD（X-ray diffraction）, respectively, and the coating parameters such as 3D surface micro-topography, grain size, surface height, hierarchy, profile height, and power spectral density, etc, were measured with AFM（atomic force microscope）. The results show that the phases of TiN, TiAlN, and TiAlSiN coatings are TiN, TiN＋TiAlN, TiN＋Si_3N_4＋TiAlN, respectively, while the surface roughness Sa of TiN, TiAlN, and TiAlSiN coatings is 75.3, 98.9, and 42.1 nm, respectively, and the roughness depth Sk is 209, 389, and 54 nm, respectively, the sequence of average grain sizes is TiAlN〉TiN〉TiAlSiN. The surface bearing index Sbi of TiN, TiAlN, and TiAlSiN coatings is 0.884, 1.01, and 0.37, respectively, and the sequence of surface bearing capability is TiAlN〉TiN〉TiAlSiN. At the lower wavelength（102-103 nm）, the power spectral densities have a certain correlation, and the sequence of TiN〉TiAlN〉TiAlSiN, while the correlation is low at the higher wavelength（〉103 nm）.
