Abstract The development of cutting technologies promotes the diversification of cutting tool materials. To better guide the design and preparation of the surface films on different tools, it is necessary to explore the relationship between substrate materials and films’ properties. The TiAlN-(TiAlN/CrAlSiN)–TiAlN composite films were coated on cemented carbide substrates with different content of Co binder and TiC addition by arc ion plating. The results showed that Co binder in the cemented carbide reduced the surface energies of substrates, and the film on the cemented carbide substrate with higher Co content grew slower. (Ti,W)C phase formed in the cemented carbide substrate since WC dissolved in TiC, which was favorable for the growth of film. (Ti,W)C phase in the cemented carbide substrate improved the bonding strength of the composite film, but it reduced the hardness of the film. High Co binder content in cemented carbide substrate was disadvantageous to both the adhesion and hardness of the film. The composite films deposited on the WC-6wt%Co and WC-15 wt%TiC-6wt%Co achieved the maximum hardness and best bonding strength, respectively. The wear mechanism of the composite films on all different cemented carbide substrates was the mixture form of abrasive wear, oxidative wear, diffusion and adhesive wear.

中文翻译：

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硬质合金基体中TiC添加量和Co结合剂含量对TiAlN基复合薄膜微观结构和力学性能的影响

摘要 切削技术的发展促进了刀具材料的多样化。为了更好地指导不同工具上表面薄膜的设计和制备，有必要探索基板材料与薄膜性能之间的关系。通过电弧离子镀将TiAlN-(TiAlN/CrAlSiN)-TiAlN复合薄膜涂覆在不同Co结合剂和TiC添加量的硬质合金基体上。结果表明，硬质合金中的Co结合剂降低了基体的表面能，Co含量较高的硬质合金基体上的薄膜生长较慢。由于WC溶解在TiC中，在硬质合金基体中形成(Ti,W)C相，有利于薄膜的生长。硬质合金基体中的(Ti,W)C相提高了复合膜的结合强度，但它降低了薄膜的硬度。硬质合金基体中高 Co 粘合剂含量对薄膜的附着力和硬度均不利。沉积在WC-6wt%Co和WC-15wt%TiC-6wt%Co上的复合薄膜分别达到了最大硬度和最佳结合强度。不同硬质合金基体上复合膜的磨损机理为磨粒磨损、氧化磨损、扩散和粘附磨损的混合形式。