Hard thin coating directly deposited on soft steel substrate often suffers low adhesion strength and load-bearing capacity. In this work, CrNx-type adhesion layers (ALs) were introduced between hard AlCrN coating and soft cool-work tool steel substrate to enhance the adhesion strength and wear performance. The microstructure of CrNx ALs prepared with different nitrogen pressure and its influence on adhesion strength and tribological properties were investigated. The results show that with the nitrogen pressure increase from 0.5 Pa to 3.0 Pa, the phase transformation sequences occurring in ALs are: Cr + Cr₂N → Cr₂N + CrN → CrN. The adhesion strength increases with the increase of nitrogen pressure due to the formation of CrN which provides better load support resistance than the fragile Cr₂N and soft Cr. In addition, the adhesion strength of the samples with ALs is always higher than that of the one without ALs. The improvement of adhesion strength for samples with CrNx-type ALs is beneficial for improving wear resistance, especially at high wearing loads.

中文翻译：

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通过引入CRNX粘附层提高冷作工具钢ALCRN涂层的粘附强度和耐磨性能

直接沉积在软钢基材上的硬质薄涂层通常具有较低的附着强度和承载能力。在这项工作中，CrNX在硬质AlCrN涂层和软质冷作工具钢基体之间引入-型粘附层（ALs），以提高粘附强度和耐磨性能。CrN的微观结构X研究了在不同氮气压力下制备的ALs及其对粘合强度和摩擦学性能的影响。结果表明，随着氮气压力从0.5 Pa增加到3.0 Pa，ALs中发生的相变序列为：Cr + Cr ₂ N→Cr ₂ N + CrN→铬氮。由于CrN的形成提供了比易碎的Cr ₂ N和软的Cr更好的负载支撑阻力，因此粘合强度随着氮气压力的增加而增加。此外，具有 AL 的样品的粘附强度始终高于没有 AL 的样品。用 CrN 提高样品的粘合强度X-型 AL 有利于提高耐磨性，尤其是在高磨损负荷下。