Diamond coated tools are widely applied in the field of machining, however, its use is strictly limited by weak coating-substrate adhesion. As an effective method to generate functional surfaces, the technology of texture was applied in this research to try to change the distribution of interfacial stress and improve the adhesion of coating-substrate system. Micro-textures with different densities and shapes were prepared on the surface of cemented carbide (YG6) by ultraviolet nanosecond laser, and heteroepitaxial growth of diamond coating on textured surface was realized by hot filament chemical vapor deposition (HFCVD) technology. By means of Rockwell indentation tests, micro-Raman spectrometer and thermo-solid coupling simulation analysis, the effect of textures on the adhesion of diamond coating was studied. Results indicate that the adhesion of coating-substrate increases with the increase of the micro-textures density. The normal compressive stress of diamond coating at the edges of texture inhibits the propagation of interfacial cracks, resulting in the deviation of the crack propagation path.

金刚石涂层刀具广泛用于机械加工领域，但是，其使用受到涂层与基体之间附着力弱的严格限制。作为一种生成功能表面的有效方法，本研究应用纹理技术来试图改变界面应力的分布并改善涂层与基材之间的附着力。用紫外纳秒激光在硬质合金（YG6）表面制备了不同密度和形状的微细纹理，并通过热丝化学气相沉积（HFCVD）技术实现了织构表面金刚石涂层的异质外延生长。通过洛氏压痕试验，显微拉曼光谱仪和热固耦合模拟分析，研究了织构对金刚石涂层附着力的影响。结果表明，涂​​层涂层的附着力随着微织构密度的增加而增加。织构边缘金刚石涂层的法向压应力会抑制界面裂纹的扩展，从而导致裂纹扩展路径的偏离。