The effects of picosecond Nd:YAG laser irradiation on chemical and morphological surface characteristics of the commercially pure titanium and Ti-13Nb-13Zr alloy in air and argon atmospheres were studied under different laser output energy values. During the interaction of laser irradiation with the investigated materials, a part of the energy was absorbed on the target surface, influencing surface modifications. Laser beam interaction with the target surface resulted in various morphological alterations, resulting in crater formation and the presence of microcracks and hydrodynamic structures. Moreover, different chemical changes were induced on the target materials’ surfaces, resulting in the titanium oxide formation in the irradiation-affected area and consequently increasing the irradiation energy absorption. Given the high energy absorption at the site of interaction, the dimensions of the surface damaged area increased. Consequently, surface roughness increased. The appearance of surface oxides also led to the increased material hardness in the surface-modified area. Observed chemical and morphological changes were pronounced after laser irradiation of the Ti-13Nb-13Zr alloy surface.

研究了在不同的激光输出能量值下，皮秒Nd：YAG激光辐照对商业纯钛和Ti-13Nb-13Zr合金在空气和氩气气氛中的化学和形态表面特征的影响。在激光辐照与被研究材料的相互作用过程中，一部分能量被吸收在目标表面上，从而影响表面改性。激光束与目标表面的相互作用导致各种形态学改变，从而形成火山口，并出现微裂纹和流体动力学结构。此外，在目标材料的表面上引起了不同的化学变化，导致在受辐照区域形成氧化钛，因此增加了辐照能量吸收。考虑到在相互作用部位的高能量吸收，表面受损区域的尺寸增加。因此，表面粗糙度增加。表面氧化物的出现还导致表面改性区域的材料硬度增加。激光辐照Ti-13Nb-13Zr合金表面后，观察到明显的化学和形态变化。