中国激光, 2003, 30 (11): 1053, 网络出版: 2006-06-27
ZnO纳米粉吸光特性及其应用实例
Optical Absorbability of ZnO Nanopowders and Application in Surface-hardening of Materials
激光技术 ZnO纳米晶须 光吸收 纳米黑化吸收剂 激光化 laser technique ZnO nanowhiskers light-absorption nano-absorbent laser-hardening
摘要
用热物理法制备ZnO纳米晶须和纳米粒子,该晶须从中心向空间三维拓展出四根针,针的直径由根部向顶部逐渐变小,使ZnO纳米晶须在很宽波段对光吸收。利用此特殊结构制备出纳米黑化吸收剂,并应用于激光表面强化。与传统黑化剂的效果相比,其5Cr5MoSiV钢淬硬层的显微硬度达到792Hv,增幅为6%;淬硬层的最大深度为0.60 mm,上升的幅度为20%;激光淬火功率下降了300 W,节能高达30%。
Abstract
ZnO nanopowders were synthesized by thermal physical method, which present two types of morphology, such as nanoparticles and nanowhiskers. The produced tetrapod nanowhiskers usually show four needle-like feet that originate from the center of the polyhedron. The nanowhiskers display a fantastic optical property of absorbing light, which is totally different from the nanoparticles. The nanowhiskers can enhance the absorptive ability of coating for CO 2 laser beam. The results show that the hardness and depth on the laser-hardened surface of steel 5Cr5MoSiV are improved dramatically. Compared with laser-hardening by using absorbent without the nanowhiskers, the hardening only demanded an 800 W output for CO 2 laser, saving the power as 30%.
吴润, 谢长生, 王爱华, 从善海, 杨英歌, 蔡伟平. ZnO纳米粉吸光特性及其应用实例[J]. 中国激光, 2003, 30(11): 1053. 吴润, 谢长生, 王爱华, 从善海, 杨英歌, 蔡伟平. Optical Absorbability of ZnO Nanopowders and Application in Surface-hardening of Materials[J]. Chinese Journal of Lasers, 2003, 30(11): 1053.